Fall Garden Cleanup: What to Do Before Winter

Fall garden cleanup is about finding the right balance. Some tasks are essential for preventing disease and protecting your soil. Others — like cutting down every perennial — actually harm your garden by destroying winter habitat for beneficial insects. Here's what to do and what to skip.

Remove Diseased Plant Material

This is non-negotiable. Pull up and dispose of (don't compost) any plants that had disease issues: blighted tomatoes, mildewed squash, rust-infected beans. Disease spores overwinter in plant debris and reinfect next year's crops. Clean up fallen fruit to prevent pest cycles. Sanitize tomato cages and stakes with a 10% bleach solution.

Protect Your Soil

Never leave soil bare over winter — it erodes, compacts, and loses nutrients. Plant cover crops like winter rye, crimson clover, or hairy vetch on empty beds. They protect soil, add organic matter, and some fix nitrogen. If cover crops aren't your thing, apply a thick layer (4-6 inches) of leaf mulch or straw.

What to Leave Standing

Leave healthy perennial stems standing through winter. Native bees nest in hollow stems. Birds eat seed heads. Dried grasses and flowers provide winter beauty. Leaf litter under shrubs shelters overwintering beneficial insects like ladybugs. A perfectly tidy garden is an ecologically dead garden. Embrace a little mess.

Prepare for Spring

Plant spring-flowering bulbs: tulips, daffodils, alliums, and crocuses. Take soil tests now so you have results before spring planting. Drain and store hoses before freezing weather. Clean, sharpen, and oil tools. Inventory remaining seeds and make a wish list for next year's seed orders. Plan next year's crop rotation.