Aphids, or plant lice, feed on most vegetable crops, many houseplants and many ornamentals grown in New Hampshire, as well as numerous weeds and wild plants. With their awesome reproductive abilities aphids can build up in large numbers in a very short period of time.

The Colorado Potato Beetle (CPB) became a pest when settlers brought potatoes into the Rocky Mountain area, the native habitat of this beetle. The beetle preferred the potato to its host weed and has spread to become a serious pest throughout the US and Eastern Canada.The CPB feeds on the leaves and terminal growth of nightshade-family plants, such as potato, tomato, and eggplant. The potato, however, is its preferred plant. The above-ground destruction of potato plants can cause severe reduction in tuber size and overall yield.

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Slugs are slimy, soft-bodied, grayish, orange or brownish mottled mollusks - snails without shells. Slugs vary in length up to 4 inches and leave a slimy silver-colored trail wherever they travel. They can become serious pests in and around the home, garden, and greenhouse.