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Perennial planting, care and maintenance

Set perennial plants in their permanent places so their roots are completely covered with prepared soil, but avoid burying the stem or crown. Place container-grown plants the same depth that they were grown; place dormant plants at the depth at which they grew the previous season. To encourage side root growth, make a planting hole twice as wide as deep. With bare-root perennials, spread the roots outward as well as downward. For container-grown plants, loosen encircled roots and shake some of the potting soil into the planting hole. Remember to crumble away the top edges of a peat pot to prevent water loss through wicking. Do not let roots dry out, especially during transplanting.

Water the plants thoroughly to force out any air pockets and to settle the soil. Mark and label the plantings. Mulch the bed surface with pine straw or bark to keep soil from drying, crusting, and overheating in the summer, and to prevent many weed seeds from germinating.

Care and Maintenance

If you do not mulch your plants, use shallow cultivation in the spring and early summer to break and aerate compacted soils. This also aids in water penetration and makes it easier to incorporate fertilizer. Summer cultivation can damage shallow roots and is more difficult because the plants will be larger. Early in the season, stake tall plants with wire stands or bamboo canes. Use care to avoid root damage.

Apply fertilizers sparingly to plants early in their growing season, after new growth begins to show. If plants are growing well, no additional fertilizer may be needed; otherwise, a second light feeding will be helpful several weeks into the season.

In the fall, cut the old plant stalks to the ground after the leaves have fallen and mulch to protect crowns and roots from the harsh extremes of our mild weather followed by sudden cold spells. Remove any winter annual weeds that may have germinated before applying mulch. Fall is also a good time to divide many plants that may be encroaching on one another.

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Publication Number: IS0204
Publication Number: p3121
Publication Number: P3099
Publication Number: P3115

News

Purple viola flowers grow in a container.
Filed Under: Flower Gardens November 20, 2017

The last two weeks, I’ve told you about two of my top three cool-season flowering bedding plants. Today, I’m going to complete the trifecta with another plant everyone should have in their landscape: the viola.

Violas may have smaller flowers than their cousin, the pansy, but they’re maybe even tougher and more tolerant of cold, winter weather than pansies. These plants are beautiful massed in landscape beds, and they can be great performers all the way to Easter.

A close-up of white and pink dianthus blooms.
Filed Under: Flower Gardens November 13, 2017

Even though the air is still warm in many parts of Mississippi, it’s time to plant annual winter color. Last week, I wrote about pansies being a great color choice. Another sure-fire pick is dianthus.

A close-up of a pink pansy with a dark maroon blotch in the center.
Filed Under: Flower Gardens November 6, 2017

These days, I have to wear my hoodie sweatshirts and long pants for anything below 60 degrees. But the falling temperatures also signal something great: racks and racks of great, cool-season color as pansies fill local garden centers.

A head of cabbage grows in the center of a gorgeous red cabbage plant.
Filed Under: Flower Gardens October 30, 2017

This year, I’m getting an early start on my ornamental kale and cabbage planting for the fall.

A couple of weeks ago, I found these plants being marketed in variety packs, so I picked up a selection of kale and cabbage. What an easy way to select plants for your landscape this weekend.

Confederate rose is an heirloom plant that blooms prolifically in late summer and fall.
Filed Under: Flower Gardens October 23, 2017
I have weekly favorite plants, as you may know, and one of my favorites started blooming in earnest over the last couple of weeks. The sheer number of flowers on the Confederate rose makes this plant a must-have in our Mississippi landscapes.

Confederate rose is sometimes called Cotton rose and Cotton rosemallow. Despite the references to cotton, this plant is actually a hibiscus that originated in Asia.

Watch

Pansy and Viola
Southern Gardening

Pansy and Viola

Sunday, November 19, 2017 - 2:00am
Toucan Canna
Southern Gardening

Toucan Canna

Sunday, November 12, 2017 - 2:45am
Fall Lantana
Southern Gardening

Fall Lantana

Sunday, November 5, 2017 - 2:45am
Naked Ladies
Southern Gardening

Naked Ladies

Sunday, October 29, 2017 - 2:00am
Killer Cool Color
Southern Gardening

Killer Cool Color

Sunday, October 15, 2017 - 2:00am

Listen

Tuesday, November 21, 2017 - 2:45am
Monday, November 20, 2017 - 2:45am
Friday, November 17, 2017 - 2:45am
Wednesday, November 15, 2017 - 2:45am
Monday, November 13, 2017 - 2:45am

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