Deno’s Garden

Cucurbita maxima

Genus Cucurbita

Two sources report 19 treatments between them. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Low Rated by us, not by the source.

Start around January 29, 2027 for a May 3 last frost.

  1. Dry storage

    Duration: 60 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 2 months from start to sowing. Then 6 days to germinate.

80% germination in 4–6 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Cucurbita p. 35Public domain
Show the original text
Cucurbita (Cucurbitaceae). C. maxima (Acorn squash) showed dramatic effects of DS with the effect of light disappearing on DS. Fresh seeds germ. 70L(100% in 10-27 d), 70D(26% in 2-4 w) and 70 GA-3(62% in 9-19 d). Seeds DS 2 m at 70 germ. 70D(80% in 4-6 d) and 70GA- 3(50% in 7-9 d). Seeds DS 12 or 18 m germ. 70D(100% on 3rd d). After 3 y of DS there is significant dying and such seeds germ. 70D(30% in 2-8 d). Note not only the lower percentage but the slower rate of germination. Possibly the seedlings were weaker but this was not studied. The effect of GA-3 is confusing, but suffice to say it is of no benefit to germination.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Cucurbita p. 35. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 2

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around March 29, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 28, 2024.

  1. Dry storage

    Duration: 1095 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 3 years from start to sowing. Then 8 days to germinate.

30% germination in 2–8 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Cucurbita p. 35Public domain
Show the original text
Cucurbita (Cucurbitaceae). C. maxima (Acorn squash) showed dramatic effects of DS with the effect of light disappearing on DS. Fresh seeds germ. 70L(100% in 10-27 d), 70D(26% in 2-4 w) and 70 GA-3(62% in 9-19 d). Seeds DS 2 m at 70 germ. 70D(80% in 4-6 d) and 70GA- 3(50% in 7-9 d). Seeds DS 12 or 18 m germ. 70D(100% on 3rd d). After 3 y of DS there is significant dying and such seeds germ. 70D(30% in 2-8 d). Note not only the lower percentage but the slower rate of germination. Possibly the seedlings were weaker but this was not studied. The effect of GA-3 is confusing, but suffice to say it is of no benefit to germination.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Cucurbita p. 35. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 3

DerivedN. C. Deno, 1996

Difficulty High Rated by us, not by the source.

Start around March 8, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Then 28 days to germinate.

26% germination in 14–28 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Cucurbita p. 35Public domain
Show the original text
Cucurbita (Cucurbitaceae). C. maxima (Acorn squash) showed dramatic effects of DS with the effect of light disappearing on DS. Fresh seeds germ. 70L(100% in 10-27 d), 70D(26% in 2-4 w) and 70 GA-3(62% in 9-19 d). Seeds DS 2 m at 70 germ. 70D(80% in 4-6 d) and 70GA- 3(50% in 7-9 d). Seeds DS 12 or 18 m germ. 70D(100% on 3rd d). After 3 y of DS there is significant dying and such seeds germ. 70D(30% in 2-8 d). Note not only the lower percentage but the slower rate of germination. Possibly the seedlings were weaker but this was not studied. The effect of GA-3 is confusing, but suffice to say it is of no benefit to germination.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Cucurbita p. 35. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 4

DerivedN. C. Deno, 1996

Difficulty Low Rated by us, not by the source.

Start around March 9, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 27 days to germinate.

100% germination in 10–27 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Cucurbita p. 35Public domain
Show the original text
Cucurbita (Cucurbitaceae). C. maxima (Acorn squash) showed dramatic effects of DS with the effect of light disappearing on DS. Fresh seeds germ. 70L(100% in 10-27 d), 70D(26% in 2-4 w) and 70 GA-3(62% in 9-19 d). Seeds DS 2 m at 70 germ. 70D(80% in 4-6 d) and 70GA- 3(50% in 7-9 d). Seeds DS 12 or 18 m germ. 70D(100% on 3rd d). After 3 y of DS there is significant dying and such seeds germ. 70D(30% in 2-8 d). Note not only the lower percentage but the slower rate of germination. Possibly the seedlings were weaker but this was not studied. The effect of GA-3 is confusing, but suffice to say it is of no benefit to germination.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Cucurbita p. 35. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 5

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around January 26, 2027 for a May 3 last frost.

