What are Aphids?

Aphids are small, sap-sucking insects that attack an array of plants. They vary in colour from bright green to black and are generally between two and three millimeters in size. They often congregate in large numbers and are voracious feeders, quickly damaging entire garden or houseplant varieties.

Signs of an Aphid Infestation

A common sign of an infestation is wilted, yellowed leaves due to aphids drawing sap from plant material which causes the plant’s nutrients to be depleted. This is a common problem on both indoor and outdoor plants, with the most significant damage likely to be seen in the summer months where temperatures and humidity are higher. Other telltale signs include honeydew, which is a sticky substance excreted by the aphids that can lead to fungal diseases.

How to Control and Prevent an Aphid Infestation

There are a variety of methods to control and prevent an aphid infestation, depending on the severity of the infestation and the area in which the infestation is occurring.

For controlling aphids outside, horticultural oils or insecticidal soaps can help to reduce their numbers. This is best done in the early morning or evening when the temperature isn’t too hot and the plants are less likely to be damaged by the oil or soap. Another method is to use companion planting, where certain plants are placed close together in order to deter aphids, as aphids are naturally repelled by certain types of plants.

For controlling an aphid infestation indoors, a regular insecticidal spray can help to reduce their numbers. However, if the infestation is severe, it is best to remove the affected plants and dispose of them in an outdoor rubbish bin. Additionally, keeping the area clean and free of debris can help to prevent a future infestation.

Overall, aphids are a common problem for gardeners and houseplant owners and can quickly damage plants if left unchecked. In order to prevent and control an aphid infestation, it is important to always be vigilant and take the necessary steps to minimize their numbers.