Muhly grasses offer dazzling fall display

Published 5:00 am Tuesday, October 21, 2008

If the only grass you grow is the one you mow, you are missing out.

Muhly grasses native to the southern United States offer dazzling performances for the fall landscape. One of the most picturesque is commonly called Lindheimer’s muhly, or blue muhly.

The blue-gray-green color and fine leaf texture make this grass a winner, even if it never bloomed. But it does, sending up plumes on 4-foot-tall plants. The blossoms begin as a creamy pink that turns whiter and finishes tan.

No matter where you go in the country, it seems gardeners want more drought-tolerant plants; the Lindheimer’s muhly certainly falls in this category. It is generally considered cold hardy from zone 6-10. In Mississippi State University trials, we partnered it with Knock Out roses and Kathy Ann Brown Mexican bush sage. This makes quite a fall display.

Another terrific muhly choice is the Gulf Coast muhly, or pink muhly, known botanically as Muhlenbergia capillaris. This grass absolutely mesmerizes those who see its cotton candy-like blooms. A white variety called White Cloud looks like cumulus clouds 4 feet off the ground. Like the Lindheimer’s muhly, it too is cold hardy to zone 6.

Both pink and white muhly grasses reach about 4 feet tall and look at home in any kind of garden. Grow in beds with deep pink or red shrub roses. Place them in front of other grasses like purple fountain or black bamboo. Muhly grass is awesome with Clara Curtis or Country Girl chrysanthemums.

Group together

While specimen plantings are exceptional, try grouping three together for an especially showy partnership. All of these grasses look incredible when backlit by the sun. The kiss of dew in the morning can make pink or white muhly grass look like giant spiderwebs until they dry.

To grow these muhly grass selections, choose a site in full sun with fertile, organic-rich soil. Amend the soil as needed with 3 to 4 inches of organic matter like compost or humus. Till to a depth of 8 to 10 inches, and incorporate 2 pounds of a slow-release 12-6-6 fertilizer.

Dig the planting hole two to three times as wide as the root ball but no deeper. Plant the muhly grass at the same depth it is growing in the container, with the crown slightly above the soil profile. Space plants 24 to 36 inches apart, and apply a good layer of mulch after planting.

In late winter, cut the foliage back to about 12 inches tall, or slightly more for the Lindheimer’s muhly. Apply a light application of fertilizer when pruning and again in midsummer. A little supplemental water during prolonged dry periods in the summer will pay dividends with an even more impressive show in the fall. Clumps can be divided in early spring.

Jump on the grass bandwagon this fall. Muhly grasses are a great place to start. Plant some now, and your envious neighbors will probably accuse you of going to landscape design school.

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