Threadleaf Blue Star
Amsonia hubrichtii
Other Common Names:Â Arkansas Amsonia, Blue Star, Bluestar, Blue Star Amsonia, Hubricht’s Amsonia, Threadleaf Bluestar
Plant Details
USDA Plant Hardiness Zones: 5a-9b  Find Your Zone
Plant Type:Â Herbaceous Perennial (Native)
Height at Maturity:Â 2-3′
Width at Maturity:Â 2-3′
Spacing:Â 24″ for mass planting
Spacing:Â 24″ for mass planting
Growth Habit / Form:Â Upright
Growth Rate:Â Moderate
Flower Color: Â Powder Blue
Flower Size:Â 1″
Flowering Period:Â Early Spring to Early Summer
Flower Type:Â Clusters of Star Shaped
Fragrant Flowers:Â Â No
Foliage Color:Â Green leavesÂ
Fragrant Foliage:Â No
Berries:Â Â No
Berry Color:Â No
Sun Needs:Â Full Sun to Part Shade
Water Needs:  Average to to Moist but well Drained
Soil Type:Â Â Clay (Amended), Loam, Sand (Amended), SiltÂ
Soil Moisture / Drainage:Â Consistently Moist to Wet
Soil pH:Â 6.2-7.0 (Slightly Acidic to Neutral)
Maintenance / Care:Â Low
Attracts:Â Visual Attention, Butterflies, Pollinators
Resistances:Â Deer, Disease, Insect, Wet Soil, Rabbits
Description
An easy-to-grow and beautiful North American native flowering perennial that won the 2011 Perennial Plant Association’s Plant of the Year Award, the Threadleaf Blue Star, Amsonia hubrichtii, provides three season interest in the garden. In spring, the needle-like deep green foliage has a soft, feathery appearance that is sure to attract attention. In spring to early summer, abundant clusters packed with pretty, star-shaped, sky-blue flowers crown plants at the top of every stem attracting both visual attention and the butterflies. But one of this plants most attractive features is the bright and rich golden-yellow fall foliage, which is something we always look forward to seeing in our gardens.
Landscape & Garden Uses
Growing 2 to 3 feet tall and wide, Blue Star is excellent for naturalizing along sunny to partially shaded woodland borders, in wild flower gardens, or the periphery of stream of pond.
Suggested Spacing:Â 24 inches apart for groupings; 5 feet apart for space between plants
Growing Preferences
Blue Star is very easy to grow in most any average, medium to wet, well-drained soils in full sun to part shade. Plants will grow taller in too much shade may tend to flop but can be cut back after flowering. Just wear gloves when pruning this plant because the milky sap in the stems can cause skin irritation on some people.
Plant Long & Prosper!
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Nice looking and healthy Blue star Amsomnia. It was shipped with care and we received it promptly via Fedex. Appreciate Wilsons Bros for making this available.———————————————-We are so glad you are pleased and we hope you enjoy it for years to come! Thanks for the awesome review! 🙂 Beth Steele | WBG
Never hearing of this plant (Amsonia) before, I decided to try it because it is unusual and provides interest through many seasons. The plants arrived in perfect condition with lots of delicate foliage which was also in perfect condition. Will order more next season.————————————————————————We are so glad you are pleased and we hope you enjoy them for years to come! Thanks for the kind words and great review! 🙂 Beth Steele | WBG
Looking forward to adding this perennial to our semi -shaded garden. It ls unique powder blue flowers will ‘shine’ in the filtered light.We are so glad you are pleased with your purchase! Thanks for the great review! Beth | WBG 🙂



























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