Is there an alternative to sulphur candles?
Q What can I use in place of sulphur candles to clean up my greenhouse? Leslie Iddon, by email
A Sulphur candles have been withdrawn along with other products based on sulphur that were approved as fungicides. For simply cleaning and sterilising the greenhouse you could opt for Jeyes Fluid, or any of the range of products sold for such purposes, such as Citrox. You could follow this up with one of a number of products available as fumigants for insect control. Pest-Stop Biofume Greenhouse Fumigator is based on garlic extract, while Deadfast Greenhouse Smoke Generator and Vitax Greenhouse Fumigator are both based on permethrin.
It’s a good time of year to clean the greenhouse inside and out