Southern Gardening

When gardeners want to add color to the landscape, they often reach for flowering annuals and perennials. While these colorful flowers always catch the eye, their selection is usually limited at this point of the summer.

Many gardeners never consider buying colorful foliage plants for anything but shady areas, but let me encourage you to reconsider their usefulness. These plants provide color, and you can still find good selections available in the local garden center that you can plant in the heat of summer.

Gaillardia is a native plant with few pests that can liven up the summer landscape anywhere in Mississippi with its bright, warm colors.

Gaillardia makes a fantastic addition to the summer garden. Many gardeners know Gaillardia as blanket flower, a name that came from the early settlers’ comparing the colors of the flowers to those of the blankets of Native Americans. Gaillardia is named in honor of French botanist Gaillard de Charentonneau.

A favorite flower with almost every Southern gardener is the black-eyed Susan, known botanically as rudbeckia. These plants produce an abundance of bright yellow flowers, each with a dark button-shaped cone in the center.

There are several species for gardeners to choose from. Rudbeckia hirta is a Mississippi native wildflower and is a staple plant in naturalized areas and meadows. Black-eyed Susans are also reliable garden and landscape performers for the butterfly garden.

If I told you about a flowering plant that likes full sun, needs little water and thrives on neglect, wouldn’t you want to go out and buy one? Or several?

A plant with these requirements sounds perfect for our hot Mississippi gardens. Agastache (pronounced ag-ah-STAK-ee) may just be that plant. More commonly known as licorice mint, Mexican hyssop or hummingbird mint, this member of the mint family has -- as you may have already guessed -- a pleasing licorice aroma.

When the heat makes gardeners want to stay indoors, it’s nice to have reliable, flowering plants that keep on looking good even when they don’t get a lot of attention.

The landscape performance of thread-leaf coreopsis, or Coreopsis verticillata, has made these plants outstanding choices for season-long color. And since it is an easy-to-grow, flowering perennial, beginner gardeners can have success almost immediately.

With the temperatures heating up, many landscapers and gardeners are looking for plants that can stand up to the Mississippi summer. Luckily, they don’t have to look any farther than hot summer lantana.

One of the most important factors in choosing flowering annuals is finding one that tolerates the hot Mississippi summers. Many annuals cannot maintain their color in the high temperatures, but the flowering Vinca is one that can.

Flowering Vinca is a versatile, full-sun plant. Known botanically as Catharanthus roseus, flowering Vinca originated in the hot and dry regions of southern Africa. It looks great mass-planted in the landscape or as a flowering ground cover.

As we enter the hot part of the summer, I’m reminded of how much the cold of winter and the heat of summer have in common.

Before you dismiss me as crazy, let me explain how summer and winter can be similar. Due to the current heat and humidity, most Mississippi gardeners – including me -- are spending time indoors trying to avoid sunburn and heat stroke. This gives us a lot of time to think about what to plant and new gardening projects to accomplish when cooler temperatures return.

To combat the dry conditions creating problems for home gardens and landscapes, many Mississippi gardeners need to water their plants a lot more than usual.

Generally, applying 1 to 1 1/2 inches of water per week using overhead sprinklers will leave the root zones of your plants moist enough to encourage optimum growth. This method of watering works for annuals and groundcovers, as well as perennials, shrubs, trees and lawns.

Hydrangeas are old-fashioned, rounded-form shrubs that put on flamboyant flower displays in the summer and fall. And every year, great new selections are introduced, so gardeners should watch out for these terrific new options.

The three types of hydrangea commonly found in Mississippi gardens are the French, the PeeGee and the Oakleaf.

French hydrangea has two types of flowers: mopheads and lacecaps. Mopheads resemble pom-poms and are big, round and showy. Lacecaps are fern-like.

For fresh summer recipes, nothing beats the taste of basil. Gardeners who want to grow basil for cooking can choose from a variety of colors, textures and flavors, making this herb a garden showpiece.

Basil is one of the easiest herbs to grow during the hot summer months. Most gardeners start with common, or sweet, basil, which comes in a wide range of leaf sizes and textures. Lettuce leaf basil has leaves as big as a man’s hand, and they are textured like lettuce. Try replacing traditional lettuce with a single leaf of it on a sandwich.

Summer’s heat has descended suddenly, so you may not be considering planting dianthus, a group of flowering plants that typically thrive during the cooler months of the year.

They are called by many names, but the common name pink really is a good description. Colors include pink and red, and there are also attractive white and lavender selections.

One of the latest trends in landscaping is to plant vegetables that provide ornamental interest, and peppers get my vote as one of the best choices.

The overall impact and adaptability of ornamental peppers was recognized in 2010, when Purple Flash pepper was named a Mississippi Medallion winner. Purple Flash ornamental pepper is one of the showiest peppers available today. The purple and white variegated leaves are visible from across the garden. Closer inspection reveals the leaves opening up white with purple ribs. As the leaves mature, they gradually become darker purple.

Gardeners interested in plants that can provide dependable color in the heat and drought of summer should consider adding the annual Zahara zinnia to the landscape. These flowers tolerate drought and are very resistant to the powdery mildew that plagues other zinnia varieties.

The selections in the Zahara series are well-branched and will grow up to 18 inches tall and wide. Its plentiful branches help support its abundant flowering. Their best performance is in the full sun with good fertility and cooler night temperatures.

Many gardeners believe they can remember every plant in the garden, and I’ll admit I’ve told myself I could do just that. But even gardeners with great memories will one day say, “Now, what is that plant?”

Plant tags, or garden markers, can be both useful and stylish. They can denote different gardeners or different parts of the garden. They can be plain or fancy. Use your imagination and creativity when creating yours.

Containers aren’t just for flowers; they can be used to grow fresh vegetables for aspiring gardeners who don’t have a traditional garden.

Container gardening isn’t just for flowers (top). Many vegetables can be grown in containers, such as these tomatoes in 3-gallon nursery containers.

A container is a great way to grow fresh produce in a small space. These mini bok choy (bottom) are thriving in window boxes. (Photos by Gary Bachman)

It takes a special plant to be named a Mississippi Medallion winner, and the Mississippi native Virginia sweetspire was one of the plants that earned that honor this year.

The Mississippi Nursery and Landscape Association names Medallion winners based on their superior performance in gardens and landscapes across the state. In response to renewed interest in native plants, the association has begun choosing a Mississippi native each year for one of its awards.

If you’re looking for a tough plant to keep right on blooming despite the heat of the summer, try gomphrena in your garden. This is one tough plant that likes really high temperatures. Sometimes called globe amaranth, legend has it that the original planting was at the gates of Hades.

If you’ve been reading this column and thinking I have a lot of favorite plants, you’re right. If you ask me for my favorites, my answer will depend on the season; some plants are more suitable than others at certain times of the year.

The new selections coming out each year make it even more difficult to have an absolute favorite flowering garden plant. But if there is one plant I have been the most impressed with over the last couple of years, it has to be Million Bells.

Early spring is a wonderful time, as the garden and landscape start to wake from the winter season. One of the many wonderful spring flowering plants is the Lenten rose, an old favorite that you may not often see.