Posted: Sat May 24, 2008 7:36 am
Hello again. I searched every where for a pyrethrum based insecticide, local chemist just for the raw chemical etc. Sadly could not find one, well not one that was still on the shelves.
I went to my local nursury supplier (people round here either have a window box, or they have a house in the mountains with a small holding attached, there seems to be no half measures, often the more wealthy or established families have both).
Anyway, having stood in the queue of old ladies, I explained my problem, much nodding, apparently it is a terrible year for bitchos (bugs). Some put it down to the warm winter not kiloing enough of them off, which seems reasonable to me.
Pyrethrum based product was now at least a possibility, but no, all gone! So in an effort to preserve my herbs and toms I plumped for a product locally called Provado Jardin mad eby Bayer. The active ingredient is Imidacloprid, which apparently is a chlorate of nicotine.
Here's a link to wikipedia for any one interested http://en.wikipedia.org/wiki/Imidacloprid.
The maggot acctivity does seem to have diminished, and I am happy to note that this chemical has a very low toxitiy to most mamals. Also for the uber greens amongst us, I am with you all the way, I just have an appartment investing in bio-friendly wasps or other natural enemies is simply not an option, I don't get visited by bees ever that I have noticed, and the water table is definately not being affected by my contamination.
Imidacloprid breaks down pretty fast, I will keep you posted if it is actually as effective as I would like. The herbs look a bit taken a back by the experience, following previous good advice I let the pots dry out so that when I hit them with the pesticide it would get taken up by the plants quickly and would reach all parts of the soil, which is where the problem lies with these Fungus Gnats.
My outdoor plants don't seem to be affected, although high winds and rain have beaten my happy tomato vines to the ground, this weekend means working out a way to support them all....
I went to my local nursury supplier (people round here either have a window box, or they have a house in the mountains with a small holding attached, there seems to be no half measures, often the more wealthy or established families have both).
Anyway, having stood in the queue of old ladies, I explained my problem, much nodding, apparently it is a terrible year for bitchos (bugs). Some put it down to the warm winter not kiloing enough of them off, which seems reasonable to me.
Pyrethrum based product was now at least a possibility, but no, all gone! So in an effort to preserve my herbs and toms I plumped for a product locally called Provado Jardin mad eby Bayer. The active ingredient is Imidacloprid, which apparently is a chlorate of nicotine.
Here's a link to wikipedia for any one interested http://en.wikipedia.org/wiki/Imidacloprid.
The maggot acctivity does seem to have diminished, and I am happy to note that this chemical has a very low toxitiy to most mamals. Also for the uber greens amongst us, I am with you all the way, I just have an appartment investing in bio-friendly wasps or other natural enemies is simply not an option, I don't get visited by bees ever that I have noticed, and the water table is definately not being affected by my contamination.
Imidacloprid breaks down pretty fast, I will keep you posted if it is actually as effective as I would like. The herbs look a bit taken a back by the experience, following previous good advice I let the pots dry out so that when I hit them with the pesticide it would get taken up by the plants quickly and would reach all parts of the soil, which is where the problem lies with these Fungus Gnats.
My outdoor plants don't seem to be affected, although high winds and rain have beaten my happy tomato vines to the ground, this weekend means working out a way to support them all....