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Nolina parryi

Parry Nolina · Parry's Beargrass · Parry's Nolina

Family AsparagaceaeGenus Nolina

A dense globe of long stiff gray-green leaves on a desert slope, skirted with dead straw-colored leaves hanging to the ground.
The whole plantStan ShebsCC BY-SA 3.0

About the plant

What it is and where it grows — not part of any germination protocol.

Habit
shrubPlants of the World Online
Habit
Perennial, Shrub, Subshrub, TreePLANTS Database
Flower
WhiteWikipedia
Native range
California, Mexico NorthwestGBIF Backbone Taxonomy

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Sources: Plants of the World Online — Royal Botanic Gardens, Kew; PLANTS Database — USDA NRCS; Wikipedia — Wikipedia contributors; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

Two sources report 8 treatments between them. All are shown.

Protocol 1

DerivedN. C. Deno, 1998

Difficulty High Rated by us, not by the source.

Start around October 15, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on October 14, 2022.

  1. Dry storage

    Duration: 1460 daysTemperature: 70°F 21°C

  2. Warm moist stratification

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

    1/15 germinated in this phase.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 4 years from start to step 3. Germination happens during step 3, in 84 days.

20% germination in 7–84 days.

Seed Germination Theory and Practice, 2nd Supplement — N. C. Deno, 1998 · 2nd Supplement, Nolina p. 50Public domain
Show the original text
Nolina (Agavaceae). N. parryi DS 4 y germ. 70D(1/15 in 10th w)-40(3/15 in 1-12 w). Earlier work (1st Suppl.) had shown that there was significant dying after 2 y DS and this DS 4 y sample shows further dying after the 4 y DS.
Seed Germination Theory and Practice, 2nd Supplement, 2nd Supplement, Nolina p. 50. 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 Low Rated by us, not by the source.

Start around February 8, 2027 for a May 3 last frost.

  1. Cold moist stratification

    Temperature: 40°F 4°C

Germination happens during step 1, in 56 days.

90% germination in 56 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Nolina p. 61Public domain
Show the original text
Nolina (Agavaceae). N. parryi germ. 70D(44% in 2-4 w)-40(56% in 3rd w), 70 GA-3(21%), 40(90% in 8th w), and 70% in April in OT. Seeds DS 6 m or 1 y gave similar patterns with 40(90% in 2-4 w) and 70D(5%)-40(80% in 3rd w). Seeds DS 2 y germ. 40(52% in 8-12 w)-70(24% in 3-7 d) showing that germination was less and slower after the 2 y DS.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Nolina p. 61. 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 Low Rated by us, not by the source.

Start around September 10, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on September 9, 2026.

  1. Dry storage

    Duration: 180 daysTemperature: 70°F 21°C

  2. Cold moist stratification

    Temperature: 40°F 4°C

about 6 months from start to step 2. Germination happens during step 2, in 28 days.

90% germination in 14–28 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Nolina p. 61Public domain
Show the original text
Nolina (Agavaceae). N. parryi germ. 70D(44% in 2-4 w)-40(56% in 3rd w), 70 GA-3(21%), 40(90% in 8th w), and 70% in April in OT. Seeds DS 6 m or 1 y gave similar patterns with 40(90% in 2-4 w) and 70D(5%)-40(80% in 3rd w). Seeds DS 2 y germ. 40(52% in 8-12 w)-70(24% in 3-7 d) showing that germination was less and slower after the 2 y DS.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Nolina p. 61. 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 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. Warm moist stratification

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

    5 germinated in this phase.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 9 months from start to step 3. Germination happens during step 3, in 21 days.

80% germination in 21 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Nolina p. 61Public domain
Show the original text
Nolina (Agavaceae). N. parryi germ. 70D(44% in 2-4 w)-40(56% in 3rd w), 70 GA-3(21%), 40(90% in 8th w), and 70% in April in OT. Seeds DS 6 m or 1 y gave similar patterns with 40(90% in 2-4 w) and 70D(5%)-40(80% in 3rd w). Seeds DS 2 y germ. 40(52% in 8-12 w)-70(24% in 3-7 d) showing that germination was less and slower after the 2 y DS.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Nolina p. 61. 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 Low Rated by us, not by the source.

  1. Sow outdoors and leave it

    Up in April.

No stated waiting before sowing.

70% germination.

This source doesn't state how long step 1 lasts.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Nolina p. 61Public domain
Show the original text
Nolina (Agavaceae). N. parryi germ. 70D(44% in 2-4 w)-40(56% in 3rd w), 70 GA-3(21%), 40(90% in 8th w), and 70% in April in OT. Seeds DS 6 m or 1 y gave similar patterns with 40(90% in 2-4 w) and 70D(5%)-40(80% in 3rd w). Seeds DS 2 y germ. 40(52% in 8-12 w)-70(24% in 3-7 d) showing that germination was less and slower after the 2 y DS.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Nolina p. 61. 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, 1996

Difficulty Moderate Rated by us, not by the source.

Start around December 15, 2026 for a May 3 last frost.

  1. Warm moist stratification

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

    44 germinated in this phase.

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

about 3 months from start to step 2. Germination happens during step 2, in 21 days.

56% germination in 21 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Nolina p. 61Public domain
Show the original text
Nolina (Agavaceae). N. parryi germ. 70D(44% in 2-4 w)-40(56% in 3rd w), 70 GA-3(21%), 40(90% in 8th w), and 70% in April in OT. Seeds DS 6 m or 1 y gave similar patterns with 40(90% in 2-4 w) and 70D(5%)-40(80% in 3rd w). Seeds DS 2 y germ. 40(52% in 8-12 w)-70(24% in 3-7 d) showing that germination was less and slower after the 2 y DS.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Nolina p. 61. 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 7

DerivedN. C. Deno, 1996

Difficulty Moderate Rated by us, not by the source.

Start around January 12, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on January 11, 2025.

  1. Dry storage

    Duration: 730 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

    24 germinated in this phase.

Steps after step 2 run on after germination.

about 2 years from start to step 2. Germination happens during step 2, in 84 days.

52% germination in 56–84 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Nolina p. 61Public domain
Show the original text
Nolina (Agavaceae). N. parryi germ. 70D(44% in 2-4 w)-40(56% in 3rd w), 70 GA-3(21%), 40(90% in 8th w), and 70% in April in OT. Seeds DS 6 m or 1 y gave similar patterns with 40(90% in 2-4 w) and 70D(5%)-40(80% in 3rd w). Seeds DS 2 y germ. 40(52% in 8-12 w)-70(24% in 3-7 d) showing that germination was less and slower after the 2 y DS.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Nolina p. 61. 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 8

DerivedN. C. Deno, 1996

Difficulty High 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.

21% germination.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Nolina p. 61Public domain
Show the original text
Nolina (Agavaceae). N. parryi germ. 70D(44% in 2-4 w)-40(56% in 3rd w), 70 GA-3(21%), 40(90% in 8th w), and 70% in April in OT. Seeds DS 6 m or 1 y gave similar patterns with 40(90% in 2-4 w) and 70D(5%)-40(80% in 3rd w). Seeds DS 2 y germ. 40(52% in 8-12 w)-70(24% in 3-7 d) showing that germination was less and slower after the 2 y DS.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Nolina p. 61. 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.

Germination trials

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