Using black walnut chips under a cedar tree

Should I use black walnut chips under my cedar tree?

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##FULL QUESTION## Dear *Gardening Life*, I have black walnut chips and shavings from a recently cut tree. Can I put this under and around my cedar trees? *—Sharon Tanner*

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##FULL ANSWER## Sharon, Juglone, the toxin in black walnuts, is concentrated in the nuts and roots but is present throughout the plant. I wouldn't use the chips as mulch, especially on cedars (*Thuja occidentalis*), which are susceptible to walnut toxicity. Generally, native species seem to fare better under black walnut trees so you might use your chips on native plantings but I think you're probably best to get them out of the garden altogether. Hope that helps! *—Karen York, Botanical Editor* Other questions recently answered by the GL team: Growing on a septic field How to battle weeds between flagstone and alternative options Mysterious orange powder on the lawn What to do with end-of-season potatoes on the vine How to control Japanese knotweed What to grow in a dry area The proper way to plant astrantia What is the star flower and how do I manage it? How do I eliminate my ant problem? Preventing red beetles from attacking lilies Vine types to grow on a new pergola Maintaining purple fountain grass Keeping bougainvilllea healthy throughout the winer How to rid invasive green goutweed Good garden uses for fireplace ashes Growing grape hyacinth indoors The best way to convert a lawn into a meadow The proper way to grow rhododendrons Eliminating beetle damage to spruce trees Annual resembling Japanese maple Planting ivy near cedar trees In search of the 'Sundance Kid' sunflower Caring for canna bulbs A supplier for barren strawberry ground cover Winter care for roses Cutting back mauna loa The best time to harvest curly-leaf lettuce Eliminating invasive trumpet Caring for double-flowering hibiscus trees Eliminating white aphids from honeysuckle vine Where to purchase Japanese blood grass An alternative to rhododendrons Growing a vegetable garden over a septic field Dividing and replanting daylilies Proper care for oakleaf hydrangea The best care for shrub roses 'The Fairy' Pest eating purple leaf sand cherry Preventing lawn brown spots Keeping plants sturdy Preventing suckers from a cut-down serviceberry tree Best tomato seeds to sow Preventing wind damage to grasses Plants to highlight a pool Reshaping yew tree The best way to replace a lawn Best screening plants for privacy Buying snowberries in Montreal Keeping 'Endless Summer' hydrangea growing strong The proper way to fill planters The proper way to grow hyacinths Boston ivy and rough winters Fast growing shade tree

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