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Indigofera amblyantha

Indigofera amblyantha
pinkflower indigo
Common name pinkflower indigo
Family fabaceae
Life cycle perennial shrub (Z6-10)
Flowers pink-purple, late summer
Size 3'
Light full sun-part shade
Cultural notes ordinary garden soil
From seed germinate at room temperature
detailed seed-starting info below
Seed ripenslate November

In my zone, this is a die-back shrub - it returns from the roots, or the bottom of its woody stalks, late every spring. It then grows rapidly into a nice bush with dense compound foliage, covered in flowers in summer, and tiny bean pods in fall.
I've started both this and I. heterantha from seed, and have somewhat lost track of which is which. According to my encyclopedia, amblyantha has 7-11 leaflets, whereas heterantha has as many as 21. Its foliage should be a brighter shade of green, its flowers somewhat smaller (1/4" instead of 1/2"). According to a gardening e-friend, the specimen at Chanticleer Garden blooms from spring to fall, but ours don't start till well into summer. For what it's worth, what I consider to be amblyantha has seed pods generally smaller in length and girth than heterantha. The latter bloomed in its first year from seed, tthe former did not.

Indigofera amblyantha
pinkflower indigo
Dark purple pods ripen in late fall
Indigofera amblyantha
As many as 25 leaflets on our main specimen, which casts some doubt on its identification

We left this plant behind in our Pennsylvania garden (and wish it well); we don't grow it in Houston.

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Seed-starting details for this plant

  1. Seed from '02 garden. Baggy 70-75F (8%G, 7-13d)
  2. Seed from '02 garden. Baggy 70F (30%G, 3-6d)
  3. Seed from '08 garden. Sandpapered, baggy 70F (25%G, 4d)

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