I have 1 knockout rose bush that bloomed great the first blooming now 2nd blooms very small and no new growth seen on stems or branches
Certified GKH Gardening Expert
The first flush of blooms is usually the most magnificent, as the weather heats up the bloom smiles can get smaller and less in number. Then when the temps cool down again the number of bloom smiles and size will usually come back. You can do a few things to keep the bush strong and performing well though. Feed the rosebush with a granular organic or organic based rose food/fertilizer. Foliar feedings such as Miracle Gro are not enough to truly build the soils home and keep it healthy. I use a two gallon watering can to give my roses a little kick start each season, in the water I mix a good root stimulator and some of a product called Super Thrive. Water the rosebush with that mix two or three times when she needs watering, she will love it. Also if you can get some kelp meal, sprinkle a cup of that around the base of the rosebush, scratch into the soils lightly and then water it in. Rosebushes love kelp! Keep your rosebush(es) well watered and feed them with some organic food and she will do fine for you.