Does Amsonia have deep roots?
Most native species in the Amsonia genus do well in hardiness zones 4 to 9. They prefer a range of full sun to partial shade, but too much shade can cause them to become open and floppy. Moist soil conditions are best. Mature plants, however, can tolerate dry spells because of a deep taproot and dense fibrous roots. Benefits: Amsonia is a low-maintenance plant, requiring minimal care once established. It’s drought-tolerant and can thrive in various soils as long as they are well-draining. Its long-lasting blooms attract pollinators like butterflies, contributing to the ecosystem of your garden.Many plants go well with amsonia, including bee balm, black-eyed Susan, coneflower, coral bells, helenium, hosta, iris, milkweed, oakleaf hydrangea, peony, tickseed, and ornamental grasses such as little bluestem.Blue Ice Amsonia is a clump-forming perennial that will grow 15 to 18 inches tall and wide. This plant has rhizomes and will spread, but it takes time for Amsonia to fill in an area.Plant 1/4 inch deep in spring or fall. Tip cuttings taken in May, or woody cuttings taken any time, are also an effective method of mass producing Amsonia. Plants may be increased by root division while the plants are dormant. Amsonia prefers rich soil, high organic matter, and moist locations.
Can I divide Amsonia?
Dividing: if amsonia plants become crowded or weak, divide clumps in spring or fall to reinvigorate growth. Amsonia are best divided in the spring or the fall while they are dormant. Cut back any top growth and dig out the clump, extracting as much of the rootball possible. Look for the sprouts (or eyes) on the roots and include at least two in each divided chunk of the rootball.
Should Amsonia be cut back?
Pruning: Trim back the stems after the plant has finished flowering to encourage new growth and maintain a tidy appearance. In late fall or early spring, you can cut the plant down to ground level to rejuvenate it. Fertilization: Amsonia doesn’t require heavy feeding. Pruning and deadheading: At the end of the season, the stems can be cut close to the ground or left standing for winter interest. Deadheading of amsonia is rarely necessary, unless you want to prevent self-seeding.
What to plant next to Amsonia?
Best Plants To Grow With Amsonia Match Amsonia with spring and summer blooming plants, like oakleaf hydrangea, cosmos, or catmint, to create a lush cottage look. Bluestars support early-season pollinators including native bees and hummingbirds and are the host plant for several species of butterflies and moths. As with many members of the Apocynaceae family, including milkweed (Asclepias), Amsonia produce a milky sap that discourages browsing by deer and other mammals.