When You Should Set Out Your Mums

You may have seen mums at your local garden center already. But is it too good to be true? Find out the optimal time of year to set out potted mums or add them to your garden beds to get the most out of their seasonal blooms.

Mums are a fall favorite with avid and beginner gardeners alike due to their vivid colors and tight, bountiful blooms. Mum-lovers usually can't wait to style their front porches in potted chrysanthemums, and we get it—we adore them, too. But just because retailers are beginning to sell annual mums doesn’t mean it’s their time to shine quite yet.

“If it’s still sultry and 100 degrees, they’ll only last a couple of weeks—so you’ll have to replace them faster,” says Justin Hancock, Costa Farms horticulturist. Justin says he comes across a fair number of customers who can’t wait for the start of fall and start decorating as soon as mums are available in August. Unfortunately, putting mums out when the weather is still quite warm means gardeners may end up replacing their plants two or three times between when they first start using purchased mums in containers and garden beds and when it gets cold.

For best results, keep your potted mums in the garage or inside your house until temps drop. And when picking out plants at your retailer, choose mums that are still budding and not in full bloom. That way you'll be treated to a longer blooming cycle once you have plants in place.

Related: Everything You Need to Know About Fall Mums

Two other factors to consider: what type of mums you're buying and where you want to use them. If you're simply hoping to use mums as an annual in a potted display or garden bed, you can opt for florist (or cutting) mums, which are typically grown in greenhouses and primarily used for indoor use. Enjoy them until the bloom die off and then compost them.

Hardy (or garden) mums are a different story. These mums are designed to be perennials in garden beds as long as they're properly planted and given the right care. They're best planted in the spring once the ground is free of frost, giving them summer to establish their roots in the soil before they become knockout bloomers in the fall. If you pick up hardy mums in the fall with the intention of keeping them around until the next blooming season, consider using them in pots this year, and bring them into your home over the winter to keep them alive.

Related: 5 Tips to Growing Mums in Containers

Long story short: There’s not a "best" time to put out your annual mums, but you’ll get optimal plant performance in cooler weather. Mid- to late-September is ideal if you want to love your mums for longer.

Related: Ideas for Growing Mums in Your Fall Garden

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