Skip to content

Bulbs

Spring and summer flower bulbs for US gardens, with planting depth, timing, and overwintering by zone.

Bulbs are the most forgiving flowers you can plant. Tuck them in at the right depth and season, and they store everything they need to bloom.

Timing splits into two groups. Spring bulbs like tulips and daffodils go in during fall. Summer bulbs like dahlias and lilies go in after the last frost. Your USDA zone sets the exact dates.

Grow with us

Get seasonal gardening tips straight to your inbox

One email a month. What to plant, what to prune, what to watch out for. No spam.

Unsubscribe any time. We never share your email. See our privacy policy.