I recently bought a pot a white margueritas (on the label it says bush variety). However, they are not doing too well. Firstly they were plagued with snails. Secondly they seem to be unwell and the flowers are dying off very quickly with no sign of reflowering. is there a reason for this. Also can the plants be divided after flowering or do i need to to take stem cuttings. Also can you tell me what the correct name is (doesnt tell me on the label). Any assistance would be appreciated.