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Adenostoma fasciculatum

Chamise

Family RosaceaeGenus Adenostoma

A wiry branch set with short needle-like leaves, carrying loose sprays of tiny cream flowers along its length.
FlowerUnknownPublic domain

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
10.0 ft3 mPLANTS Database
Flower
WhitePLANTS Database
Blooms
Mid SpringPLANTS Database
Native range
California, Mexico NorthwestGBIF Backbone Taxonomy

Growing conditions

Sun
Shade tolerance: HighPLANTS Database
Soil
Adapted to coarse, medium, fine textured soilsPLANTS Database
Soil pH
4.0-6.0PLANTS 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 4 treatments. All are shown.

Protocol 1

DerivedN. C. Deno, 1996

Difficulty High Rated by us, not by the source.

Start around December 28, 2026 for a May 3 last frost.

  1. Gibberellic acid soak

  2. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 98 days to germinate.

27% germination in 21–98 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Adenostoma p. 16Public domain
Show the original text
Adenostoma (Rosaceae). Fresh seed of A. facsiculatum germ. best in 70 GA-3(27% in 3-14 w) and 70L(15% in 6-12 w)-40{9%)-70(8%) and less in 70D(2%)- 40(6%). Seeds DS 6 m germ. similarly, but seeds DS 1 y germ.' 12% in 2-5 w in either 70D or 70L indicating that the light requirement had died away. Seeds DS 2 y were all dead.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Adenostoma p. 16. 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 High Rated by us, not by the source.

Start around January 11, 2027 for a May 3 last frost.

  1. Warm moist stratification

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

  2. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

Steps after step 1 run on after germination.

Germination happens during step 1, in 84 days.

15% germination in 42–84 days.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Adenostoma p. 16Public domain
Show the original text
Adenostoma (Rosaceae). Fresh seed of A. facsiculatum germ. best in 70 GA-3(27% in 3-14 w) and 70L(15% in 6-12 w)-40{9%)-70(8%) and less in 70D(2%)- 40(6%). Seeds DS 6 m germ. similarly, but seeds DS 1 y germ.' 12% in 2-5 w in either 70D or 70L indicating that the light requirement had died away. Seeds DS 2 y were all dead.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Adenostoma p. 16. 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 March 15, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C

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

8% germination.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Adenostoma p. 16Public domain
Show the original text
Adenostoma (Rosaceae). Fresh seed of A. facsiculatum germ. best in 70 GA-3(27% in 3-14 w) and 70L(15% in 6-12 w)-40{9%)-70(8%) and less in 70D(2%)- 40(6%). Seeds DS 6 m germ. similarly, but seeds DS 1 y germ.' 12% in 2-5 w in either 70D or 70L indicating that the light requirement had died away. Seeds DS 2 y were all dead.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Adenostoma p. 16. 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 December 15, 2026 for a May 3 last frost.

  1. Warm moist stratification

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

    2 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; time not stated, 21 days assumed.

6% germination.

Seed Germination Theory and Practice, 1st Supplement — N. C. Deno, 1996 · 1st Supplement, Adenostoma p. 16Public domain
Show the original text
Adenostoma (Rosaceae). Fresh seed of A. facsiculatum germ. best in 70 GA-3(27% in 3-14 w) and 70L(15% in 6-12 w)-40{9%)-70(8%) and less in 70D(2%)- 40(6%). Seeds DS 6 m germ. similarly, but seeds DS 1 y germ.' 12% in 2-5 w in either 70D or 70L indicating that the light requirement had died away. Seeds DS 2 y were all dead.
Seed Germination Theory and Practice, 1st Supplement, 1st Supplement, Adenostoma p. 16. 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.

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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