Deno’s Garden

Pseudocydonia sinensis

Genus Pseudocydonia

Two sources report 4 treatments between them. All are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty Low Rated by us, not by the source.

Start around January 25, 2027 for a May 3 last frost.

  1. Clean the flesh off the seed

  2. Cold moist stratification

    Temperature: 40°F 4°C

No stated waiting before sowing. Then 70 days to germinate.

100% germination in 70 days.

This source doesn't state how long.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Chaenomeles p. 23Public domain
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Chaenomeles (Rosaceae). C. sinensis germ. 40(100% in 10th w) and 70D( 10%)-40(70% in 9th w) for seeds WC either one d or 7 d.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Chaenomeles p. 23. 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, 1998

Difficulty Moderate Rated by us, not by the source.

Start around August 6, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on August 5, 2026.

  1. Clean the flesh off the seed

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C Light: dark

    10 germinated in this phase.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 6 months from start to sowing. Then 63 days to germinate.

70% germination in 63 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Chaenomeles p. 23Public domain
Show the original text
Chaenomeles (Rosaceae). C. sinensis germ. 40(100% in 10th w) and 70D( 10%)-40(70% in 9th w) for seeds WC either one d or 7 d.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Chaenomeles p. 23. 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 Moderate Rated by us, not by the source.

Start around March 15, 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

7 days from start to sowing. Then 14 days to germinate.

50% germination in 2–14 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Chaenomeles p. 30Public domain
Show the original text
Chaenomeles (Rosaceae). C. sinensis is the commercial quince. It germ. 70(4/8 in 2-14 d) for seeds WC 7 d and 70(1/10 in 4th w) for seeds simply rinsed.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Chaenomeles p. 30. 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 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

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

10% germination in 28 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Chaenomeles p. 30Public domain
Show the original text
Chaenomeles (Rosaceae). C. sinensis is the commercial quince. It germ. 70(4/8 in 2-14 d) for seeds WC 7 d and 70(1/10 in 4th w) for seeds simply rinsed.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Chaenomeles p. 30. 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.