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String Theory Threadleaf Bluestar
Amsonia 'String Theory' PP34419
Threadleaf Bluestar
Currently unavailable
A dense spring flowering perennial with stalks of thread-like foliage that remain green from spring until fall when it turns to glowing golden orange. Each stalk is topped with clusters of tiny star-shaped light blue flowers in late spring. Tolerates a range of conditions and is low maintenance. Best foliage and blooming with adequate irrigation. Bred from plants native to the Great Plains region. Works well in mass plantings, as a border, or parkstip filler. Can tolerate clay soils with higher moisture retention.
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Plant facts
Good to know
- Attracts pollinators.
- Deer resistant.
- Good fall color.
- A good park-strip plant (Flip the Strip collection).
- Low maintenance.
- Suitable for Utah Lake secondary water systems.
Quick answers
How big does String Theory Threadleaf Bluestar get?
About 18-24" tall and 36" wide at maturity.
How much sun does String Theory Threadleaf Bluestar need?
Full Sun to Part Shade (3 to 6+ hours Sun).
How much water does String Theory Threadleaf Bluestar need?
Moderate water use.
Will String Theory Threadleaf Bluestar grow in Utah and the Intermountain West?
It is rated hardy to USDA zone 4, so it suits sites in zone 4 or warmer, which covers most of the region. The Salt Lake Valley floor is mostly zone 7; benches, mountain valleys and high plains in Utah, Idaho, Montana, Colorado and Wyoming are colder, often zones 3–6, so check the zone for your site.
Is String Theory Threadleaf Bluestar deer resistant?
Yes, deer usually leave it alone.
Where can I buy String Theory Threadleaf Bluestar in Utah?
Progressive Plants in Copperton, Utah carries it, but it is not available right now. You can join the waitlist to hear when it's back.
Can landscape contractors buy String Theory Threadleaf Bluestar wholesale?
Yes. Landscape contractors and architects with a Progressive Plants wholesale account get trade pricing, bulk ordering and shipping across Utah, Idaho, Montana, Colorado, Wyoming and Nevada on our own trucks or by freight ($1,500 minimum outside our local delivery area). Apply at progressiveplants.com/wholesaleapp.html or call 801-565-7333.
Find similar plants
PerennialsPlants that Attract PollinatorsDeer Resistant PlantsPlants with Fall ColorPark Strip Plants (Flip the Strip)Plants for Secondary Water