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Townsendia formosa

Genus Townsendia

A white daisy with broad ribbed rays and a golden-brown centre, seen face on against blurred green.
FlowerPatrick Alexander from Las Cruces, NMCC0

This source reports two treatments. Both are shown.

Protocol 1

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

Start around March 31, 2027 for a May 3 last frost.

  1. Sow and cover

    Temperature: 70°F 21°C

No stated waiting before sowing. Then 5 days to germinate.

90% germination in 2–5 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Townsendia p. 221Public domain
Show the original text
Townsendia (Asteraceae). This genus is composed entirely of 0-70 germinators. The time required for DS may be short as in T. eximia and T. formosa germ. 70(90-100% in 2-5 d) and 40(20%)-70(78% in 2-3 d) using fresh seed or seed DS 6 m at 70 or 40. -
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Townsendia p. 221. 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 Moderate Rated by us, not by the source.

Start around October 5, 2027 for a May 3 last frost. Too late for spring 2027 — that needed starting on October 4, 2026.

  1. Cold moist stratification

    Duration: 90 daysTemperature: 40°F 4°C

    20 germinated in this phase.

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 6 months from start to sowing. Then 3 days to germinate.

78% germination in 2–3 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Townsendia p. 221Public domain
Show the original text
Townsendia (Asteraceae). This genus is composed entirely of 0-70 germinators. The time required for DS may be short as in T. eximia and T. formosa germ. 70(90-100% in 2-5 d) and 40(20%)-70(78% in 2-3 d) using fresh seed or seed DS 6 m at 70 or 40. -
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Townsendia p. 221. 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.

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