Superior selection with nearly black sprouts in early spring, very dark stems for the whole season, bluish flowers in early spring (for 4-6 weeks) and yellow foliage color in the fall.
Tough, adaptable and long-lived perennial, that is completely deer and rabbit resistant.
'Storm Cloud' like any other Amsonia takes it's time and needs several years to achieve full mature size (this is always proof of longevity of the plant).
Young plants form upright vase shape clump, that ages to wide rounded, shrubby-looking mounds of 24-30" tall x 30-42" wide.
Full sun, half shade (4-6 hours of sun), virtually any soil (incl. clay) with average moisture. Don't plants in waterlogged soils.
'Storm Cloud' is heat, humidity tolerant and grows well deeper in south, as well as in northern areas and is hardy in zones 4 to 9.
Black walnut tolerant. Attracts some pollinators in the spring, doesn't suffer with pests and diseases.
The species of Amsonia tabernaemontana is native to southern states (from Texas) diagonally across the USA to northeastern states, see the USDA distribution map.
Goes well with many shorter or taller perennials and grasses for sun/half sun/half shade (the more sun, the better and better fall color). The look reminds of smaller shrub, and can be used with true shrubs.
Pictures copyright : Walters Gardens
Pot size : square 3.5" x 4" deep perennial pot