Texas Cooperative Extension,
Texas A&M University, College Station, Texas

March 2005

Garden Checklist for March, 2005

by Dr. William C. Welch, Landscape Horticulturist,
Texas Cooperative Extension

Kohl Rabi
Kohl Rabi

  • Prepare beds for planting warm-season flowers and vegetables.

  • For every 100 square feet of bed area, work in a 2- to 3-inch layer of organic material such as compost, pine bark, or sphagnum peat moss.

  • Select and order caladium tubers as well as geranium and coleus plants for late April and early May planting. Do not plant caladiums until soil temperature reaches 70 degrees F.

  • As camellia and azalea plants finish blooming, fertilize them with 3 pounds of azalea-camellia fertilizer per 100 square feet of bed area.

  • Check mulch on azalea and camellia plantings and add where needed. Consider using pine needles, pine bark, or similar organic materials.

  • Beware of closeout sales on bare-root trees and shrubs. The chance of survival is rather low on bare-rot plants this late in the season. Best bets for now are container-grown or balled-and-burlapped plants.

  • Remember that many trees and shrubs are damaged or killed each year by the careless application of weed killers, including those found in mixes of fertilizers and weed killers. Always read and follow label directions very carefully. Weeds in a lawn usually indicate a poor lawn-management program and can usually be crowded out in a healthy turf.

  • Start hanging baskets of petunias and other annuals for another dimension in landscape color.

  • Freeze-damaged beds of Asiatic jasmine ground cover should be sheared back just as new growth starts to encourage new growth from the base.

  • For early color in the landscape, try some of the following annuals as transplants: ageratums, cockscombs, fibrous rooted begonias, coreopsis, cosmos, cleomes, marigolds, nasturtiums, petunias, phlox, portulacas, salvias, sweet alyssums, sunflowers, and zinnias.

  • Divide existing clumps of fall-blooming perennials, such as chrysanthemums, autumn asters, Mexican marigold mint, and physostegia (obedient plant). Separate the clumps into individual plants and set them 8-10" apart in groupings of 5 or more. Be sure to prepare the bed area well by spading in 3-5" of organic material into the top 8-10" of soil. For longlasting fertility add 3-5 pounds of cottonseed meal or slow release fertilizer per 100#s of bed area.

This article appeared in the March 2005 on-line issue of Horticulture Update, edited by Dr. Douglas F. Welsh, and produced by Extension Horticulture, Texas Agricultural Extension Service, The Texas A&M University System, College Station, Texas.

Web page construction by Cynthia W. Mueller.