Deno’s Garden

Pieris japonica

Genus Pieris

This source reports 6 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around March 30, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C Light: light

No stated waiting before sowing. Then 6 days to germinate.

97% germination in 6 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Pieris p. 194Public domain
Show the original text
Pieris (Ericaceae). P. japonica germ. 70L(97%, End. t 6 d, rate 201/o/d), 70D(10%in 3rd w), and 40(14% in 9th w)-70D(none) using fresh seed. Seeds DS 6 m at 70 germ. 70L(86% in 2nd w)70D(12% in 3rd w),40(35% in 7-12 w)-70L(29%), and 40(35%)-70D(5%). This is similar to fresh seed.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Pieris p. 194. 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, 1993

Difficulty Moderate Rated by us, not by the source.

Start around June 26, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 25, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Warm moist stratification

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

  3. Warm moist stratification

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

    12 germinated in this phase.

Steps after step 2 run on after germination.

about 9 months from start to sowing. Then 14 days to germinate.

86% germination in 14 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Pieris p. 194Public domain
Show the original text
Pieris (Ericaceae). P. japonica germ. 70L(97%, End. t 6 d, rate 201/o/d), 70D(10%in 3rd w), and 40(14% in 9th w)-70D(none) using fresh seed. Seeds DS 6 m at 70 germ. 70L(86% in 2nd w)70D(12% in 3rd w),40(35% in 7-12 w)-70L(29%), and 40(35%)-70D(5%). This is similar to fresh seed.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Pieris p. 194. 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, 1993

Difficulty Moderate Rated by us, not by the source.

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

  1. Dry storage

    Duration: 180 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: light

    29 germinated in this phase.

Steps after step 2 run on after germination.

about 9 months from start to sowing. Then 84 days to germinate.

35% germination in 49–84 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Pieris p. 194Public domain
Show the original text
Pieris (Ericaceae). P. japonica germ. 70L(97%, End. t 6 d, rate 201/o/d), 70D(10%in 3rd w), and 40(14% in 9th w)-70D(none) using fresh seed. Seeds DS 6 m at 70 germ. 70L(86% in 2nd w)70D(12% in 3rd w),40(35% in 7-12 w)-70L(29%), and 40(35%)-70D(5%). This is similar to fresh seed.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Pieris p. 194. 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, 1993

Difficulty Moderate Rated by us, not by the source.

Start around June 19, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on June 18, 2026.

  1. Dry storage

    Duration: 180 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

    5 germinated in this phase.

Steps after step 2 run on after germination.

about 9 months from start to sowing. Germination time not stated; 21 days assumed.

35% germination.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Pieris p. 194Public domain
Show the original text
Pieris (Ericaceae). P. japonica germ. 70L(97%, End. t 6 d, rate 201/o/d), 70D(10%in 3rd w), and 40(14% in 9th w)-70D(none) using fresh seed. Seeds DS 6 m at 70 germ. 70L(86% in 2nd w)70D(12% in 3rd w),40(35% in 7-12 w)-70L(29%), and 40(35%)-70D(5%). This is similar to fresh seed.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Pieris p. 194. 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, 1993

Difficulty High Rated by us, not by the source.

Start around November 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: dark

Steps after step 1 run on after germination.

about 3 months from start to sowing. Then 63 days to germinate.

14% germination in 63 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Pieris p. 194Public domain
Show the original text
Pieris (Ericaceae). P. japonica germ. 70L(97%, End. t 6 d, rate 201/o/d), 70D(10%in 3rd w), and 40(14% in 9th w)-70D(none) using fresh seed. Seeds DS 6 m at 70 germ. 70L(86% in 2nd w)70D(12% in 3rd w),40(35% in 7-12 w)-70L(29%), and 40(35%)-70D(5%). This is similar to fresh seed.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Pieris p. 194. 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, 1993

Difficulty 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. Then 21 days to germinate.

10% germination in 21 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Pieris p. 194Public domain
Show the original text
Pieris (Ericaceae). P. japonica germ. 70L(97%, End. t 6 d, rate 201/o/d), 70D(10%in 3rd w), and 40(14% in 9th w)-70D(none) using fresh seed. Seeds DS 6 m at 70 germ. 70L(86% in 2nd w)70D(12% in 3rd w),40(35% in 7-12 w)-70L(29%), and 40(35%)-70D(5%). This is similar to fresh seed.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Pieris p. 194. 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.