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Sideranthus coloradoensis

Colorado tansy aster

Family AsteraceaeGenus Sideranthus

Also published as Xanthisma coloradoense. You are in the right place.

Pale pink daisies with deep yellow centres on short stems, above a rosette of narrow grey-green toothed leaves, among grey scree.
FlowerGhislain118 http://www.fleurs-des-montagnes.netCC BY-SA 3.0

About the plant

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

Native range
Colorado, WyomingGBIF Backbone Taxonomy

Toxicity is noted only where a source states it. No note here is not a finding of safety.

Source: GBIF Backbone Taxonomy — Global Biodiversity Information Facility.

Protocol

DerivedN. C. Deno, 1993

Difficulty Low Rated by us, not by the source.

  1. Dry storage

    Duration: 180 days

  2. Sow and cover

    Temperature: 70°F 21°C

about 6 months from start to sowing. Then 14 days to germinate.

100% germination in 14 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Aster p. 104Public domain
Show the original text
Aster (Asteraceae). Nearly all species in this genus are D-70 germinators. The following were received as DS seed and germ. in 2-4 w at 70: A. coloradoensis germ. 70(100% in 2nd w) using seed DS 6 m at 70 or 40 and none after 5 cycles with fresh seed showing that the species is a D-70 germinator.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Aster p. 104. 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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