  1. Dry storage

    Duration: 60 daysTemperature: 70°F 21°C

  2. Gibberellic acid soak

  3. Sow and cover

    Temperature: 70°F 21°C

about 2 months from start to sowing. Then 9 days to germinate.

50% germination in 7–9 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Cucurbita p. 35Public domain
Show the original text
Cucurbita (Cucurbitaceae). C. maxima (Acorn squash) showed dramatic effects of DS with the effect of light disappearing on DS. Fresh seeds germ. 70L(100% in 10-27 d), 70D(26% in 2-4 w) and 70 GA-3(62% in 9-19 d). Seeds DS 2 m at 70 germ. 70D(80% in 4-6 d) and 70GA- 3(50% in 7-9 d). Seeds DS 12 or 18 m germ. 70D(100% on 3rd d). After 3 y of DS there is significant dying and such seeds germ. 70D(30% in 2-8 d). Note not only the lower percentage but the slower rate of germination. Possibly the seedlings were weaker but this was not studied. The effect of GA-3 is confusing, but suffice to say it is of no benefit to germination.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Cucurbita p. 35. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 6

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around March 17, 2027 for a May 3 last frost.

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 19 days to germinate.

62% germination in 9–19 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Cucurbita p. 35Public domain
Show the original text
Cucurbita (Cucurbitaceae). C. maxima (Acorn squash) showed dramatic effects of DS with the effect of light disappearing on DS. Fresh seeds germ. 70L(100% in 10-27 d), 70D(26% in 2-4 w) and 70 GA-3(62% in 9-19 d). Seeds DS 2 m at 70 germ. 70D(80% in 4-6 d) and 70GA- 3(50% in 7-9 d). Seeds DS 12 or 18 m germ. 70D(100% on 3rd d). After 3 y of DS there is significant dying and such seeds germ. 70D(30% in 2-8 d). Note not only the lower percentage but the slower rate of germination. Possibly the seedlings were weaker but this was not studied. The effect of GA-3 is confusing, but suffice to say it is of no benefit to germination.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Cucurbita p. 35. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 7

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around January 24, 2027 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Dry storage

    Duration: 60 daysTemperature: 70°F 21°C

  4. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 2 months from start to sowing. Then 4 days to germinate.

95% germination in 4 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cucurbita p. 128Public domain
Show the original text
Cucurbita (Cucurbitaceae). The seeds are connected to the interior of the fruits through afilament. It is suspected that the inhibitors are transmitted through this filament. This would explain why short periods of WO of only ten minutes are effective in conditioning the seeds for germination. C. maxima (Butterbush squash) that had been DS for months germ. 70D(95% on 4th d), 40 (GA-3)-70(64% in 4-6 d), and 40-70(10%) This effect of GA-3 in protecting viability at 40 is interesting. C. maxima (Acorn squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-27 d), 70D GA-3(62% in 9-19 d), and 70D(26% in 2-4 w). Seeds WC for 7 d germ. 70D GA-3(33%) and 70D(43%). The effect of light disappears on DS and seeds DS 2 m at 70 germ. 70D(80% in 4-6 d). C. maxima (Spaghetti squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-21 d), 70D GA-3(100% in 4-6 d), and 70D(none). Seeds DS for 2 m at 70 germ. 70L(90% on 2nd d) and 70D(10%). Perhaps further DS would have eliminated the light requirement.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cucurbita p. 128. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 8

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around March 1, 2027 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Sow and cover

    Temperature: 70°F 21°C Light: dark

7 days from start to sowing. Then 28 days to germinate.

