After planting tulips in the fall, cover them with 3 to 5 inches of shredded leaves, dried grass clippings or straw. This mulch regulates moisture and temperatures, allowing the bulbs to produce strong, healthy roots. Push back the mulch in the spring as new growth emerges, but keep it close at hand. Cover the tulips if a severe frost threatens.
Your choice of planting location influences how well tulips are able to withstand frosts. Plant tulips in a sunny, sloped location protected from fierce winds and frost. Avoid low-lying, open areas where frost pockets may collect. Tulips planted here are more likely to sustain damage due to cold temperatures.
Good care ensures hardy tulips and reduces the need for frost protection. Buy bulbs in the fall from a reputable grower. Choose bulbs that are heavy for their size, with no soft spots, odor or signs of decay. Amend the soil with compost and 1 lb. of 5-10-10 fertilizer per 100 square feet of soil. Water the bulbs thoroughly after planting. Water two or three more times during the fall if the weather is dry. Watering and fertilizing the bulbs encourages strong roots, which will create hardy, healthy plants capable of withstanding frosts.
Tulip plants may withstand frosts, but any blooms will likely wither. Cut them if a frost is predicted and bring them indoors instead. Add 1 tsp. commercial cut flower powder to a vase of water or add a few drops of chlorine bleach. Store the tulips out of direct sunlight and away from heating vents and change the water daily.