It has been about a month now since I planted my hydrangea's that i bought at a nursery. I was wondering how and when I should feed it? What types of fertilizers, compost are suitable? I tested my soil and it seems to be low on nitrogen,potassium, adequate in phosphor and slightly acidic-neutral. I have attempted to acidify my soil with aluminum sulfate, but haven't had much luck lowering the pH. How should I apply fertilizer, compost, etc?
Also, I heard it's best not to water the plants everyday, but it seems that my hydrangeas tend to go all wilty in the afternoon if I don't water it every other day. The weather has been very hot this week though, should I continue to Water it every other day instead of watering it every 4-5 days?
By the way most of my hydrangeas are macrophylla Nikko Blue.