greenhouse suphur candles - oops!

HI all!
Just to let you all know of the mishap with my greenhouse sulphur candle in case any of you are thinking of using one!

I cleared my greenhouse of plants, lit the candle ( with a bit of effort as the little devil kept going out!) shut the door and left it for 12 hours.

All was well. Greenhouse refilled with my few plants and I went away happy

Two days later - my laurel hedge that is quite close to the greenhouse went yellow! Obviously the fumes came out at the eaves and have damaged the hedge quite badly. I am not sure if it will recover. The damage is only from about 4 ft upwards so i guess i could cut it back to there and keep my fingers crossed.

I have never used these before - used to use the smoke cones which did the job and were alot cheaper- this cost me a fiver.....never again!!

 

Is this what you would use to fumigate the greenhouse to kill the bugs before you put the next lot of plants with?

I did not know you could do this, all I did last year was clean and cleaned with a strong disinfectanct and then spreayed everything with the same disinfectant....let it all dry for 4/5 days and assumed I had done the job right.

Is there something else available other then these sulphur candles?

 

Hi and yes, you use them to get rid of all the nasties before refilling the greenhouse. Lethal stuff!
I dont think there is another product that you can use. I had whitefly in there and wanted to be sure that they had gone. Last year i sprayed it with jeyes fluid and that seemed to do the trick.

 

Dont you tend to find the actual pests are on the plants themselves.

So unless you throw away all your plants away as well, it seem to me, to be a bit of a pointless exercise.
No critism intended wilroda, just how I see it.

The smoke cones, where you leave all the plants in the greenhouse, seem to make more sence, but I never found them to work very well.
Could always find the odd spider crawling around in the roof afterwards, totally unharmed.

 

I am sure your laurel will survive. I've been trying to kill some off in my garden and even cutting them right down to ground level, drilling holes in and filling with diesel and weed-killer hasn't stopped them regenerating

 

I sprayed my few plants ( only about 6!) against whitefly or any other nasties when i removed them from the greenhouse Pete, so all should be well - except the Laurel!

 

I use Jeyes Fluid to clean out the g/house,some information on this site on how to use it,i'm going to try it on blackspot in the dormant season and another bonus it keeps the cats away,http://www.allcures.com/shared/product.asp?id=25914&desc=JEYES

 

I was tempted to use sulpher candle, but pleased I didn't after reading this! However I still have terrible whitefly problem caused by my abutioon which seems to be caviar and champagne to my whitefly.

 

Waco where have you been.

Until this thread I had though white fly had died out.

I've not seen any in about six years.:D

 

Looks like Pete has sent them all to you,Provado ultimate bug killer contains Imidacloprid a systemic insecticide,and should do the trick.

 

I have tried provado walnut, my thoughts are that I have developed a mutant strain that loves everything you give it to kill it. I know banana man keeps abutilon, wonder if he has same problem.

Pete - I have changed PC and had problems with my pass word which as sorted out yesterday, but I amafraid I have had CBA over sorting it all out untill now.

Not sure I can cope with this new format and it has already given me a severe personality complex as I have "No friends" whatever that is supposed to mean??

White fly is a BIG problem, spray appears to have worked then 2 days later I go into the greenhouse and there are just clouds of whitefly which drip their stuff all over - YUCK!

 

I used to have the same problem, but one winter they just disappeared and have not been seen since.

I dont overwinter any bedding plants these days and lantana, which was always a sucker for them, I overwinter dry, so all the leaves drop off.
I have abutilon, but its outside for as long as possible and only gets brought into the unheated garage if the weather is really cold.

 

For the white fly you could also try a biological nematode treatment, personally id just spray with systemic as Walnut mentions.

Comercially they use nicotine shreds for fumigation..... nasty stuff!

 

Waco alterate your spraying with a spray containing bifenthrin (Scotts Bug Clear Gun, Bayer Sprayday Greenfly Killer Plus, Doff All-In-One Garden Pest Killer) like you say they can become resistant to one spray,you can use a parasitic wasp called encarsia but it's a bit cool for it to work effectively. Check out your friends list.
Pete you say you take your Abutilon inside if it gets really cold I leave mine outside all winter (have done for the last 3years ) its in open ground and carries on flowering right up until christmas (never had whitefly on it touch wood)

 

Thanks all, I have just been out to green house and read labels and actually feel a right old nit wit! Labels say whitefly resistant strains are now common and the products I have used are unlikely to be effective - whish that had been pointed out to me before I bought the stuff!!

The ingredients are not listed, but I have used Provado ultimate bug killer, "Growing Success" Greenhouse Whitefly, and some VERY old nasty stuff of my farthers called Symbol 2 which contains pirimiphos - methyl.

The white fly are even on my brugmansias that have been outside all summer!

I know abution can be kept outside, but I lost one that was kept at our holiday cottage in an unheated conservatory. We are in quite a frost pocket, I have already had my dahlias frosted this year. I have two abutilon, a varigated one which took it very hard when infeasted, all the leaves dropped off, but now recovered. the other is "Kentish bell" which is actually planted into the ground in the greenhouse, but I am seriously considering digging it up so I can bring it out in the summer, trouble is - what do I do about support? it covers the whole back wall of the place and is so beautifull. In a poor summer like this we have sat in the greenouse surrounded by fantastic flowers and pretended that we were actually having a summer!!

I will keep posting re whitefly, I will get the wretched things in the end!

sorry I have rabbited on a bit now.