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Where is Amsonia Hubrichtii native?
Amsonia hubrichtii (Threadleaf blue star) grows in full-sun to partial shade. It forms a generous bush-like habit that can serve as a backdrop to summer flowers. Threadleaf blue star is a native to Oklahoma and Arkansas and is a real multi-season performer.
Is Amsonia Hubrichtii invasive?
Many cultivated species are listed as winter-hardy in USDA Zones 6 to 9, but Amsonia tabernaemontana and Amsonia illustris, which are native to more northerly regions, are listed as hardy to Zone 5. Bluestars are herbaceous perennials with woody crowns that slowly increase in size but are not invasive.
Is Amsonia Hubrichtii a perennial?
Amsonia hubrichtii was the Perennial Plant Association’s plant of the year 2011. This southern native was “discovered” in Arkansas in 1942 by an assistant to a botanist at the Missouri Botanical Garden – Mr. Leslie Hubricht, for whom it is named.
Is Amsonia poisonous?
Amsonia is a member of the Dogbane Family (Apocynaceae). Family members like the infamous oleander typically have milky or viscous sap that can be loaded with highly toxic alkaloids. The Bluestars’ latex sap is mildly irritating and not considered to be harmful to humans.
How tall does Amsonia Hubrichtii grow?
about 3 feet
From late spring thru early summer, 2-3″ wide clusters of small, light blue, star-shaped flowers are borne above the short mound of ferny foliage. After blooming, it quickly grows to reach a height of about 3 feet. Amsonia adds a billowy, finely textured element to the landscape.
How fast does Amsonia Hubrichtii grow?
Both ‘Princess Molly’ and ‘Princess Caroline’ finish in an average of six to eight weeks in 6-inch pots and eight to 10 weeks in 1-gallon containers. 1) ‘Princess Molly’, 2) ‘Princess Caroline’, 3) ‘Princess Molly’ (front), grows 14-20 inches tall.
Do you cut back amsonia in the fall?
Plants must be cut back in either the late fall or late winter to about 8 inches from the ground. Remember to wear gloves when working with Amsonia since stems release a white sap. Though not required, cutting them back again half way to the ground after flowering will result in even fuller growth.
Is amsonia a native plant?
One of the loveliest is Amsonia tabernaemontana, also known as eastern bluestar, or just bluestar. A native perennial with dense clusters of pale blue spring flowers and golden fall foliage, it deserves to be included in more northeastern gardens.
How do you care for amsonia Hubrichtii?
Amsonia thrives in most gardens with little care. It is low maintenance and easy to grow. Plant it in full sun or partial shade and moist soil of average fertility. If grown in too much shade or very rich soil, its habit will be open and floppy.
Should amsonia be cut back?
Can you divide Amsonia Hubrichtii?
To divide an amsonia root ball, simply cut sections of the root ball containing the plant’s crown and stems with a clean, sharp knife or saw. Dividing plants like this may seem brutal but the cuts to the root ball actually stimulate plant growth both above and below the soil level.
How do you care for Amsonia Hubrichtii?
Amsonia Plant Care In soils that are constantly moist, Amsonia prefers full sun. Otherwise, plant it in light to partial shade. Too much shade causes the plants to sprawl or flop open. Ideal Amsonia growing conditions call for a humus-rich soil and a thick layer of organic mulch.
What family is Amsonia?
DogbanesBluestars / Family
Is Amsonia Hubrichtii deer resistant?
A slightly toxic latex sap cause this plant to be unpalatable to insect pests and foraging herbivores like deer and rabbits. LANDSCAPE USES: Feathery fine textured foliage and a robustly rounded growth habit allow this Bluestar to perform well as an Accent plant.
Do I cut back amsonia in the fall?
Is Amsonia a native plant?
How do you divide blue star amsonia?
Should Amsonia be cut back in the fall?
Where can I find Amsonia hubrichtii?
Amsonia hubrichtii is native to fields and meadows in the midwest. It can be found growing naturally in Arkansas, Oklahoma, and Missouri. Place the crown about one half inch below the soil surface as this helps promote better eye development for the following season.
When does Amsonia hubrichtii turn yellow?
Deep green thread-leaf feathery foliage waits until Fall to strut its stuff, turning bright rich yellow. Intersperse Amsonia Hubrichtii in your border to provide texture and color all through the growing season. It is best when massed.
Is Amsonia a shrub or tree?
It grows into a dense mass, much like a small shrub. The cool blue flowers can be useful in toning down adjacent flower colors. The most valuable feature of amsonia is its fall color; the entire plant turns a stunning shade of golden yellow. It makes an excellent backdrop for fall-blooming perennials such as sedums and garden mums.
How do you plant Amsonia hubrichtii?
Intersperse Amsonia Hubrichtii in your border to provide texture and color all through the growing season. It is best when massed. Amsonia are low maintenance mid-western and southern natives that are easy to grow and unbothered by pests or insects.