Classification
2109
Medium (6-8") Informal Decorative, Purple
Size
Medium (6-8")
Form
Informal Decorative
Color
Purple
Growing Info
- Height: 2.5–3.5 ft
- Bloom season: Midsummer to first frost
- Hardiness zones: 8-11
- Staking needed: Yes
- Pinching: Pinch the center shoot at 12" tall for bushier growth and more blooms.
Growing Allen's High Voltage?
Where to Find Allen's High Voltage Tubers
Tuber availability changes each season. Search current listings:
Search for Allen's High Voltage Tubers →💡 Tip: Most suppliers open orders in December–February for spring shipping. Popular varieties sell out fast!
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