Annuals provide no-guilt bouquets because cutting the flowers makes the plant produce more. Regularly deadhead (pinch or clip off) blossoms that have faded to prevent the plants from forming seed, which weakens the plant. Annuals live on an accelerated schedule, so they need an abundant and uninterrupted flow of resources. For seedlings, keep the soil fairly moist for the first few days after planting. Then water thoroughly once a week (if you haven't had rain) or when the soil is dry two inches deep. Frequently use a balanced granular fertilizer such as Plant-tone (5-3-3) or a water-soluble fertilizer such as Miracle Gro (15-30-15). Bear in mind, young transplants don't need much fertilizer.