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Trillium albidum

Freeman's Trillium · Giant White Wakerobin · Sweet Trillium

Family MelanthiaceaeGenus Trillium

A colony of upright white flowers, their narrow petals held erect, above broad leaves mottled light and dark green.
The whole plantEric in SFCC BY-SA 3.0

About the plant

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

Habit
rhizomatous geophytePlants of the World Online
Habit
Perennial, Forb/herbPLANTS Database
Flower
White, creamy whiteFlora of North America
Native range
California, Oregon, WashingtonGBIF 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; Flora of North America — Flora of North America Editorial Committee; GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Worth knowing

  • The only trillium with a stalkless white flower. In the San Francisco Bay Area it is often confused with a white form of Trillium chloropetalum. Wikipedia: Trillium albidum

Protocol

DerivedN. C. Deno, 1993

Difficulty Moderate Rated by us, not by the source.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

  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 3 days.

100% germination in 3 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Trillium p. 223Public domain
Show the original text
Trillium (Llliaceae). Gibberelins are at least desirable if not requisite for both germination and the production of healthy seedlings. More work is necessary before an optimum procedure can be recommended. The GA-3 treatment was tried with fresh seeds of T. albidum germ. 40-70(100% largely on the 3rd d). The seedlings require about a month at 70 to complete development of the radicle and tuber after which they are shifted to 40. After 1-2 m at 40 the cotyledon begins to draw out of the seed coat. It is best to keep the seedlings an additional month or two at 40 before shifting to 70. On shifting to 70 development of the cotyledon is completed in a week or so. All other procedures either fail to give any germination or the seedlings are weak and never fully develop the cotyledon.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Trillium p. 223. 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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