Deno’s Garden

Purshia mexicana

Genus Purshia

This source reports three treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty Low 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: light

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

88% germination in 14–28 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Purshia p. 69Public domain
Show the original text
Purshia (Rosaceae). P. mexicana v. stansburyana germ. 70L(88% in 2-4 w), 70 GA-3(30%), 70D{46% in 3-8 w), and 40(61% in 7-12 W)-70(15%). Winter temperatures killed all the seed in OT. DS for 6 m had littie effect.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Purshia p. 69. 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 December 15, 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

    15 germinated in this phase.

Steps after step 1 run on after germination.

about 3 months from start to sowing. Germination time not stated; 21 days assumed.

61% germination.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Purshia p. 69Public domain
Show the original text
Purshia (Rosaceae). P. mexicana v. stansburyana germ. 70L(88% in 2-4 w), 70 GA-3(30%), 70D{46% in 3-8 w), and 40(61% in 7-12 W)-70(15%). Winter temperatures killed all the seed in OT. DS for 6 m had littie effect.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Purshia p. 69. 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. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C

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

30% germination.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Purshia p. 69Public domain
Show the original text
Purshia (Rosaceae). P. mexicana v. stansburyana germ. 70L(88% in 2-4 w), 70 GA-3(30%), 70D{46% in 3-8 w), and 40(61% in 7-12 W)-70(15%). Winter temperatures killed all the seed in OT. DS for 6 m had littie effect.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Purshia p. 69. 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.