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Sunday - April 01, 2012
From: Hillsborough, NC
Region: Southeast
Topic: Poisonous Plants, Shrubs
Title: Will Calycanthus floridus (Eastern sweetshrub) grow near black walnut trees?
Answered by: Nan Hampton
QUESTION:
Will Calycanthus floridus survive if planted near Black Walnut trees? If not, can you recommend a similar bush that will?ANSWER:
One comment on the Dave's Garden page from "gonedutch" in Fairport, NY says that Calycanthus floridus (Eastern sweetshrub) tolerates growing near black walnuts, but I could find no mention of Eastern sweetshrub in either of the two articles I found about plants that are tolerant of walnut/juglone toxicity:
- Plants Tolerant of Walnut Toxicity from the Morton Arboretum near Chicago, Illinois.
- Juglone Tolerant Plants from Hawks Nursery.
So, I suppose it is possible that Eastern sweetshrub is tolerant of juglone, but I can't say for sure.
However, here are several shrubs native to North Carolina that are listed as tolerant of growing near black walnuts:
Lindera benzoin (Northern spicebush)
Cercis canadensis (Eastern redbud)
Cornus florida (Flowering dogwood)
Ceanothus americanus (New jersey tea)
Chionanthus virginicus (White fringetree)
Physocarpus opulifolius (Atlantic ninebark)
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