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Deadfast 300g Greenhouse Sulphur Candle
by William Sinclair Horticulture ltd

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Showing 1-10 of 22 questions
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I emptied the greenhouse before using it but I suppose it would kill any beasties in the trays etc, but do give it a good airing before putting plants back in as any lingering fumes will harm plants.
By scotsbonnet on 27 October 2014
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Having used these previously, I took out the wick, which is rolled, opened it up, semi folded it long ways, and using either finger or screwdriver pushed it back down into the sulphur, lit it, retired and watched the fumes start rising. Have found that opening up the wick usually works.
By beejay on 24 February 2015
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If it is harmful to you what do you think it would do to your toad.
By Big Bale on 10 March 2015
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YES . Then make sure the plants are clean before you put them back in the greenhouse . I use them every year and have had no problems with them . They are a greenhouse fumigator not a plant insectacide
By whitefly on 20 April 2015
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Yes,as long as the shed was reasonable airtight to ensure the fumes did not escape. However if the shed was full of essential items(junk) it would inhibit the penetration of the fumes, they may contaminate anything left in the she'd be careful what you do and if in any doubt empty the shed.
By R HODGE on 24 August 2014
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it will pretty much kill everything including you, instructions say completely empty the green house once the candle is lit close all windows and doors and leave it closed for at least 12 hours. if the white fly is on a plant, the candle would kill the plant as well as the whitefly, if the white fly is in the greenhous… see more it will pretty much kill everything including you, instructions say completely empty the green house once the candle is lit close all windows and doors and leave it closed for at least 12 hours. if the white fly is on a plant, the candle would kill the plant as well as the whitefly, if the white fly is in the greenhouse yes it will kill them. see less
By John H on 24 August 2014
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no
By Marion on 11 June 2014
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Don't really know, but I leave all my staging and shelving in the greenhouse when using these candles and they have plastic connectors. Been using Greenhouse Sulphur candles for years and plastic doesn't seem to be effected. I also cover strawberry plants that grow in greenhouse with plastic when using candle with no i… see more Don't really know, but I leave all my staging and shelving in the greenhouse when using these candles and they have plastic connectors. Been using Greenhouse Sulphur candles for years and plastic doesn't seem to be effected. I also cover strawberry plants that grow in greenhouse with plastic when using candle with no ill effects. see less
By katepuzzle on 05 May 2015
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Hi David, yes it will kill all pests but all plants have to be removed from greenhouse. If the whitefly are on your plants I would suggest spraying with an insecticide.
By Sally Jackman on 16 October 2014