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Eustoma grandiflorum

Eustoma grandiflorum
lisianthus; prairie gentian
Synonym(s) Eustoma russelianum
Common name lisianthus; prairie gentian
Family gentianaceae
Life cycle annual/tender perennial
Flowers white-blue (summer-fall)
Size 18"
Light sun-part shade
Cultural notes ordinary garden soil
From seed germinate at room temperature. start early (December/January) to get flowers by early summer.
detailed seed-starting info below

Beautiful flowers on strong stalks, bluish-green foliage. We start ours very early, so that we can enjoy them all summer long. Our original seed was 'Echo mix', which had many colors - by now, several generations later, we're down to white, light blue, and dark blue. I start these every year, very early on (in December). They don't take all that long to germinate (typically about two weeks), but then they take forever to reach a decent size. I often pot them larger in March or April, and they haven't reached two inches height yet by that time.

This plant used to grow in our garden, but it slipped away...

One or more images of this plant are included in my stock photo catalog

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Seed-starting details for this plant

  1. Coated seed from Park. 6pak 70F (16%G, starting 21d).
    Seed from '00 garden. 6pak 65F (20%G, starting 14d)
  2. Seed from '00 and '01 garden sowed to surface of pot at 65F. Lots of seedlings starting 10d
  3. Seed from '05 garden. Surface-sowed pot (Dec 8) at 65F. Germination started Dec 25. Fair germination percentage, slow growth - potted up Mar 18.
  4. Seed from '09 garden. Surface-sowed pot (Dec 26) at 70F. Germination started Jan 16. High germination, dense growth of seedlings in pot

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