Night temperatures should not dip below 60. Plants exposed to 50-degree temperatures will drop their leaves. And remember to avoid drafts and heating registers. Plant remaining daffodils in sun or semishade in well-draining, organic soil with 2 inches of soil above the bulb shoulder. While tulips need several hours of sun for best blooms, a little light shade may encourage longer stems.
Tulips perform best in a sandy, organically enriched soil.
Work the soil well, adding bone meal or superphosphate. Single bulbs are lost in the landscape. Plant the bulbs with the pointed end up and the flat side of the bulb facing the front of the bed. Cover the bulbs with three to four inches of soil, then water. Water as the tulips grow.