What Is This On The Stems Of My Hedera?

Question

Complete plant novice but can anyone tell me what this is on my hedera plant? Seems to come and go…..

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Answer 1

It looks like aphids, a common pest of ivy. They suck sap from the stems. Since you say they come and go, the beneficial insects, like ladybugs, must swoop in and eat them. If they come, then disappear, I wouldn't worry about them. If they seem to get worse and are affecting the health of the plant, you may want to remove them with a blast of water from the hose or use a product called Neem oil.

https://www.gardeningknowhow.com/plant-problems/pests/insects/homemade-aphid-control.htm