Deno’s Garden

Vitex agnus-castus

Genus Vitex

Two sources report 5 treatments between them. All are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty High Rated by us, not by the source.

Start around September 24, 2026 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 24, 2023.

  1. Dry storage

    Duration: 1095 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  3. Warm moist stratification

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

about 3.5 years from start to sowing. Then 14 days to germinate.

15% germination in 14 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Vitex p. 67Public domain
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Vitex (Verbenaceae). V. agnus-castus DS 3 y germ. 70D-40-70D-40-70D(1) and 40-70D740-70D(5/33 in 2nd w). <. •
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Vitex p. 67. 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 9, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on March 8, 2026.

  1. Dry storage

    Duration: 365 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: light

about 12 months from start to sowing. Then 28 days to germinate.

40% germination in 7–28 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Vitex p. 86Public domain
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Vitex (Verbenaceae). V. agnus-castus germ. 7ÓL(40% in 2-10 w), 70 GA-3(46% in 2-5 w), 70D(none), 40-70L(38% on 4th d), and 40-70D(6%). When the sample in 70D was shifted to 70L after 3 m, 83% germ. in 6-17 d. Light (or GA-3) is a requisite for germination despite the hard black seed coat. After 1 y DS seeds germ. 70L(40% in 1-4 w) and 70D(none) indicating no significant deaths as yet.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Vitex p. 86. 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 October 3, 2026 for a May 3 last frost.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

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

about 6 months from start to sowing. Then 4 days to germinate.

38% germination in 4 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Vitex p. 86Public domain
Show the original text
Vitex (Verbenaceae). V. agnus-castus germ. 7ÓL(40% in 2-10 w), 70 GA-3(46% in 2-5 w), 70D(none), 40-70L(38% on 4th d), and 40-70D(6%). When the sample in 70D was shifted to 70L after 3 m, 83% germ. in 6-17 d. Light (or GA-3) is a requisite for germination despite the hard black seed coat. After 1 y DS seeds germ. 70L(40% in 1-4 w) and 70D(none) indicating no significant deaths as yet.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Vitex p. 86. 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 Very high Rated by us, not by the source.

Start around September 17, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 16, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  2. Warm moist stratification

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

about 6 months from start to sowing. Germination time not stated; 21 days assumed.

6% germination.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Vitex p. 86Public domain
Show the original text
Vitex (Verbenaceae). V. agnus-castus germ. 7ÓL(40% in 2-10 w), 70 GA-3(46% in 2-5 w), 70D(none), 40-70L(38% on 4th d), and 40-70D(6%). When the sample in 70D was shifted to 70L after 3 m, 83% germ. in 6-17 d. Light (or GA-3) is a requisite for germination despite the hard black seed coat. After 1 y DS seeds germ. 70L(40% in 1-4 w) and 70D(none) indicating no significant deaths as yet.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Vitex p. 86. 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 March 1, 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 35 days to germinate.

46% germination in 14–35 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Vitex p. 86Public domain
Show the original text
Vitex (Verbenaceae). V. agnus-castus germ. 7ÓL(40% in 2-10 w), 70 GA-3(46% in 2-5 w), 70D(none), 40-70L(38% on 4th d), and 40-70D(6%). When the sample in 70D was shifted to 70L after 3 m, 83% germ. in 6-17 d. Light (or GA-3) is a requisite for germination despite the hard black seed coat. After 1 y DS seeds germ. 70L(40% in 1-4 w) and 70D(none) indicating no significant deaths as yet.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Vitex p. 86. 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.