For larger blooms, remove secondary buds below the lead bud on hybrid teas. For a more uniform bouquet possible, avoid wetting the foliage - use drip or soaker irrigation. Use a recommended fungicide if the mildew becomes a problem. Control aphids and thrips with a recommended insecticide. Fertilize roses at one half the normal rate.
Yellow leaves indicate iron deficiency-treat with iron chelates.
In June, apply one fourth cup of magnesium sulfate. Apply one fourth cup again at the end of August. Water deeply once a week or more often if necessary. Remove faded roses after bloom. Apply 3 to 4 inches of mulch to the rose beds and sprinkle a light application of nitrogen over the covering to hasten decomposition.