Amsonia, ‘Storm Cloud’
Amsonia tabernaemontana
$19.98
Amsonia tabernaemontana
Description
2024 Proven Winners National Landscape Perennial of the Year®Native perennials are growing in popularity, and Bluestar is a classic North American plant. ‘Storm Cloud’ is an improved selection that performs well for both northern and southern gardeners. In spring, new stems emerge nearly black, with very dark green leaves highlighted by silvery veins. The stems retain their dark color throughout the season. In late spring, light periwinkle‑blue, star‑shaped flowers blanket the foliage and continue blooming for many weeks. While spring is the main season of interest, the plant maintains an attractive presence through summer and fall. Its broad, mounded form makes it well suited for use as a shrub substitute in the landscape. Younger plants have a more vase‑shaped habit, so be sure to allow enough space for mature growth. This easy‑care perennial is heat and humidity tolerant, deer resistant, and an excellent choice for gardeners seeking low‑maintenance or native plants.Photo courtesy of Walters Gardens Inc.Additional information
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For reference only:
#1 container : commonly known as a 1-gallon pot : 152 to 251 cubic inches.
#2 container : 320 to 474 cubic inches.
#3 container : 628 to 742 cubic inches.
#5 container : commonly known as a 5-gallon pot : 785 to 1242 cubic inches.
| Pot Sizes (inches) | Pot Equivalent (U.S. Gallons) | Dry Soil Needed (Approx. cu.ft.) |
| 4″ pot | pint / 0.5 quart / .125 gallon | 0.01 ft3 |
| 5-6″ pot | quart / 0.25 gallon | 0.03 ft3 |
| 7-8″ pot | 1 gallon | 0.13 ft3 |
| 8.5″ pot | 2 gallon | 0.26 ft3 |
| 10″ pot | 3 gallon | 0.40 ft3 |
| 11″ pot | 4 gallon | 0.53 ft3 |
| 12″ pot | 5 gallon | 0.66 ft3 |
| 13″ pot | 6 gallon | 0.80 ft3 |
| 14″ pot | 7 gallon | 0.94 ft3 |
| 16″ pot | 10 gallon | 1.33 ft3 |
| 18″ pot | 15 gallon | 2.00 ft3 |
| 21″ pot | 20 gallon | 2.67 ft3 |
| 24″ pot | 25 gallon | 3.34 ft3 |
| 30″ pot | 30 gallon | 4.01 ft3 |
| Pot Sizes (inches) | International (Liters) | |
| 4″ pot | .5 L [.473] | |
| 5-6″ pot | 1 L [.946] | |
| 7-8″ pot | 4L [3.78] | |
| 8.5″ pot | 7.5 L [7.57] | |
| 10″ pot | 11 L [11.35] | |
| 11″ pot | 15 L [15.14] | |
| 12″ pot | 19 L [18.92] | |
| 13″ pot | 22.5 L [22.71] | |
| 14″ pot | 26.5 L [26.49] | |
| 16″ pot | 38 L [37.85] | |
| 18″ pot | 57 L [56.78] | |
| 21″ pot | 75.5 L [75.70] | |
| 24″ pot | 94.5 L [94.63] | |
| 30″ pot | 113.5 L [113.56] |















