Q.Growing-Dutchman’s-pipe-seed
The plant is growing-when do I put them outside? Will they winter over in zone 5?
GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on September 4, 2020
They are hardy to zone 4 but if yours are just seedlings I'd be wary of putting them outside. Will they be in the ground? If so, they should be OK if you mulch over them real well after it freezes.
https://plants.ces.ncsu.edu/plants/aristolochia-macrophylla/
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