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Containers: Changing With the Seasons

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Veronica Lorson Fowler

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Mums in Urn
Photo Credit: Sam Spiro/folio.com
Before fall frosts hit, replace warm-season annuals with mums and other fall flowers that do well despite cold nighttime temperatures.

Colorful containers can add all kinds of flavor to your landscape year-round, but too many gardeners only fill them for the summer. Sure, marigolds, petunias, impatiens and other tender plants offer all kinds of warm-weather color, but what about the rest of the year?

Consider changing out your pots each season for beautiful displays every month of the year. (This is especially nice to do with permanent containers like window boxes and built-in planters.)

Here’s how to have beautiful, full containers and planters, no matter the season:

Fall. While most of your neighbors are storing their containers in the garage for the winter, you can be filling yours with mums, ornamental cabbages and kale, as well as other fall-blooming plants. If you can find them in your garden center, pansies are a good choice, too – they’ll bloom into the winter in mild-winter climates (USDA hardiness Zone 6 and warmer).

Fall is also the perfect time to get creative and tuck in cut branches of shrubs and trees that have beautiful fall color, berries or showy grass seed heads for additional interest. Just push the cut ends into a container’s soil, much in the way you would with a flower arrangement in a large vase. If autumn weather is reliably below 50 degrees F, snip long-lasting bits of perennials like tall sedums, and insert their cut ends into the soil, too. Or tuck tiny pumpkins, pinecones, Indian corn, gourds or other adornments in and around your potted plants. These cold-hardy, seasonal plantings should last you a few months until the heart of winter.

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Fir Branches
Photo Credit: Veronica Lorson Fowler
Dress up your winter containers by simply cutting branches from evergreen trees in the garden and tucking them into planters along with pinecones, berries and twinkling lights.

Winter. Snow, frost and ice will kill even the most cold-tolerant mums and other fall plants in containers. So after your region’s first heavy frost, pull out your damaged container plants for a seasonal change.

Evergreens are a natural for winter. You can usually find tiny ones at garden centers to use as centerpieces for a winter planting. While these beauties work well in containers all year in Zone 8 and warmer (and sometimes even in zones 6-7), they won’t last in cooler climates. They’ll look nice most of winter, but unless you try some good overwintering practices, they’re likely to brown and drop their needles come spring.

Tips
  • In USDA hardiness Zone 7 and colder, make sure any container you have outside during winter can endure repeated freezing and thawing. Wood or metal planters make better choices than ceramic or terra-cotta ones, which can shatter. Concrete and plastic planters are more shatter-resistant, but they can crack over time. High-quality fiberglass and resin pots are highly resistant to cracking, but the colors can fade as the seasons pass.
  • Ease the transition between seasons by tucking in some of the plants you’ll be using the following season a bit early. For example, plant a window box with pansies in March. Then sneak in some warm-season annuals in May (after the danger of frost has passed). That way, when warm weather hits and it’s time to remove the pansies, you’ll already have some established, colorful plants blooming for you.
Faqs
  • Q: Can I reuse potting soil from season to season?
    A: Yes, but you should change out the potting mix from year to year for best plant health. Use top-quality potting soil at the beginning of the year when you first pot up your plants. Then just replenish it with the same mix as needed each time you change plantings.
 
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