When fall arrives, it's hard not to regret the passing of all the summer blooms we love so much: pompon dahlias, Shasta daisies, African daisies, little zinnias, asters, coreopsis, and calendulas. But take heart, for the fall garden offers all these flower shapes from just one plant, the chrysanthemum. Hundreds of hardy cultivars provide an array of colors and bloom shapes, making mums the divas of the autumn garden. The blooms last for weeks, not days, and the sheer number of flowers per plant will convince anyone that this flower really likes to show off. Add the mum's impressionistic abilities to its longevity, and you have a plant that pulls its weight in the garden! Check out all about mums and add them to your fall garden this season!
Decorating with Mums
Because of their tight, mounded habit and stunning bloom cover, garden mums are perfect for mass plantings. To get the maximum effect from far away, stick to only one or two colors. Another possibility is to arrange a gradual transition of related colors in an ombre effect. Look around your yard to see what colors would best complement the existing landscape.
If you decorate for fall with pumpkins and gourds, choose orange, bronze, yellow, and creamy white mums. If you have a lot of evergreen plants that provide a backdrop of varying shades of green foliage, try bright pinks, lavenders, pure whites, or reds. With such bold colors, a large grouping of mums can excite even the most drab of fall landscapes.
Mums in Containers
Garden mums also make great container plants. They're just right for popping into a clay pot, lining up in a row in a window box, or placing in the center of a mixed container with trailing foliage plants all around. Many landscape plants can provide a backdrop for groupings of mums. For texture, choose ornamental grasses, berry shrubs, sedum, or almost any conifer.
To get the most from your mums, choose cultivars according to their bloom times. It also helps to coordinate bloom time with the length of fall in your location. Most garden mums will withstand a light fall frost, but finding the right cultivars will provide the longest possible amount of pleasure.
Annual or Perennial?
Mums aren't as expensive as many perennials, so if you choose to, you can plant them as annuals without worrying that you've spent too much money on something that might not live more than one season. If you're an impulse buyer, you'll probably see pots of colorful mums this fall and not be able to resist.
Fall planting lessens the chance of winter survival, however, since roots don't have time to establish themselves. If you want something more permanent and are willing to provide proper care such as mulching and pinching to encourage compact growth and more blooms, plant mums in the spring and allow them to get established in the garden. This will improve their chances of overwintering and reblooming the next year. Some plants will even produce a few blooms in the spring before being pinched for fall flowers.
Hardy vs. Florist Mums
Florist (or cutting) mums and hardy (or garden) mums come from the same original parent—a golden-yellow daisylike mum from China. Today's hybrids in both categories are the results of endless crosses between several species from China and Japan. The result of such hybridization performed over hundreds of years is different types of mums that perform for two distinct purposes.
Florist mums are large-flower plants with many possible bloom forms, from quilled to pompon to spider and more. Grown in greenhouses and used only as indoor plants, florist mums produce few, if any, underground stolens, which are necessary if the mum is to survive cold weather. Florist mums planted outside are most likely being used as short-term bedding plants that will be removed when the blooms are spent. You can plant a potted florist mum you receive as a gift, and it may grow for the summer, but it will not survive the winter, no matter how much protection you give it. Garden mums, on the other hand, produce underground stolens and can survive cold better. Most garden mums are perennials in Zones 5 to 9 and much tougher than florist types. Some cultivars are less hardy than others and can be killed by an early spring frost.
Whether you're looking for a quick splash of color or a fixture for your border, mums are the pick for a fabulous fall.
Tips for Growing Mums
When it comes time to plant mums, consider these factors:
Choose a spot that gets at least six hours of sun a day. Plants that don't get enough sunlight will be tall and leggy and produce fewer, smaller flowers.
Mums thrive in well-drained soil. Heavy clay soil should be amended. If your yard is soggy after the slightest rain, grow mums in raised beds with friable soil for good root growth.
If the soil is too dense, add compost and prepare to a depth of 8-12 inches for best performance. Mums' roots are shallow, and they don't like competition. Plant mums about 1 inch deeper than they were in the nursery pot, being careful with the roots as you spread them.
Trim off the previous year's stems as soon as the new spring growth begins to show.
Water newly planted mums thoroughly, and never let them wilt. After they are established, give mums about an inch of water per week. When bottom leaves look limp or start to turn brown, water more often. Avoid soaking the foliage, which encourages disease.
Plants set out in spring should get a 5-10-10 fertilizer once or twice a month until cooler weather sets in. Don't fertilize plants set out in fall as annuals, but plants you hope to overwinter should get high-phosphorus fertilizer to stimulate root growth.
Prepare mums for winter after the first hard frost. Mulch up to 4 inches with straw or shredded hardwood. Fill in around the entire plant, spreading well between branches. Pinch off dead blooms to clean up the plant, but leave branches intact. Mums have a better chance of surviving if you wait to prune old stems until spring. As soon as the weather warms, pull away mulch to allow new shoots to pop up.
