Posted: 01/06/2015 at 19:03
I say it whenever the opportunity arises Jo. and sometimes when it doesn't
A couple of weeks ago I walked around my garden with a friend. She remarked on the number of butterflies, several first sighting for her this year. I wondered why none in her garden. When we got to a shrub with aphids on it she told me what to spray it with. That gave me the answer.
The aphids have since been eaten/died/moved on. Shrub looks fine