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Why Choose Annuals?

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Daniel Overcash

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Impatiens walleriana
Photo Credit: Felder Rushing
In the right garden setting, impatiens can make quite an impact.
I have a confession to make: I love annuals! Ever since I started working in a nursery, at age 14, annuals have had a special hold on me. There’s nothing like driving by a mass planting of petunias or vinca (Catharanthus roseus) – the sea of color just grabs your eye and captivates your attention.

Of course, annuals only last one season and you have to replant them every year (compared with perennials, which you plant once and only maintain from year to year). But I’ve always reasoned that you get the most color from annuals.

Depending on your climate, annuals may bloom from mid-April to late October – that’s six months of continuous color! On the flip side, you can choose almost any perennial, and you’ll be lucky if its bloom period will last for even one month. Just think of those amazing tulips that you see at the first sign of spring – they don’t last long. Or how about those beautiful flowering cherry trees? You may get a cherry blossom season as short as a couple of weeks. There’s no argument that perennials and ornamental trees have aesthetic value – it’s just that the extended bloom time of plant-them-every-year annuals deserve recognition for the colorful reward they offer you, your efforts and your garden!

Another feature of annuals is that many climates can enjoy year-round color. Pansies and ornamental cabbage and kale can survive frosty temperatures – even a light snow. (And there’s little that can brighten up a gloomy winter day better than the face of a happy pansy.)

For the best display of year-round color, even the proudest gardener must exert a degree of discipline to rip out healthy plants so that the next crop can get established. I use the following schedule and have had good results:

Warnings
  • While it’s nice to switch your annual selection each growing season, don’t rotate a flower bed between pansies and vinca (the annual bedding plant, not the vine). Both plants are susceptible to a disease called Thielaviopsis basicola (black root rot). Continuous cycling of these two annuals will allow the disease to thrive in the soil and ultimately kill your plants.
Tips
  • Plant tags won’t withstand the sun and rain, so don’t be tempted to stick them in the garden next to your plants. Instead, keep a journal of tags and sketch a map of your garden to easily locate the information you’re looking for.
  • Choose your annual varieties carefully. Many annuals have specific growth requirements. Read the plant tag or ask a garden center employee to find the right plants for your particular landscape situation.
Definitions
  • Annual: A plant that completes its life cycle in one year or season.
 
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