CONTROLLING PESTS

For centuries, certain herbs have been known to repel pests. In the past, strewing herbs- those known to repel ants, flies, fleas and mice - were spread inside the house to keep infestations at bay. Although today it is uncommon to strew herbs on floors, it is common to place bundles of dried herbs in drawers and in closets to repel moths and herb containers near entrances to repel ants and flies.

While some herbs serve as pest repellents, some pests must be repelled from herbs. Infestations are a fact of gardening life. Identifying problems early will keep them to a minimum. Routinely inspect leaves and flowers. Twisted or stunted growth, deformed leaves, leaf spots, wilting or root rot are probably caused by fungi or bacteria. Yellow leaves or misshapen growing tops might be due to sap-sucking insects such as aphids, spider mites, whiteflies, thrips or scale. Aphids and scale produce a sticky dew that attracts ants. Leaf chewing beetles and larva consume leaves or make tunnels within the leaves.

Good gardening practices prevent most problems. Maintain open space between plants to inhibit insects from spreading. Put copper sheeting around garden beds to deter snails and slugs. From time to time, use a forceful spray of water to dislodge insects and larvae. Pick off larger pests and destroy them. Wash your hands and tools after dealing with an infested plant to reduce spread. Clean up plant debris to limit opportunities for nesting. Do not compost infested or diseased debris.

Of problems are out of control, take measures immediately. Choose natural plant insecticides such as pyrethrum and rotenone for their relative safety for the user and environment. If you must use chemicals, follow label directions carefully.

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