This will most likely occur several weeks after active growth starts. Aphids are common on the terminal growth. Thrips will be a problem on the flower. If you have a vegetable garden, cucumber beetles may move in on your roses in mid-spring to early summer. Insect Problems Watch for insect problems this spring.
Lace bugs on azaleas and aphids or whiteflies on gardenias are common.
Also examine camellias, sasanquas and hollies for scale insects on the lower foliage. Control with Orthene, dormant oil, summer oil or horticultural soaps. Shrub Fertilization Spring flowering shrubs can be fertilized after flowering is completed. Apply about 1 pound of nitrogen per 1,000 square feet of landscape bed area. Spread the fertilizer uniformly.