Ants Ants are a particular nuisance. They do not cause harm to plants but enter homes and are sometimes difficult to remove. Ants can appear at any time of year but are most active in the summer and after the first rains in the fall. Seal all food and keep counters wiped down. Aphids Aphids are very small insects that suck plant fluids and in large numbers cause leaf and flower damage.
Aphids are most active during the spring and fall when plant growth rates are high.
Look on the underside of leaves. Control ants, they protect and encourage aphids. Check transplants for infestations. Avoid high levels of nitrogen fertilizer. Beetles and Other Borers Borers are beetles that commonly attack trees that are suffering from water stress.