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Designing Perennial Plantings

While beds and pots of annuals may be replanted with ease, perennial plantings may live for many years and, therefore, require some planning. Flower beds are usually highly visible and should work well into the total landscape design. Otherwise, large areas of the landscape may be bare part of the year.

Many perennials, like annuals, are effective in mass when they are in bloom, but because of their seasonality, they are better viewed as small clumps of color and texture to accent other plants. You can often build a design to support or accent a favorite plant or group of plants. Use small evergreen shrubs, flowering trees, or such hard features as a fence, stone, bench, birdbath, or garden art to enhance a flower garden and "carry" it through all the seasons.

One of the easiest design "tricks" is to interplant groups of flowers that have contrasting shapes. For example, daylilies can have their large flowers set off well by the spikes of blue salvia and the round flowers of yarrow. The large leaves of canna and sword-like form of iris plants have a dramatic effect when used in groups among other less bold plants.

A natural way to begin planting perennials is to create islands of flowers in an open lawn, but because such beds are easily viewed from many sides, they often require high maintenance to keep them attractive.

Border plantings along a wall, fence, or hedge can soften the transition of landscape structures into the rest of the landscape or can create alleys of color. Rectangular beds lend themselves to a border planting where space is restrictive. When planting a perennial border against a hedge, fence, or wall, leave a little space between it and its backdrop. This allows for better air circulation, more light penetration, and ease of maintenance from the rear of the bed. Perennial borders often are 6 to 8 feet wide, allowing adequate space for at least a combination of six or more species, front to back, yielding a continual bloom.

To prevent turfgrass from growing into the perennial bed and becoming unsightly, use some form of broad edging or separating strip. Bricks laid flat, flagstone, bare ground, or a heavy layer of mulch such as wood chips or bark will help keep out grass.

Perennials may be grouped according to color, intermixing plants that bloom at different intervals for a continual display. Early bulbs may be planted with spring yarrow and iris, which usually fade before daylilies and canna begin their season of color. Fall sunflowers and ornamental grasses complete the season. Select plants that have not only attractive long-lived blooms, but those that have attractive foliage.

Plant height is a major consideration. In border plantings, the tallest plants are usually placed towards the rear to serve as a backdrop with a few moved forward to prevent monotony in the design. In island plantings, they are placed towards the center. Fall-blooming perennials are usually the tallest, making them the best backdrop or accent plants. Most of the middle height perennial plants are summer bloomers and may occupy the majority of the middle space. Spring-blooming perennials are primarily short plants; place them toward the front. Emerging foliage and flowers of later blooming plants can help hide the fading foliage of earlier flowers. Narrow beds with excessively tall plants are usually not effective displays. Whether for borders or island beds, keep the width of a planting about twice the height of the tallest plant.

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The Black and Bloom salvia is one of the first summer perennials to start blooming. This tough plant survives and thrives in hot summers. (Photo by MSU Extension/Gary Bachman)
Filed Under: Flower Gardens July 10, 2017

Home gardeners in Mississippi need colorful plants that hold up to the hot conditions we have every year. One group of plants that is a great choice for summer color is salvia, which includes both perennial and annual top performers.

The annual Salvia Splendens, as the name suggests, can't be beat. It is commonly called scarlet salvia, but it comes in a variety of bright colors.

Christine Coker, a horticulture specialist with Mississippi State University, began sowing the seeds for her career in elementary school as a 4-H member. Now, she helps put food on Mississippians’ tables with her research and Extension projects.
Filed Under: Commercial Horticulture, Women for Agriculture, Food, Flower Gardens, Vegetable Gardens July 5, 2017

BEAUMONT, Miss. -- For 16 years, Christine Coker has been doing what she loves: putting food on people's tables.

"In college, I really liked the study of plants, but I knew I wasn't going to be the world's greatest botanist," she said. "What I really wanted to do was feed people."

Moss rose is a great summer selection with blooms that resemble tiny roses and succulent foliage that withstands the heat. (Photo by MSU Extension/Gary Bachman)
Filed Under: Flower Gardens July 3, 2017

I really like to the flowering annual purslane in our hot summer landscapes. It's a vigorous, low-growing plant that forms a colorful carpet with succulent foliage.

But I plan to write about that wonderful plant in the future. Today, I want to extoll the virtues of one of its cousins: moss rose.

Moss rose has fleshy, succulent foliage that helps it hold up to the summer heat. The 1-inch-long, cylindrical foliage is bright green and arranged in clusters on the stems.

Colleen Wilkins, owner of Sunnyside in Natchez, gathers ideas while visiting the Southern Heritage Garden at the Vicksburg National Military Park on June 13, 2017. (Photo by MSU Extension Service/Bonnie Coblentz)
Filed Under: Agri-tourism, Lawn and Garden, Flower Gardens June 30, 2017

VICKSBURG, Miss. -- The Southern Gardener, Gary Bachman, would like to see Mississippi's historic bed and breakfast owners step up their game in the garden.

"What is your budget for your landscape and labor costs? Do you serve anything you grow and use your own flowers?" Bachman asked owners at a recent Mississippi State University Extension Service workshop. "I want to show you how, with minimal effort and minimal out-of-pocket expense, you can get a good return on investment from the landscape of your historic properties."

The Kong coleus has massive foliage and thrives in shady areas of the landscape. (Photo by MSU Extension/Gary Bachman)
Filed Under: Flower Gardens June 26, 2017

With summer officially here and hot and humid weather firmly in place, many gardeners -- myself included -- like to look at a pretty landscape, but don't really want to get out and do much work in that same landscape.

So selecting plants that look good without much work pique my interest. One plant that doesn't disappoint me is Sun coleus.

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