Bulbs and bulblike plants, Perennials
Tulips vary considerably. Some are stately and formal, others dainty and whimsical; a few look decidedly bizarre. Bloom comes at some time from March to May, depending on the type.
Use larger tulips in colonies or masses, in company with low, spring-blooming plants. Use smaller, shorter types for close-up viewing—in rock gardens, near paths, in raised beds, or in patio insets.
Tulips are superb container plants; unusual kinds such as Rembrandt and Parrot are especially suited to this use.
Nearly all hybrid tulips and most species (wild) tulips need six weeks of temperatures below 45°F/7°C to initiate flower formation, and they aren’t bothered by summer drought. In mild climates, provide the necessary chill by refrigerating bulbs for 6 weeks (not near ripening fruit) before planting; then treat the plants as annuals.Tulipa kaufmanniana
Often called waterlily tulip, T. kaufmanniana is a very early bloomer with 3-in., creamy yellow flowers (marked red on petal backs) with dark yellow centers; the flowers open flat in sun. Stems are 6–8 in. high. Hybrids come in various colors, usually with flower centers in a contrasting color; many have mottled leaves like Greigii tulips.
Early-blooming T. fosteriana has the largest flowers—to 8 in. wide—of any tulip. ...
A good representative of the Triumph tulips, which grow to 20 in. tall. This one produces clear pink, ...
Grows to 20 in. tall and produces yellow flowers with green-striped reverse (that green is the mark of...