Sticky substance on leaves of Citrus sinensis 'Washington' - Knowledgebase Question

Sammamish, WA
Avatar for goodman115
Question by goodman115
March 26, 2006
I have a Citrus sinensis 'Washington' that is growing indoors in an 18

Answer from NGA
March 26, 2006
Stippling on the leaves and a sticky substance certainly sounds like the result of insect feeding. Aphids are fairly easy to spot; mites, whiteflies, thrips and scale insects are a little more difficult to detect. Since you've thoroughly inspected the plant and can find no signs of insect pests, the critters may be flying away or may be so tiny you can't see them with the naked eye. Whiteflies scatter when you touch the leaves or branches so look for tiny white specks; spider mites look like little specks of pepper and they generally leave tell-tale webbing where the leaves meet the stems. Inspect the undersides of the leaves with a magnifying glass to see if you can find these critters.

Without knowing which pest you're dealing with, it's difficult to suggest a control. I'd give the plant a periodic shower (tepid water, making sure to gently rub the undersides of the leaves to dislodge any insect pests) and continue watching for insect activity.

Best wishes with your citrus!

You must be signed in before you can post questions or answers. Click here to join!

« Return to the Garden Knowledgebase Homepage

Member Login:

( No account? Join now! )

Today's site banner is by Murky and is called "Ground Cover"

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.