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This article appeared in the June 2002 web issue of Horticulture Update,
edited by Dr. Douglas F. Welsh, and produced by Extension Horticulture,
Texas Cooperative Extension, The Texas A&M University System, College Station, Texas.
Garden Checklist for June, 2002
Dr. William C. Welch, Landscape Horticulturist
Texas A&M University, College Station, Texas
- Take a critical look at your landscape at the height of summer development. Make notes of any plants that need replacement, overgrown plants that need to be removed, better arrangements for your landscape, and possible activity areas that can be enjoyed by family members.
- Check for insects and diseases. Spider mites can be especially troublesome at this time.
- During the summer, water or soil moisture is essential for good plant production. Because continual watering is often costly and time consuming, it pays to conserve moisture around plants.
- The best way to conserve garden moisture is mulching. A good mulch not only retains valuable moisture needed for plant growth, but also improves overall gardening success.
- Mulches are usually applied 2- to 6- inches deep, depending on the material used. In general, the coarser the material, the deeper the mulch. For example, a 2-inch layer of cotton seed hulls will have about the same mulching effect as 6 inches of oat straw or 4 inches of coastal bermuda hay.
- Removing faded flowers from the plant before they set seed will keep them growing and producing more flowers. A light application of fertilizer every four to six weeks will also be helpful.
- Houseplants can be moved outside this month. Sink the pots in a cool, shaded garden bed to prevent them from drying out too quickly. Water pots, container plants and hanging baskets often. Monthly feeding with a balanced water soluble fertilizer encourages continued growth.
- Now is the time to plan for next spring. Consider digging and dividing any crowded spring bulbs. Once bulbs have matured and the foliage has turned brown, it is time to spade them up and thin out the stand. Crowded bulbs produce fewer and smaller blooms. They usually need thinning every three to four years. Replant immediately in prepared soils.
- June is the month to select day lily varieties as they reach their peak bloom.
- Fertilize rose beds every four to six weeks. Apply small amounts of fertilizer high in nitrogen immediately after a flush of bloom or every four to six weeks.
- There is still time to plant some of the colorful, heat-tolerant summer annuals. You can direct-seed zinnias and portulaca, and purchase periwinkle, salvia, marigold and purslane plants for transplanting. Be sure to water transplants adequately until roots become established.
- Pinch back chrysanthemums, Mexican marigold mint, marigold, autumn asters, salvias and other late summer and fall blooming annuals to prevent the necessity for staking.
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