Deno’s Garden

Hypericum prolificum

Genus Hypericum

This source reports 4 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

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

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: light

about 6 months from start to sowing. Then 42 days to germinate.

63% germination in 7–42 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Hypericum p. 49Public domain
Show the original text
Hypericum (Hyperiaceae). H. spathulatum seeds germ. 70L(44% in 1-7 w) and 70D(2%) for fresh seeds. Seeds DS 6 m germ. 70L(63% in 1-6 w) and 70D(7%).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Hypericum p. 49. 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 February 15, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 49 days to germinate.

44% germination in 7–49 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Hypericum p. 49Public domain
Show the original text
Hypericum (Hyperiaceae). H. spathulatum seeds germ. 70L(44% in 1-7 w) and 70D(2%) for fresh seeds. Seeds DS 6 m germ. 70L(63% in 1-6 w) and 70D(7%).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Hypericum p. 49. 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 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. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Sow and cover

    Temperature: 70°F 21°C Light: dark

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

7% germination.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Hypericum p. 49Public domain
Show the original text
Hypericum (Hyperiaceae). H. spathulatum seeds germ. 70L(44% in 1-7 w) and 70D(2%) for fresh seeds. Seeds DS 6 m germ. 70L(63% in 1-6 w) and 70D(7%).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Hypericum p. 49. 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 March 15, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: dark

No stated waiting before sowing. Germination time not stated; 21 days assumed.

2% germination.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Hypericum p. 49Public domain
Show the original text
Hypericum (Hyperiaceae). H. spathulatum seeds germ. 70L(44% in 1-7 w) and 70D(2%) for fresh seeds. Seeds DS 6 m germ. 70L(63% in 1-6 w) and 70D(7%).
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Hypericum p. 49. 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.