26% germination in 14–28 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cucurbita p. 128Public domain
Show the original text
Cucurbita (Cucurbitaceae). The seeds are connected to the interior of the fruits through afilament. It is suspected that the inhibitors are transmitted through this filament. This would explain why short periods of WO of only ten minutes are effective in conditioning the seeds for germination. C. maxima (Butterbush squash) that had been DS for months germ. 70D(95% on 4th d), 40 (GA-3)-70(64% in 4-6 d), and 40-70(10%) This effect of GA-3 in protecting viability at 40 is interesting. C. maxima (Acorn squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-27 d), 70D GA-3(62% in 9-19 d), and 70D(26% in 2-4 w). Seeds WC for 7 d germ. 70D GA-3(33%) and 70D(43%). The effect of light disappears on DS and seeds DS 2 m at 70 germ. 70D(80% in 4-6 d). C. maxima (Spaghetti squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-21 d), 70D GA-3(100% in 4-6 d), and 70D(none). Seeds DS for 2 m at 70 germ. 70L(90% on 2nd d) and 70D(10%). Perhaps further DS would have eliminated the light requirement.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cucurbita p. 128. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 9

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around March 8, 2027 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Sow and cover

    Temperature: 70°F 21°C Light: dark

7 days from start to sowing. Germination time not stated; 21 days assumed.

43% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cucurbita p. 128Public domain
Show the original text
Cucurbita (Cucurbitaceae). The seeds are connected to the interior of the fruits through afilament. It is suspected that the inhibitors are transmitted through this filament. This would explain why short periods of WO of only ten minutes are effective in conditioning the seeds for germination. C. maxima (Butterbush squash) that had been DS for months germ. 70D(95% on 4th d), 40 (GA-3)-70(64% in 4-6 d), and 40-70(10%) This effect of GA-3 in protecting viability at 40 is interesting. C. maxima (Acorn squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-27 d), 70D GA-3(62% in 9-19 d), and 70D(26% in 2-4 w). Seeds WC for 7 d germ. 70D GA-3(33%) and 70D(43%). The effect of light disappears on DS and seeds DS 2 m at 70 germ. 70D(80% in 4-6 d). C. maxima (Spaghetti squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-21 d), 70D GA-3(100% in 4-6 d), and 70D(none). Seeds DS for 2 m at 70 germ. 70L(90% on 2nd d) and 70D(10%). Perhaps further DS would have eliminated the light requirement.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cucurbita p. 128. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 10

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around January 22, 2027 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Dry storage

    Duration: 60 daysTemperature: 70°F 21°C

  4. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 2 months from start to sowing. Then 6 days to germinate.

80% germination in 4–6 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cucurbita p. 128Public domain
Show the original text
Cucurbita (Cucurbitaceae). The seeds are connected to the interior of the fruits through afilament. It is suspected that the inhibitors are transmitted through this filament. This would explain why short periods of WO of only ten minutes are effective in conditioning the seeds for germination. C. maxima (Butterbush squash) that had been DS for months germ. 70D(95% on 4th d), 40 (GA-3)-70(64% in 4-6 d), and 40-70(10%) This effect of GA-3 in protecting viability at 40 is interesting. C. maxima (Acorn squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-27 d), 70D GA-3(62% in 9-19 d), and 70D(26% in 2-4 w). Seeds WC for 7 d germ. 70D GA-3(33%) and 70D(43%). The effect of light disappears on DS and seeds DS 2 m at 70 germ. 70D(80% in 4-6 d). C. maxima (Spaghetti squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-21 d), 70D GA-3(100% in 4-6 d), and 70D(none). Seeds DS for 2 m at 70 germ. 70L(90% on 2nd d) and 70D(10%). Perhaps further DS would have eliminated the light requirement.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cucurbita p. 128. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 11

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around January 7, 2027 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Dry storage

    Duration: 60 daysTemperature: 70°F 21°C

  4. Sow and cover

    Temperature: 70°F 21°C Light: dark

about 2 months from start to sowing. Germination time not stated; 21 days assumed.

10% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cucurbita p. 128Public domain
Show the original text
Cucurbita (Cucurbitaceae). The seeds are connected to the interior of the fruits through afilament. It is suspected that the inhibitors are transmitted through this filament. This would explain why short periods of WO of only ten minutes are effective in conditioning the seeds for germination. C. maxima (Butterbush squash) that had been DS for months germ. 70D(95% on 4th d), 40 (GA-3)-70(64% in 4-6 d), and 40-70(10%) This effect of GA-3 in protecting viability at 40 is interesting. C. maxima (Acorn squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-27 d), 70D GA-3(62% in 9-19 d), and 70D(26% in 2-4 w). Seeds WC for 7 d germ. 70D GA-3(33%) and 70D(43%). The effect of light disappears on DS and seeds DS 2 m at 70 germ. 70D(80% in 4-6 d). C. maxima (Spaghetti squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-21 d), 70D GA-3(100% in 4-6 d), and 70D(none). Seeds DS for 2 m at 70 germ. 70L(90% on 2nd d) and 70D(10%). Perhaps further DS would have eliminated the light requirement.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cucurbita p. 128. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 12

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around March 2, 2027 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Sow and cover

    Temperature: 70°F 21°C Light: light

7 days from start to sowing. Then 27 days to germinate.

100% germination in 10–27 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cucurbita p. 128Public domain
Show the original text
Cucurbita (Cucurbitaceae). The seeds are connected to the interior of the fruits through afilament. It is suspected that the inhibitors are transmitted through this filament. This would explain why short periods of WO of only ten minutes are effective in conditioning the seeds for germination. C. maxima (Butterbush squash) that had been DS for months germ. 70D(95% on 4th d), 40 (GA-3)-70(64% in 4-6 d), and 40-70(10%) This effect of GA-3 in protecting viability at 40 is interesting. C. maxima (Acorn squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-27 d), 70D GA-3(62% in 9-19 d), and 70D(26% in 2-4 w). Seeds WC for 7 d germ. 70D GA-3(33%) and 70D(43%). The effect of light disappears on DS and seeds DS 2 m at 70 germ. 70D(80% in 4-6 d). C. maxima (Spaghetti squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-21 d), 70D GA-3(100% in 4-6 d), and 70D(none). Seeds DS for 2 m at 70 germ. 70L(90% on 2nd d) and 70D(10%). Perhaps further DS would have eliminated the light requirement.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cucurbita p. 128. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 13

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around March 8, 2027 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Sow and cover

    Temperature: 70°F 21°C Light: light

7 days from start to sowing. Then 21 days to germinate.

100% germination in 10–21 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cucurbita p. 128Public domain
Show the original text
Cucurbita (Cucurbitaceae). The seeds are connected to the interior of the fruits through afilament. It is suspected that the inhibitors are transmitted through this filament. This would explain why short periods of WO of only ten minutes are effective in conditioning the seeds for germination. C. maxima (Butterbush squash) that had been DS for months germ. 70D(95% on 4th d), 40 (GA-3)-70(64% in 4-6 d), and 40-70(10%) This effect of GA-3 in protecting viability at 40 is interesting. C. maxima (Acorn squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-27 d), 70D GA-3(62% in 9-19 d), and 70D(26% in 2-4 w). Seeds WC for 7 d germ. 70D GA-3(33%) and 70D(43%). The effect of light disappears on DS and seeds DS 2 m at 70 germ. 70D(80% in 4-6 d). C. maxima (Spaghetti squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-21 d), 70D GA-3(100% in 4-6 d), and 70D(none). Seeds DS for 2 m at 70 germ. 70L(90% on 2nd d) and 70D(10%). Perhaps further DS would have eliminated the light requirement.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cucurbita p. 128. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 14

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around January 26, 2027 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Dry storage

    Duration: 60 daysTemperature: 70°F 21°C

  4. Sow and cover

    Temperature: 70°F 21°C Light: light

about 2 months from start to sowing. Then 2 days to germinate.

