Black Walnut Trees
Q.

Shrubs not susceptible to black walnut’s juglone for zone 6, long season of interest with flowers and or leaves and or berries

Zone 08833 | Anonymous added on February 14, 2020 | Answered

I have several black WALNUTS TREES IN MY YARD - THEY EMIT JUGLONE WHICH INHIBITS THE GROWTH OF SEVERAL (NOT ALL PLANTS). I AM TRYING TO ESTABLISH A SHRUB GARDEN AND I WOULD LIKE TO KNOW WHICH SHRUBS WILL GROW UNDER OR NEAR BLACK WALNUTS. WHICH SHRUBS ARE NOT SUSCEPTIBLE TO JUGLONE (FULL SUN/ PART SUN/ FULL SHADE). LOOKING FOR LONG SEASON(S) OF INTEREST WITH FLOWERS/FOLIAGE/BERRIES. SOIL IS NEUTRAL TO SLIGHTLY ALKALINE/ BUT I CAN ADJUST IT/ VERY SLIGHT INCLINE SO DRAINS PRETTY WELL/ SOME CLAY BUT I CAN EASILY AMEND HEAVILY WITH COMPOST / ZONE 6

A.
A.Answers to this queston: Add Answer
GKH_Susan
Certified GKH Gardening Expert
Answered on February 14, 2020

Here is a good list from Penn State Extension:
https://extension.psu.edu/landscaping-and-gardening-around-walnuts-and-other-juglone-producing-plants

Rose of Sharon has a long bloom period. Most of the others have a bloom period in spring or summer but not as long lasting as Rose of Sharon.

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