Posted: 01/04/2015 at 20:20
All Primulas are very prone to getting attacked.
I use a non-peat based compost. It does seem to slow them down a little.
Oh and I soaked, and I mean SOAKED, a lot of Geums in Provado at the recommended concentration and the grubs survived!
By soaking I mean the plants were stood up to their necks in a soaking tray of the stuff for 24 hours.