By Polytunnel
Devon,
United Kingdom 
I have noticed a lot of greenfly on my lettuce is it ok to use detergent mixed with water to eliminate this.
polytunnel
17 Jun, 2011
Hi Polytunnel unless you use an eco friendly washing up liquid like Ecover not a good idea to use on your plants. Definitely not detergent, remember you are going to be eating those lettuce! Otherwise you will need to go to the GC and buy a spray that can be used on food crops.
17 Jun, 2011