After the end of August, continue watering but stop all fertilization. The plant needs a gradual entrance into dormancy – any new growth might be killed by early frost. This would be an added stress for even a healthy plant going into winter.
One of the most important jobs in the rose garden is to get a soil test, and fall is a great time to do it. Any corrections that need to be made will have all winter to work.
After the plant is well leafed out – around May 1 – use any balanced fertilizer such as 10-10-10, Fertilome, or Ortho Food at the manufacturer’s recommended rate. Osmocote and Once are timed release fertilizers that are applied one time in the Spring. Mills Mix is an all organic fertilizer that can be used in the Spring and Summer. Continue reading “Fertilizing Your Roses”
by Marty Reich, Master Rosarian
You can buy bare root roses, dormant plants sold and shipped without soil around their roots, and plant them in the early spring.