Several annuals, such as pansy, snapdragon, stocks, and calendula, will withstand a light frost and can be planted earlier for establishment during cool weather. The annuals industry has grown tremendously in the last several years. Other leading annuals are geraniums from cuttings and seed, petunia, marigolds and fibrous begonias. Planting Site Annuals grow best when the soil in the planting site has been prepared beforehand to receive the transplants. Planting sites should be well drained and in full sun or moderate shade, depending on plant species preference.
Plant roots fail to thrive in wet soil so drainage is very important.
Adjust the soil to a pH of 6.3 to 6.7 for best growth. Highly organic soils can range from pH 5.7 to 6.0. Amend the soil with high quality peat. This procedure will ensure rapid root expansion into surrounding soil. Water plants after planting to hasten root establishment.