Mums grown as perennials need to be divided every couple of years. Divide in the spring after the last hard frost and after you see new growth starting. Dig up the plant in one piece and separate outer pieces from the center with a clean and sharp spade or large knife. Replant the outer portions into a rejuvenated bed, and discard the original center of the plant.
You may notice aphids, leafhoppers, or spider mites, but they are not likely to harm the plant.
Pinching Mums for Better Bloom
The key to those full, rounded domes of blooms that you associate with mums is pinching to create more branching and keep plants compact. Don't hold back—just a few minutes here and there will reward you with a thick, solid-looking plant.
If you bought large, full plants in the fall, they have already been pinched and are ready for planting. Young spring plants will need pinching for maximum bloom and best plant shape.
Start pinching as soon as you see a good flush of buds. Pinch about half of the tender new growth at the top of the shoot; choose some stems with buds and some without. Repeat the process with every 3 to 5 inches of growth (about every two to four weeks) until July 4. Stopping then ensures you will get good bud formation and blooms in fall.
Also known as florist mums, these chrysanthemums have long, tightly overlapping petals. They can be either incurve (where petals curve up and in toward the flower center) or reflex (where petals curve out and down, away from the flower center). Some of the most common decorative varieties are 'Coral Charm', with bright purple, pink, and peach petals, and 'Fireflash', which holds true to its name with firey orange- and yellow-colored petals.
Also known as button mums, these fluffy mums produce masses of small, petal-packed blooms in an abundance of colors. Some common varieties of the pom pom chrysanthemum are 'Tinkerbell', 'Barbara', 'Patriot', 'Ruby Mound', 'Garnet', and 'West Point', all possessing small, spherical flowers from summer to frost.
Single and Semidouble
You may often mistake single and semidouble mums for daisies because they look so similar. These mums have one (single), or two to three (semidouble) outer flower petals, growing very close together from the center disk. These type of mums grow a stunning 1 to 3 feel tall, perfect for growing along a garden fence. Some of the most common single and semidouble varieties are 'Single Apricot Korean', with shades of peach, and 'Crimson Glory', with shades of deep, crimson red.
The name truly fits this type of mum, sprouting spoon-shaped petals. These flowers only grow about 4 inches in diameter, making it a petite mum to add to your garden that won't take up too much space. The most popular of the spoon mums is 'Kimie', showing off orange petals with an ombre effect of yellow tips at the end of the petals.
Spider chrysanthemums look a lot like the quilled and anemone mums. The only difference is in their thin, spider-like petals! Some of the most common spider mums are 'Western Voodoo', sprouting colors of orange and yellow, 'Yellow Rayonnante', showing off curvy petals, and 'Seiko Fusui', containing long, yellow, spider-like petals.
Quilled mums resemeble the single daisy type, only with the tubular petals. This is different from the full quill flower form, which is almost always seen only in florist, or decorative, mums. Some of the most popular varieties for quilled mums are 'Mammoth Yellow Quill', spikes of yellow, and 'Seatons Toffee', with red spikes resemblines sparklers on the Fourth of July.
Resembling the long petals of 'Spider' and 'Spoon' mums, 'Anemone' has long petals, just more flat than it's semi-twin. This mum has one or more rows of single flat petals topped with a raised center of tiny disk florets. The florets are usually a darker color. These cute little flower only grow about 4 inches in diameter, just like 'Spoon' mums. The most common anemone varieties include 'Dorothy Mechen', showing off light purple flowers, and 'Adrienne Mechen' a close cousin sprouting a pink center, trailing into bright white flowers at the tips.
Varieties to Look For
Look for these recently introduced cultivars at your local nursery.
This extra-late variety offers the largest (2-1/2-inch) and whitest flower available in a daisy garden mum. It develops into an almost ball-shaped plant covered with bright white blooms over extra-dark green foliage.
The early blooms are an unbelievable neon-hot pink daisy with a bright yellow center disk.
A hard-to-find two-tone decorative flower that is a dark red-bronze in the center with golden-yellow outer petals. This extra-late cultivar shows none of the discoloration of aging petals seen in some older varieties.
This garden gem is coated in unique pink-and-purple curling flowers. The mum flower's light color adds a delicate and slightly summery touch to the fall landscape. These mums are a show all on their own, but try planting with other varieties for a breathtaking floral effect.
This extra-late mum blooms through late October and was bred for excellent flower form, flower color, color retention, and growth habit. The bright lavender-rose flowers combine beautifully with 'Erica', 'Ingrid', and 'Taffy'.
Another bright "wow" of a plant, these decorative blooms are rich orange with a darker orange center. They have awesome color and a full spreading plant habit.
An unusual pastel peach-coral color, the early decorative flowers are more fully petaled and retain their color longer than others of this hue.