When to spray lime sulphur and dormant oil?
I'm thinking of trying this for the first time this spring (I'm in east coast zone 5b and the temperature tonight is supposed to get down to minus 12 Celsius or plus 10F). Do I wait until after I spring prune before spraying? It seems a waste to spray and then prune off a lot of what I have just sprayed. On the other hand, can the material I have sprayed enter the pruning cuts and do damage? Also, do you put down your slow release fertilizer before spraying? I'm somewhat confused as you can see! I doubt I'll be pruning before mid-April but most of my roses have zero snow cover left right now. Thanks for your help.