High contrast version | Photographs | Using the site | Pruning | Diseases | Other websites |
Home page | Clematis people | Clematis registration | Cookies | About the site |
|
Symptoms & Conditions for disease development Botrytis is favoured by very humid conditions created where plants are growing closely together or in glasshouses or chambers where there is no air circulation. The lower leaves and stem bases are mostly affected and show a brown leaf spotting and tip burn from which arises a fluffy mycelium later followed by a mass of grey spores.
| |||
| |||
Avoid conditions that are favourable for the disease. Apply fungicides which specifically target Botrytis as general purpose fungicides are not effective against this disease. Products containing the following active ingredients which are effective against the disease can be separated into four chemical classes:
| |||
| |||
Text ©2007 Paul Margot |