University of Illinois Extension
Bruce Spangeberg

These articles are written to apply to the northeastern corner of Illinois. Problems and timing may not apply outside of this area.

Stateline Yard & Garden

Yard and Garden Calendar for June

June 5, 1997

June is recognized as the first month of summer, and is a busy time in the yard and garden. Maintenance of plantings is the focus of much of this activity.

For example, watering and weeding is very important for the vegetables, annual flowers, and other plantings of this spring. Plants need to get off to a good start, thus avoiding weed and drought stress problems is critical.

Start monitoring vegetable and fruit plantings for insect pests. Cucumber beetles often show up just as the cucumber plants emerge form the soil. Control them with carbaryl (Sevin) or rotenone; or cover plants with row cover fabric until they start blooming. On apples, be ready to start cover sprays to protect developing fruit from insect damage such as codling moth.

Monitor other plantings in the yard and garden for problems. Master Gardeners are available in University of Illinois Extension offices throughout northern Illinois to help identify plant problems and offer suggestions for managing those problems. Bring them a good representative sample of your problem and accurate information on the overall appearance of the plant and how it has been cared for.

Most pine trees can be pruned in June. Watch for the candles, or new growth on the ends of the branches, that are the key to pruning pines. Pinching back the new candles can help create a denser and more compact pine. Unpruned pines tend to have larger spaces between branch whorls. Prune back candles as soon as they have elongated.

Shrubs that are just completing blooming can also be pruned now. Lilacs are a good example. Prune out older, less productive stems to keep new growth coming on multistemmed shrubs. This helps keep the shrub producing large amounts of flowers.

Lawn care should taper off in June. If fertilizing lawns, be sure to use controlled-release or slow-release nitrogen fertilizer. It's best to wait if you have already put down significant amounts of nitrogen fertilizer this spring. Likewise, weed control efforts, such as for dandelions, should wait until early fall, especially if hot weather sets in. Mow lawns higher (near 3 inches) in preparation for the heat of summer.


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