PlantsFlowers

Threadleaf Bluestar

Threadleaf Bluestar (Amsonia hubrichtii)
(c) Brian Keener, some rights reserved (CC BY-NC) · CC BY NC

Amsonia hubrichtii

Zone 6a garden plant. Hardy through a Chicago winter unless the note says to pot it.

Pale blue in May, a gold mound in October

EasyFlowers
Light
Full sun–part shade
Moisture
Medium
Mature size
3 ft
Spacing
3 ft
Bloom or harvest
Flowers May, fall color Oct
How it spreads
Clump
What to buy
A gallon plant. It is slow the first year.
When to plant
Apr–May or Sep

In the design

Give it the width. The fall color is why it earns the space. Cut it back once in late spring only if it flops; don’t shear it into a meatball.

Plants that share this spot

More in this group

Reference details
Conservatism value
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Wetland indicator
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