Although beeswax sulfur candles are better for the environment than pesticide foggers, they're just as harmful to your lungs and mucous membranes, so gloves, goggles and respirators are mandatory. Brand name(s)Scotts Pathclear (Pathclear Gun! is not affected as it does not contain artrazine - the replacement product Pathclear Ultra is based on approved active ingredients), Doff Total Path Weedkiller (the replacement product Doff Improved Total Path Weedkiller is based on approved active ingredients) The RHS is extremely concerned about the potential unintended effects of pesticides on bees, other pollinators and the wider environment. The RHS welcomes any move that increases our knowledge and understanding of the factors that may play a role in the decline of pollinators and other wildlife. In the past I have filled a pump spray with either Bleach / Armillatox / or Jeyes fluid and spray the greenhouse inside and out and leave it a few days until the smell disappears and it seems to clear everything away ( At least I never see anything afterwards but that's not to say I have killed everything.) Brand name(s) Many brands (Many of these have been replaced by other products that contain a different active ingredient but may be used for the same purposes)

Products have been grouped according to their use and then alphabetically by active ingredient. PecticidesI cleanse my greenhouse with Jeyes followed by a sulphur candle every year once the former plants have gone so I don't have to worry about the plants being killed off. I also have a Poly tunnel - I haven't had any issues with it from a bug point of view and I am wondering should I use Sulphur Candles in it? Brand name(s) Rose Clear 2 (Rose Clear 2 has been replaced by a new product Roseclear Ultra with an increased range of uses and different active ingredients) A.J. Andrews' work has appeared in Food and Wine, Fricote and "BBC Good Food." He lives in Europe where he bakes with wild yeast, milks goats for cheese and prepares for the Court of Master Sommeliers level II exam. Andrews received formal training at Le Cordon Bleu.

Weedkillers for gardeners (Adobe Acrobat pdf document outlining weedkillers available to gardeners) Set up your double boiler -- one stainless-steel saucepan nestled inside the other -- and place it on the stove. I filled the sprayer and covered the inside getting into all the little nooks and crannys then left it shut up for two days. Brand name(s) Murphy Mortegg (The only products now available for use as a winter wash are the plant oil-based Growing Success Winter Tree Wash and Vitax Winter Tree Wash) If you had something like botrytis affecting a well-used one I suppose it would provide a bit more peace of mind.Brand name(s) Dithane (This active ingredient has not been withdrawn but the product/s containing it are no longer being marketed) I'm little confused as to how safe it is to use a Sulphur Candle. I have frogs, newts etc. in my polytunnel and I don't want to deliberately kill them. Especially as the frogs will eat slugs etc. Brand name(s) Doff Sodium Chlorate Weedkiller, Gem Stop Weeds Ready-to-Use, Gem Stop Weeds Sodium Chlorate, DeadFast Sodium Chlorate Weedkiller, Vitax Sodium Chlorate Weedkiller

I have often bought a Sulphur Candle but they seem expensive. Mind you the price for the commonest one, 300g Deadfast, seems to vary from 3.99 at selections.com to 7.95 at TwoWests. Do you know of a cheap supplier? Alternatively can you still buy Flowers of Sulphur (where from?) and burn that somehow? I have found a diy blend of beeswax and Sulphur to make your own. Are there other smokes that are equally effective and economical? What do you think burning the sulphur gives you over washing down with Jeyes or my organic botanical disinfectant? The alternatives seem to be all permethrin based which would kill all crawling/flying insects in the greenhouse but not eggs or fungi - at least as far as I know. Since there isn't much flying or crawling around in it in February/early March it would seem to be a bit pointless.The retailers of garlic candles seem a bit reticent to explain how their product works, so I can only assume they use the fact that garlic itself is quite sulphur rich, so they probably work in a similar way to sulphur candles. That's really what I was trying to find out. I have three greenhouse books of various vintages and I have searched the RHS but the only place that sulphur smoking seems to be advised is on the sulphur candle tin! I guess the idea is gas will penetrate all the nooks and crannies better than a liquid will.