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Holodiscus discolor

Oceanspray · Bush Oceanspray · Creambush

Family RosaceaeGenus Holodiscus

A drooping, feathery plume of tiny creamy-white flowers hanging from a branch beside a toothed leaf
FlowerWalter Siegmund (talk)CC BY-SA 3.0

About the plant

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

The plant

Habit
shrub or treePlants of the World Online
Habit
Perennial, ShrubPLANTS Database
Height
12.0 ft3.7 mPLANTS Database
Flower
WhitePLANTS Database
Blooms
Late SummerPLANTS Database
Native range
Arizona, British Columbia, California, Colorado, Idaho, Mexico Central and elsewhereGBIF Backbone Taxonomy

Growing conditions

Sun
Shade tolerance: HighPLANTS Database
Soil
Adapted to coarse, medium, fine textured soilsPLANTS Database
Soil pH
6.5-7.5PLANTS Database
Moisture
Moisture use: HighPLANTS Database
Watering
Drought tolerance: LowPLANTS 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, 1993

Difficulty Moderate Rated by us, not by the source.

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

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    10 germinated in this phase.

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 3 months from start to step 2. Germination happens during step 2, in 8 days.

33% germination in 4–8 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Holodiscus p. 153Public domain
Show the original text
Holodiscus (Rosaceae). H. discolor germ. 40(10% in 12th w)-70(33% in 4- 8d), 70-40 (none), and 1/17 in May in outdoor treatment.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Holodiscus p. 153. 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 Very high Rated by us, not by the source.

  1. Sow outdoors and leave it

    Up in May.

No stated waiting before sowing.

6% germination.

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

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Holodiscus p. 153Public domain
Show the original text
Holodiscus (Rosaceae). H. discolor germ. 40(10% in 12th w)-70(33% in 4- 8d), 70-40 (none), and 1/17 in May in outdoor treatment.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Holodiscus p. 153. 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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