This will eliminate any air pockets that might be around the roots. Wait for the water to drain. Then, finish filling the hole. With any remaining soil, make a rim around the edge of the hole so that water will funnel towards the roots. Water new plants regularly at first, applying about 1 inch per week.
Drip irrigation is best to water slowly, thoroughly, and deeply without wetting foliage.
Water less in winter. The best time to apply is just before the pests normally appear. Use this preventative strategy to help prevent damage on roses and other flowers. Mulch well with bark, compost, or pine straw.