Some of the leaves on my serviceberry and hawthorn have an ugly black residue on them. When I looked more closely at the trees, I noticed some things that looked like little cotton balls here and ...

Question: What is causing this white webbing that looks like it’s oozing from old pruning cuts in apple trees? Answer: I had never seen anything like those images of white foamy icing rings around the ...

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Few insects strike greater fear into the hearts of orchard-owners than rosy apple aphids. These tiny bugs feed on the leaves of apple trees, draining them of nutrients. Their saliva, meanwhile, ...

The differences in how Washington apple growers battle pests in conventional and organic orchards may help Washington State University researchers decode the behavior of the woolly apple aphid.

Answer: Looking at the sample you brought in, the leaf curl on your peach tree branches is pretty extreme, and when I turned over and uncurled the leaves I found a ton of chubby green aphids hiding ...

Question: I think my peach tree has aphids, but how can I be sure? A: Green peach aphids are the most common aphids on peach trees. They are small and can be difficult to detect, but their damage is ...

Antoinette Paula Malan receives funding from Hortgro Science South Africa. Letodi Luki Mathulwe receives funding from HORTGRO Science South Africa. Nomakholwa Faith Stokwe works for Stellenbosch ...

Giant bark aphids, the elephants of the Aphidoidea world, have taken up residence in local oak trees, sucking up sap like college students on a spring-break bender. The aphid population has exploded ...