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You are here: Home / Plants / Are Mums Perennials or Annuals?

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Are Mums Perennials or Annuals?

Last Updated April 25, 2022 By Jena Slocum

There are two basic types of mums: florist mums, also known as potted mums, and garden mums, also known as hardy mums. Most florist mums are annuals, while potted mums can be perennial, but it depends on where you live and the season you buy and/or plant them. Garden mums are perennials that are not affected by these two criteria.

Mums are a broad category that include many different varieties. Some of these are seasonal, some are perennial, and some are annual. So while some mums are perennial, others are not.

What Mums Come Back Every Year?

Both potted mums and garden/ hardy mums return every year, if planted early enough and properly cared for. There are thousands of cultivated varieties of mums (technically classified as chrysanthemums) and even 40 wild species.

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Mums are one of the most popular types of flowers, prized for their beautiful colors and hardiness. They also have the benefit of helping reduce air pollution and being pest-resistant.

Do Potted Mums Come Back Every Year?

Potted mums can return every year if properly cared for and repotted in an appropriately sized container after purchase.

However, it’s important to know that potted mums are more fragile than garden mums. They can’t survive being planted in a backyard and, most likely, will need to be brought inside in order to survive the winter. This is especially true if you live in a region that experiences a hard winter (below 32 degrees Fahrenheit) or regular frost overnight.

Increasingly, florist mums are being cultivated and sold as annuals because of their fragility. Many no longer produce underground runners, threatening an already shallow (and therefore delicate) root system.

How To Get Florist Mums To Grow Every Year

Here are some tips for keeping florist mums alive through the year and giving them the best chance at coming back as perennials:

  • Pot them in a container that’s roughly one to two inches larger (so for a six-inch mum, that would involve a seven- or eight-inch pot)
  • When outdoors, place them so that they receive at least five hours or morning sun or shaded afternoon sun; when indoors, make sure they get at least six hour of indirect light
  • When outdoors, water them often to prevent the roots from drying out; when indoors, frequently check the first inch of topsoil and cut back on watering, if necessary
  • Ensure the container has adequate drainage to prevent the mums’ roots from sitting in water, which will eventually cause root rot
  • Avoid placing them near air vents, since a direct flow of heat (during the cool months) or A/C (during the warm months) can adversely affect their growth

When To Buy Fall Mums

If possible, it’s best to buy and plant mums during the early spring. For many people, mums appear start to appear in stores around September and October. However, planting mums during these months doesn’t give the root systems much time to establish themselves before winter arrives.

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This may mean that you have to buy your mums online. Alternatively, you can call local nurseries and gardening centers to see if they keep mums in stock year-round instead of on a seasonal basis.

When To Plant Hardy Mums

Mums should be planted in the spring to have the best chance at surviving winter and returning as perennials. Though it’s possible for mums that are planted in early fall to survive, it’s less likely.

The earlier you can get them and plant them, the better. If possible, aim for early spring, especially if you live in Zones 4 – 5 (i.e., a cold region). For most regions, September is the latest you can plant hardy mums and expect them to survive.

How To Grow Mums As Perennials

In order for mums to grow as perennials and survive the winter, it’s essential that you plant them as soon as possible. The more time they have to establish themselves, the more likely it is they’ll be able to survive the winter and return next year. Another key factor is ensuring they have hearty drainage.

Mums, like many flowers and plants, also need good drainage in order to survive. This means that you’ll need to add compost to your soil mixture when planting the mums. Mulch also has the benefit of insulating mums’ roots, which are naturally shallow. Generally, two inches is enough to drain and protect.

For areas that are naturally clay-heavy, mulch is even more critical for ensuring your mums’ survival. In these areas, it’s safer to go with a three-inch layer.

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When winter arrives, you’ll need to add more mulch (anywhere from three to four inches) over the plant, making sure to get it between the stems for protection. Other natural insulation, such as straw or shredded bark, it also helpful in addition to the mulch.

How To Get Garden Mums To Grow Every Year

Here are some other tips and tricks for growing mums as perennials: 

  • Choose a sunny spot that receives at least six hours of direct sunlight each day
  • Make sure to follow spacing directions when planting and give your mums plenty of room to grow
  • Keep your mums moist enough to avoid wilting, but avoid overwatering
  • Fertilize in spring using a 5-10-10 or 10-10-10 slow release mixture

If you’re successful at growing mums as perennials, you’ll also need to divide them in the spring to avoid overcrowding. This involves cutting off a stem, including the roots, using a sharp tool, such as a trowel or garden knife. Then, plant them in a free section of the garden and continue caring for them as usual.

Are Mums Perennials Or Annuals?

Perennials return every year, whereas annuals only grow for one season. Mums are perennials and will bloom in the spring for several years in a row, if taken care of so that they can survive the winter. Whereas annuals have to be planted anew every year, perennials can last for years at a time. Mums, specifically, can last anywhere from three to five years.

There are pros and cons to both perennials and annuals. For example, it’s more convenient that mums return every year, which prevents you from having to constantly buy and plant new flowers. But they also require more upkeep, especially when preparing them for winter.

If you’re wondering about other plants, we also cover Are Dahlias Perennials.

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Filed Under: Plants

About Jena Slocum

I've been an avid DIYer since owning my first home in 2003. I love working on my backyard taking a blank slate and making a beautiful space to gather with friends and family. I love building hardscapes like decks, pergolas and outdoor kitchens as well as getting my hands in the dirt planting anything that blooms, smells good or is edible.

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