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Arctostaphylos patula

Green-leaf Manzanita · Greenleaf Manzanita

Family EricaceaeGenus Arctostaphylos

Drooping clusters of pale pink urn-shaped flowers on red twigs, among round leathery leaves held upright.
FlowerWalter SiegmundCC BY 2.5

About the plant

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

The plant

Habit
shrubPlants of the World Online
Habit
Perennial, ShrubPLANTS Database
Height
6.0 ft1.8 mPLANTS Database
Flower
WhitePLANTS Database
Blooms
Late SpringPLANTS Database
Native range
Arizona, California, Colorado, Mexico Northwest, Montana, Nevada and elsewhereGBIF Backbone Taxonomy

Growing conditions

Sun
Shade tolerance: MediumPLANTS Database
Soil
Adapted to coarse, medium, fine textured soilsPLANTS Database
Soil pH
6.0-7.9PLANTS Database
Moisture
Moisture use: MediumPLANTS Database
Watering
Drought tolerance: HighPLANTS Database

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; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty 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. Gibberellic acid soak

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

    4 germinated in this phase.

  3. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    9 germinated in this phase.

  4. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 6 months from start to step 4. Germination happens during step 4; time not stated, 21 days assumed.

13% germination.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Arctostaphylos p. 21Public domain
Show the original text
Arctostaphylos (Ericaceae). Studies on A. patula germ. 70 GA-3(4%)-40(9%)-70(13%) and none in 70-40-70-40-70.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Arctostaphylos p. 21. 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

  1. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing.

0% germination.

Nothing germinated at 70.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Arctostaphylos p. 21Public domain
Show the original text
Arctostaphylos (Ericaceae). Studies on A. patula germ. 70 GA-3(4%)-40(9%)-70(13%) and none in 70-40-70-40-70.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Arctostaphylos p. 21. Quoted exactly. Every value on this card comes from this record; the step names come from a fixed list.

How each step is done, in Deno’s words, and what Verified and Derived mean.

Germination trials

Readers’ own records of sowing this species, published after review. Share your trial · All trials

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