90% germination in 2 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cucurbita p. 128Public domain
Show the original text
Cucurbita (Cucurbitaceae). The seeds are connected to the interior of the fruits through afilament. It is suspected that the inhibitors are transmitted through this filament. This would explain why short periods of WO of only ten minutes are effective in conditioning the seeds for germination. C. maxima (Butterbush squash) that had been DS for months germ. 70D(95% on 4th d), 40 (GA-3)-70(64% in 4-6 d), and 40-70(10%) This effect of GA-3 in protecting viability at 40 is interesting. C. maxima (Acorn squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-27 d), 70D GA-3(62% in 9-19 d), and 70D(26% in 2-4 w). Seeds WC for 7 d germ. 70D GA-3(33%) and 70D(43%). The effect of light disappears on DS and seeds DS 2 m at 70 germ. 70D(80% in 4-6 d). C. maxima (Spaghetti squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-21 d), 70D GA-3(100% in 4-6 d), and 70D(none). Seeds DS for 2 m at 70 germ. 70L(90% on 2nd d) and 70D(10%). Perhaps further DS would have eliminated the light requirement.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cucurbita p. 128. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 15

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around July 27, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 26, 2026.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Dry storage

    Duration: 60 daysTemperature: 70°F 21°C

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  5. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 8 months from start to sowing. Then 6 days to germinate.

64% germination in 4–6 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cucurbita p. 128Public domain
Show the original text
Cucurbita (Cucurbitaceae). The seeds are connected to the interior of the fruits through afilament. It is suspected that the inhibitors are transmitted through this filament. This would explain why short periods of WO of only ten minutes are effective in conditioning the seeds for germination. C. maxima (Butterbush squash) that had been DS for months germ. 70D(95% on 4th d), 40 (GA-3)-70(64% in 4-6 d), and 40-70(10%) This effect of GA-3 in protecting viability at 40 is interesting. C. maxima (Acorn squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-27 d), 70D GA-3(62% in 9-19 d), and 70D(26% in 2-4 w). Seeds WC for 7 d germ. 70D GA-3(33%) and 70D(43%). The effect of light disappears on DS and seeds DS 2 m at 70 germ. 70D(80% in 4-6 d). C. maxima (Spaghetti squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-21 d), 70D GA-3(100% in 4-6 d), and 70D(none). Seeds DS for 2 m at 70 germ. 70L(90% on 2nd d) and 70D(10%). Perhaps further DS would have eliminated the light requirement.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cucurbita p. 128. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 16

DerivedN. C. Deno, 1993

Difficulty High Rated by us, not by the source.

Start around July 12, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on July 11, 2026.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Dry storage

    Duration: 60 daysTemperature: 70°F 21°C

  4. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  5. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 8 months from start to sowing. Germination time not stated; 21 days assumed.

10% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cucurbita p. 128Public domain
Show the original text
Cucurbita (Cucurbitaceae). The seeds are connected to the interior of the fruits through afilament. It is suspected that the inhibitors are transmitted through this filament. This would explain why short periods of WO of only ten minutes are effective in conditioning the seeds for germination. C. maxima (Butterbush squash) that had been DS for months germ. 70D(95% on 4th d), 40 (GA-3)-70(64% in 4-6 d), and 40-70(10%) This effect of GA-3 in protecting viability at 40 is interesting. C. maxima (Acorn squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-27 d), 70D GA-3(62% in 9-19 d), and 70D(26% in 2-4 w). Seeds WC for 7 d germ. 70D GA-3(33%) and 70D(43%). The effect of light disappears on DS and seeds DS 2 m at 70 germ. 70D(80% in 4-6 d). C. maxima (Spaghetti squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-21 d), 70D GA-3(100% in 4-6 d), and 70D(none). Seeds DS for 2 m at 70 germ. 70L(90% on 2nd d) and 70D(10%). Perhaps further DS would have eliminated the light requirement.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cucurbita p. 128. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 17

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around March 10, 2027 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Gibberellic acid soak

  4. Sow and cover

    Temperature: 70°F 21°C Light: dark

7 days from start to sowing. Then 19 days to germinate.

