sticky leaves on lemon tree

marina McShane asked 12 years ago

sticky, honey like substance on some leaves of lemon tree brought back indoors after being outside for summer. what is causing it. How can I treat it?

1 Answers

Gerry Daly Staff answered 5 years ago
The lemon plant has got either greenfly on its young shoots or scale insect on the backs of the leaves.

The latter are like small flattened pale-green scales attached to the leaf veins usually. They can be scraped off with a toothpick and wiggle a bit.

Take the lemon back outdoors on a callm day and thoroughly spray all the stems and foliage with a houseplant insecticide. Leave it for a few hours and take it indoors.