Tulip · last checked 2026-09-28
When to plant tulips: fall timing, bulb depth and bloom time
Tulips go in as bulbs in the fall and need a long spell of winter cold before they flower. Where winters are mild, the Extension pages we read handle them differently.
Each line below names the Extension service it comes from and links to their page. Where services give different timing, both are listed.
When to plant
- Colorado State University Extension says September and October are the months to plant, with late September preferred so bulbs root before the ground freezes; bulbs set out after October may not flower evenly. Fall-Planted Bulbs and Corms · checked 2026-09-28
- Illinois Extension says fall is the main season for hardy spring bulbs, and most can still go in right up until the ground freezes. Planting Bulbs (Flowers) · checked 2026-09-28
- Clemson Cooperative Extension says in South Carolina, hold off until the soil at planting depth stays under 60 °F; in coastal areas most bulbs go in during late December or early January. Spring-Flowering Bulbs (HGIC fact sheet) · checked 2026-09-28
Annual or perennial
- Clemson Cooperative Extension says in South Carolina tulips usually give a single season of color, so they are grown like annuals and pulled out after they bloom in spring. Spring-Flowering Bulbs (HGIC fact sheet) · checked 2026-09-28
Cold hardiness
- Clemson Cooperative Extension says most bulbs need 12 to 16 weeks of chilling to flower. In central and coastal South Carolina, keep tulip bulbs refrigerated from purchase until planting in November to late December. Spring-Flowering Bulbs (HGIC fact sheet) · checked 2026-09-28
Sun and soil
- Clemson Cooperative Extension says bulbs do best in full sun or part shade, and the flowers last longer where they are spared midday sun. Spring-Flowering Bulbs (HGIC fact sheet) · checked 2026-09-28
- Colorado State University Extension says bulbs left in one bed for more than a year need enough sun to rebuild strong bulbs, and the spot must drain well. Fall-Planted Bulbs and Corms · checked 2026-09-28
Watering
- Illinois Extension says from bud through bloom and early leaf growth, give about an inch of water a week whenever rain falls short. Planting Bulbs (Flowers) · checked 2026-09-28
Spacing
- Clemson Cooperative Extension says set tulip bulbs 6 to 8 inches deep and 4 to 6 inches apart. Spring-Flowering Bulbs (HGIC fact sheet) · checked 2026-09-28
- Illinois Extension says spring bulbs go two to three times as deep as they are tall, measured from the base, which puts large bulbs such as tulips about 8 inches down. Planting Bulbs (Flowers) · checked 2026-09-28
- Colorado State University Extension says large bulbs such as tulips can be spaced 4 to 6 inches apart. Fall-Planted Bulbs and Corms · checked 2026-09-28
When it blooms
- Clemson Cooperative Extension says Darwin hybrid tulips flower in mid-spring, and single late tulips are one of the groups that do well in warm climates. Spring-Flowering Bulbs (HGIC fact sheet) · checked 2026-09-28
Timing shifts with your local climate and the plant’s variety; your state’s Extension service has the final word. See how these pages are put together.
Other flowers: Daffodil, Hydrangea, Lavender, Mums (garden chrysanthemums), Peony, Rose.