A_Aphids_SSB_Aphids_SSAphids_SSA: White pine aphid  | B: Leafcurl ash aphid on green ash  | C: Giant conifer aphids on juniper

Aphids are soft, pear-shaped insects that have long legs and antennae with tube-like structures called “cornicles” that protrude out of the hind end of the body. This family of insects contains most plant virus vectors (around 200 known) such as the green peach aphid. They can appear in a range of colors including green, yellow, brown, red, or black. Their color will depend on the plants that they are currently feeding on but the most commonly recognized aphids are green or black. Some aphids secrete a waxy or woolly substance on their bodies that can make them easy to identify. Most aphid populations are particularly high in the spring and fall seasons.


Low to moderate numbers of leaf-feeding aphids are not usually damaging in gardens or on trees; however, large populations can turn leaves yellow and stunt shoots. Aphids can also produce large quantities of a sticky substance called honeydew, which turns black from opportunistic growth of a sooty mold fungus. Some aphid species inject a toxin into plants, which causes leaves to distort and inhibit their growth.

Info Source: Arborjet

Trees will recover from infestation and will be protected from this disease after the application of effective treatments offered by Joe’s Tree Care. We have certified arborists that can help you keep your trees healthy! Call us today! 512-215-1551