I got a rose plant around a month back and it had been doing very well. It is planted in a 12 inch pot with miraclegro potting mix. I have been watering the plant daily either in the morning or in the evening.
I live in Peoria, Arizona, US. Recently the leaves started turning black, then yellow and started withering. Not sure if it is due to over- watering or salt content or heat. Somebody please advise.