Nothing says fall like a porch full of mums. But if you’ve ever tossed a tired pot into the compost pile in November, you’re not alone. How to grow mums successfully starts with a simple shift: treat garden mums as perennials, not one-season decorations. With the right spot and a little seasonal care, they’ll reward you with color for years.
What you’ll need
- Hardy garden mum plants or rooted cuttings
- Compost or slow-release balanced fertilizer
- Garden trowel and hand pruners
- Shredded bark, straw, or shredded leaves for mulch
- Watering can or hose
How to plant and care for mums
Choose a true garden mum. At a garden center or nursery, look for plants labeled “hardy mum” or “garden mum.” Florist mums are often sold as indoor gifts and rarely survive winter. Check the tag for your USDA hardiness zone; most garden mums are hardy in zones 5 to 9. Pick a compact plant with deep green leaves and no yellow or spotted foliage.
Plant in spring, in the sun. After the last frost, find a spot with at least six hours of direct sun a day and well-drained soil. Dig a hole twice as wide as the root ball and just as deep, then mix a few handfuls of compost into the removed soil. Set the mum at the same depth it was in its nursery pot, backfill, and water well. Space plants 18 to 24 inches apart so air can move around the leaves.
Water and mulch consistently. Mums have shallow roots and dry out fast. Check the top inch of soil often; if it feels dry, water slowly at the base. Aim for about 1 inch of water per week while plants are young, and more in hot, dry spells. Spread a 2-inch layer of mulch around the plant to keep the roots cool and hold in moisture.
Feed lightly in early summer. If growth looks slow, or your soil is poor, work a balanced slow-release fertilizer like 10-10-10 into the soil around the plant, following label directions. Compost works too. Stop feeding after mid-July, since extra fertilizer late in the season can push leafy growth instead of fall buds.
Pinch stems until early July. When your mum is about 6 inches tall, use hand pruners or your fingers to remove the top inch of each stem, cutting just above a pair of leaves. This makes the plant branch and grow fuller. Repeat every 2 to 3 weeks until early July; after that, flower buds need time to form.
Help it through winter. In zones 5 through 9, garden mums planted in spring can come back. Don’t cut the stems down in fall; leave them standing to catch snow and leaves, then trim them to 4 inches in late winter. In places with freezing and thawing cycles, cover the crown with 4 to 6 inches of loose mulch after the ground freezes to prevent heaving.
🌼 Note: If you buy a blooming mum in September, treat it as seasonal color. You can transplant it right away, but fall-planted mums have less time to establish roots and are far less likely to survive the winter. Plant in spring for the best chance at a true perennial mum.
No need to start with a big garden. One healthy garden mum in a sunny, well-drained spot can turn into a generous clump within a couple of years. When it returns in spring, divide it if you want more plants—then let the flowers do the celebrating come fall.
Related Terms:
- How to Grow Mums outdoors
- How to Grow Mums plants
- How to Grow Mums flowers
- how to grow fall mums