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Sooty mould

Symptoms

Black or greyish-green mould spreads across sticky honeydew deposited on pepper plants by aphids

Find it on: peppers, indoor and greenhouse plants
Time to act: spring, summer, autumn, winter

Overview

Sap-sucking aphids excrete honeydew, sometimes seen as a string or web of stickiness. This can drip down on to lower leaves and on to other plants. A dark or grey-green mould then spreads across the honeydew. It's unsightly and prevents light and air from reaching the leaves.


Solution

Black or greyish-green mould spreads across sticky honeydew deposited on pepper plants by aphids

Organic

There's no control for sooty mould, but you can control the aphids. Outside, natural predators such as birds and ladybirds are your best allies. Ladybirds can be bought as a biological control, and you can also buy ladybird houses to encourage these helpful creatures to take up residence in your garden. They need time to tackle the problem, so don't expect them to hoover up the aphids overnight. Small clusters of aphids can be squished with your fingers or washed off with a strong jet of water.




Discuss this problem

Talkback: Sooty mould
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jogriff 24/11/2011 at 15:27

How do I wash them off with a jet of water without wetting the leaves of the plant (see other problems)? Is it a case of one solution or the other?

Sarraceniac 24/11/2011 at 15:28

Don't quite understand Jogriff's comment. what is wrong with wet leaves occasionaly? My outdoor plants get wet everytime it rains and my greenhouse plants whenever I water them.

kevc 24/11/2011 at 15:29

hi

It is the first time Ive every tryed to grow anything in my garden I bought myself a greenhouse, everything is going great tomatoe onions,beetroot,and losts off other veg are doing well I know my gropes are going to be small as their are just in grow bags but when will I know when to pick then or pull them out off the grow bags
thanks kevc

kevc 24/11/2011 at 15:29

hi

Is it to late to try and grow flowers from seed in a green house and all so grow herds from seed

thanks kevc

kevc 24/11/2011 at 15:29

hi

It is the first time Ive every tryed to grow anything in my garden I bought myself a greenhouse, everything is going great tomatoe onions,beetroot,and losts off other veg are doing well I know my gropes are going to be small as their are just in grow bags but when will I know when to pick then or pull them out off the grow bags
thanks kevc