Hi - I have been growing roses in my garden for several years now, and I still have problems getting good growth. I had soil analysis done this year, and the main nutrient missing from my red clay soil is nitrogen.
What is the best way to feed it to my roses? I have everything setup on drip, and I use a drip injector to feed a Miracle Grow type product a few times per season. I also put out about a cup of Milorganite, a cup of alfalfa pellets, a handful of balanced fertilizer and some compost around each rose during the season. So how do I safely increase the amount I am feeding without causing problems with salt buildup, etc.?
I have a bag of urea, and I also have chickens (hence chicken manure). I thought about using either of those amendments if possible. I don't compost because it's so dry here, I have never been able to get good results. I could put out some chicken manure in late fall, though?