Gardening Know How -

Greenfly Information: Greenfly Aphid Control In The Garden

What are greenflies? Greenflies are simply another name for aphids [1]– tiny pests that wreak havoc in gardens and farms around the world. If you’re from the United States, you probably refer to the tiny monsters as aphids, while gardeners across the pond know them as greenflies, blackflies or whiteflies, depending on the species.

Greenfly Information

Now that we’ve sorted out the difference between greenflies and aphids, (there really is no difference), let’s consider a few aphids and greenfly facts.

In some areas of the world, greenflies, or aphids, are known as plant lice, which is an appropriate name for the tiny bugs that gather en masse on leaf joints or the underside of leaves. The eggs usually hatch in early spring and immediately get busy sucking the sap from tender, new growth. As the weather gets warmer and the greenflies sprout wings, they are mobile and able to travel to new plants.

What do greenflies do to plants? If they aren’t controlled, they distort the appearance of the plant and can considerably stunt plant growth and development. Although they are rarely deadly, they can seriously weaken the plant if left uncontrolled.

Ants and aphids [2] have a symbiotic relationship in which ants gobble up the sweet sap, or honeydew [3], that aphids leave behind. In turn, the ants ferociously protect the aphids from predatory insects. In other words, ants actually “farm” the aphids so they can dine on the honeydew. An important aspect of aphid greenfly control involves monitoring and controlling the ant population in your garden [4].

The sticky honeydew also attracts sooty mold [5].

Greenfly Aphid Control

Ladybugs [6], hoverflies [7]and other beneficial insects help keep greenfly aphids under control. If you don’t notice these good guys in your yard, plant a few plants that they enjoy, such as:

Regular application of insecticidal soap [13] or neem oil [14] is also an effective greenfly aphid control with little risk to beneficial insects. However, don’t spray plants when good bugs are present. Avoid pesticides, which kill beneficial insects and make aphids and other pests more resistant.

Article printed from Gardening Know How:

URL to article:

URLs in this post:

[1] aphids:

[2] Ants and aphids:

[3] honeydew:

[4] controlling the ant population in your garden:

[5] sooty mold:

[6] Ladybugs:

[7] hoverflies:

[8] Yarrow:

[9] Dill:

[10] Fennel:

[11] Chives:

[12] Marigolds:

[13] insecticidal soap:

[14] neem oil:

Have any questions about this topic? Visit us at to ask your questions and get friendly answers from gardening experts.

You can also find us at:
'Like' us on Facebook:
Follow us on Twitter: - @gardenknowhow
Follow us on Pinterest:

Copyright © 2019 Gardening Know How. All rights reserved.