Fall is the garden's way of saying, "I'm tired. Please don't make me do anything else."
You can mostly respect that. A few hours of the right work now (not a full weekend of raking, hacking and bagging) means fewer weeds, healthier soil and a garden that comes back in spring without a fight. Do the wrong work, like cutting everything to the ground and hauling every leaf to the curb, and you've thrown away free fertilizer and evicted half your helpful bugs.
Here are the 10 jobs that are worth it.
Start with anything that looks sick: powdery mildew, black spot, blight, leaf spots, or rotting stems and fruit. Pull it out, bag it, and put it in the trash. Your city's green-waste bin is fine too, since commercial composting runs hot enough to kill most diseases.
Keep it out of your backyard compost pile. Home compost rarely gets hot enough to kill plant diseases, so you'd just be spreading next year's problem around the yard. Not sure what you're looking at? Snap a photo and send it to your local Cooperative Extension office. They identify plant problems for free.
The urge to make the garden look "finished" is strong. Resist it.
Leave healthy seed heads and stems standing until late winter: coneflowers, black-eyed Susans, sedum, ornamental grasses. Birds eat the seeds, and native bees and other beneficial insects spend the winter tucked inside the hollow stems. The insects would appreciate it if we stopped confusing "tidy" with "vacant."
Do cut back:
Don't prune spring-flowering shrubs like lilacs, azaleas, forsythia or hydrangeas that bloom on old wood. They've already set next year's flower buds. Prune them now and you're cutting off next spring's show. Wait until right after they bloom.
Every weed you pull before it goes to seed saves you dozens next year. Pull anything that's flowering or seeding first.
Get the root, not just the top. Pull after a rain, when the soil is soft, and use a weeding tool for anything with a taproot, like dandelions. Snap off the top and it'll be back by April.
And identify before you yank. "Pull first, identify later" is an excellent way to remove the plant you spent $24.95 on in April.
Your trees have already delivered the material. No shipping charge. Leaves are free mulch, free compost and free winter housing for beneficial insects.
Here's what to do with them:
Mulch keeps soil from washing away, holds in moisture, keeps roots from heaving in freeze-thaw cycles, and cuts next year's weeds. Spread 2 to 3 inches of shredded leaves, wood chips or shredded bark over the root zone.
Keep it 3 to 6 inches away from tree trunks and shrub stems. Mulch piled against the bark traps moisture and invites rot, insects and rodents. Avoid "mulch volcanoes." Trees do not need turtlenecks.
Pet owners: Skip cocoa bean mulch. It smells like chocolate, and it's toxic to dogs for the same reason.
Fall is prime planting time for a lot more than you'd think. The soil is still warm, and the air is cool, so roots grow without the stress of summer heat.
Your local frost date matters more than the calendar. Plants cannot read national gardening calendars. Look up your USDA hardiness zone and first frost date before you plant.
Dog owners: Daffodil and tulip bulbs are toxic to dogs, and freshly dug soil is an invitation to dig. Plant them where your dog can't get to them, or lay chicken wire over the bed until the shoots come up.
Divide a perennial when it's crowded, flowers less than it used to, or has died out in the middle with a ring of growth around the edge. Daylilies, hostas, irises, black-eyed Susans and ornamental grasses are classic candidates.
The rule of thumb: divide spring and summer bloomers in fall. Divide fall bloomers like asters and mums in spring.
Do it at least four to six weeks before the ground freezes so the roots can settle in. Dig up the whole clump, split it with a sharp spade, replant the pieces at the same depth, and water them in well. Then keep watering weekly until the ground freezes.
And give the extras to friends. That's how innocent perennials become involved.
What your lawn needs in fall depends on what kind of grass you have. Your lawn doesn't know it's Labor Day.
Cool-season grasses (Kentucky bluegrass, fescue, ryegrass; most of the northern half of the U.S.): Fall is their big season.
Warm-season grasses (Bermuda, zoysia, St. Augustine, centipede; the South and Southwest): They're slowing down and heading toward dormancy.
For either kind, keep watering until the grass goes dormant or the ground freezes, but only when it hasn't rained. An inch a week, rain included, is plenty.
Find the pruning shears. Then:
While you're at it, empty and clean your pots and planters. Scrub them with soapy water and stack them upside down. Bring terra cotta and ceramic inside. Water soaks into them, freezes and cracks them.
Mower and gas-powered tools: Run the tank dry or add fuel stabilizer before storing. Store the gas can in a detached shed or the garage, never in the house, and well away from the water heater or anything else with a pilot light.
Walk the whole yard, phone in hand, and look for:
Take photos of every bed while you can still see what grew where. Write down what worked, what didn't, and which plant took over everything. Tomatoes took over civilization. Again. In March, you'll be glad you did.
Pull diseased plants and rotting produce and throw them away. Don't compost them. Then give the empty beds something to do over winter:
Don't leave the soil bare. Rain and wind will wash away your best topsoil.
Write down where everything grew this year, so you can rotate crops next spring. Tomatoes, peppers and eggplant shouldn't go in the same spot two years in a row. Write it down. "I think the tomatoes were over there" becomes surprisingly convincing even when completely wrong.
Sort your pots into four groups:
Before anything comes inside, check for pests. Look under the leaves and around the soil surface, then hose the plant down. You're bringing in the plant, not establishing an indoor aphid sanctuary.
In any area where it freezes:
While you're at it, look for leaks, broken drip emitters and sprinkler heads aimed at the sidewalk.
Only if your soil needs it, and the only way to know is a soil test. The exception is cool-season lawns, which do get fed in early fall (see tip 8).
In flower beds and around shrubs, skip the high-nitrogen fertilizer. It pushes out tender new growth that gets killed by frost. Spread an inch of compost instead. It feeds the soil slowly all winter. Plants are not impressed by generosity when what they needed was something else.
Store fertilizers and garden chemicals in their original containers, on a high shelf out of reach of kids and pets. Slug and snail baits, rodent poison and some fertilizers are especially dangerous to dogs and cats. If your pet gets into something, call the ASPCA Animal Poison Control Center at 888-426-4435. If a child swallows something, call Poison Control at 1-800-222-1222.
Leave a few seed heads standing, a pile of leaves in a back corner and a bundle of hollow stems along the fence. That's a winter hotel for the good garden bugs that will eat the bad bugs next summer, and a winter buffet for the birds.
Keep the paths, the front yard and the patio tidy. There's room between "sterilized landscape" and "we haven't seen the shed since 2019."
Winter is coming. It will have notes.
You don't have to spend an entire weekend ceremonially closing the garden. Set a timer:
Done. The garden has survived seasons without you before. It can manage the evening.
Fall gardening isn't about making the yard look finished. It's about setting it up for spring: pull the sick plants, stop the weeds before they seed, put the leaves to work, plant what needs a head start, and protect the soil, the tools and the pipes from winter.
Then go inside and make a cup of tea. And when everything comes up gorgeous next April and the neighbors ask your secret, smile and say thank you. Don't explain that October-you did all the work.
Once the garden's put to bed, the garage and the closets are next. My book Room by Room is a practical, no-guilt plan to declutter every space in your house, one room at a time.
And The Daily Home Reset keeps the house running on 15 minutes a day all winter, so you're not starting from scratch in spring.
The garden's tucked in for winter. Get the rest of the yard and house ready for the season with these related guides:
Free 15-Minute Daily Reset Checklist
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