Mature height
70 to 90 ft
Growth rate
Medium
Best time to prune
Late winter
Risk level
Medium
Watch for
Walnut wilt, heavy limbs, toxins that harm nearby plants
01
Arborist notes
Black walnut gives valuable timber but releases a chemical that stunts some garden plants. Prune dead wood often because large limbs fall without warning.
Free check · honest answer
An arborist looks the tree over, tells you what is going on and what it would cost to fix. If it needs nothing, we say so.
Certified arborists in Alder County since 2004. Fully insured, never subcontracted.
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