Growing Info
- Height: 2.5–3.5 ft
- Bloom season: Midsummer to first frost
- Hardiness zones: 8-11
- Staking needed: Not typically
- Pinching: Pinch the center shoot at 12" tall to encourage branching.
Growing Grand Duc?
Where to Find Grand Duc Tubers
Tuber availability changes each season. Search current listings:
Search for Grand Duc Tubers →Tip: Most suppliers open orders in December-February for spring shipping. Popular varieties sell out fast!
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