62% germination in 9–19 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cucurbita p. 128Public domain
Show the original text
Cucurbita (Cucurbitaceae). The seeds are connected to the interior of the fruits through afilament. It is suspected that the inhibitors are transmitted through this filament. This would explain why short periods of WO of only ten minutes are effective in conditioning the seeds for germination. C. maxima (Butterbush squash) that had been DS for months germ. 70D(95% on 4th d), 40 (GA-3)-70(64% in 4-6 d), and 40-70(10%) This effect of GA-3 in protecting viability at 40 is interesting. C. maxima (Acorn squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-27 d), 70D GA-3(62% in 9-19 d), and 70D(26% in 2-4 w). Seeds WC for 7 d germ. 70D GA-3(33%) and 70D(43%). The effect of light disappears on DS and seeds DS 2 m at 70 germ. 70D(80% in 4-6 d). C. maxima (Spaghetti squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-21 d), 70D GA-3(100% in 4-6 d), and 70D(none). Seeds DS for 2 m at 70 germ. 70L(90% on 2nd d) and 70D(10%). Perhaps further DS would have eliminated the light requirement.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cucurbita p. 128. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 18

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

Start around March 8, 2027 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Gibberellic acid soak

  4. Sow and cover

    Temperature: 70°F 21°C Light: dark

7 days from start to sowing. Germination time not stated; 21 days assumed.

33% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cucurbita p. 128Public domain
Show the original text
Cucurbita (Cucurbitaceae). The seeds are connected to the interior of the fruits through afilament. It is suspected that the inhibitors are transmitted through this filament. This would explain why short periods of WO of only ten minutes are effective in conditioning the seeds for germination. C. maxima (Butterbush squash) that had been DS for months germ. 70D(95% on 4th d), 40 (GA-3)-70(64% in 4-6 d), and 40-70(10%) This effect of GA-3 in protecting viability at 40 is interesting. C. maxima (Acorn squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-27 d), 70D GA-3(62% in 9-19 d), and 70D(26% in 2-4 w). Seeds WC for 7 d germ. 70D GA-3(33%) and 70D(43%). The effect of light disappears on DS and seeds DS 2 m at 70 germ. 70D(80% in 4-6 d). C. maxima (Spaghetti squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-21 d), 70D GA-3(100% in 4-6 d), and 70D(none). Seeds DS for 2 m at 70 germ. 70L(90% on 2nd d) and 70D(10%). Perhaps further DS would have eliminated the light requirement.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cucurbita p. 128. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.

Protocol 19

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around March 23, 2027 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Leach in running water

    Duration: 7 days

    Washed and cleaned daily for 7 days.

  3. Gibberellic acid soak

  4. Sow and cover

    Temperature: 70°F 21°C Light: dark

7 days from start to sowing. Then 6 days to germinate.

100% germination in 4–6 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Cucurbita p. 128Public domain
Show the original text
Cucurbita (Cucurbitaceae). The seeds are connected to the interior of the fruits through afilament. It is suspected that the inhibitors are transmitted through this filament. This would explain why short periods of WO of only ten minutes are effective in conditioning the seeds for germination. C. maxima (Butterbush squash) that had been DS for months germ. 70D(95% on 4th d), 40 (GA-3)-70(64% in 4-6 d), and 40-70(10%) This effect of GA-3 in protecting viability at 40 is interesting. C. maxima (Acorn squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-27 d), 70D GA-3(62% in 9-19 d), and 70D(26% in 2-4 w). Seeds WC for 7 d germ. 70D GA-3(33%) and 70D(43%). The effect of light disappears on DS and seeds DS 2 m at 70 germ. 70D(80% in 4-6 d). C. maxima (Spaghetti squash) removed from the fruit and WC 10 minutes germ. 70L(100% in 10-21 d), 70D GA-3(100% in 4-6 d), and 70D(none). Seeds DS for 2 m at 70 germ. 70L(90% on 2nd d) and 70D(10%). Perhaps further DS would have eliminated the light requirement.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Cucurbita p. 128. Quoted exactly. Every value on this card comes from this record, except the difficulty rating, which is ours; the step names come from a fixed list.