Deno’s GardenMy Garden

Eutrochium purpureum

sweet Joe Pye weed · sweet-scented Joe Pye weed · purple Joe Pye weed

Family AsteraceaeGenus Eutrochium

Also published as Eupatorium purpureum. You are in the right place.

A broad domed head of dusty pink thread-like florets on a dark red stem, standing beside a green pond with waterlilies.
FlowerMichael KramerCC BY-SA 3.0

Worth knowing

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 germinated in this phase.

  2. Warm moist stratification

    Duration: 90 daysTemperature: 70°F 21°C

about 6 months from start to sowing. Then 4 days to germinate.

98% germination in 2–4 days.

Seed Germination Theory and Practice, 2nd ed. — N. C. Deno, 1993 · Ch. 20, Eupatorium p. 142Public domain
Show the original text
Eupatorium (Asteraceae). Seed counts were difficult so the percent germinations are calculated on the basis that total germination was 100%. The 40-70 germination pattern found in E. purpureum germ. 40(2%)-70(98% in 2-4 d) using fresh seed or seed DS 6 m at 70 or 40.
Seed Germination Theory and Practice, 2nd ed., Ch. 20, Eupatorium p. 142. 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.

Add to My Garden

View species page