Tulip: How Much Cold It Needs and How Long It Lasts
Tulip needs 12 to 14 weeks of temperatures below 45°F before it will flower, and it thrives in USDA zones 3 through 8.
Striped Squill: How Much Cold It Needs and How Long It Lasts
Puschkinia, better known as striped squill, needs 12 to 15 weeks of temperatures below 45°F before it flowers, and it grows reliably in USDA zones 3…
Spanish Bluebell: How Much Cold It Needs and How Long It Lasts
Spanish bluebell needs 12-14 weeks below 45F to flower properly, grows in USDA zones 3-8, and blooms in late spring.
Snowdrop: How Much Cold It Needs and How Long It Lasts
Two numbers matter before you buy a single bulb: 12 to 15 weeks below 45°F, and USDA zones 3 through 7.
Siberian Squill: How Much Cold It Needs and How Long It Lasts
Siberian squill needs 12 to 15 weeks below 45°F to flower at all, and it’s hardy down through USDA zone 2, which makes it the toughest spring bulb sold…
Reticulated Iris: How Much Cold It Needs and How Long It Lasts
Reticulated iris needs 12 to 14 weeks below 45F to flower at all, and it survives outdoors in USDA zones 5 through 9.
Hyacinth: How Much Cold It Needs and How Long It Lasts
Two numbers decide whether hyacinths bloom at all: they need 12 to 14 weeks of temperatures below 45F, and they only thrive in USDA zones 4 through 8.
Grecian Windflower: How Much Cold It Needs and How Long It Lasts
Grecian Windflower needs 12 to 14 weeks of temperatures below 45F to bloom at all, and it’s hardy in USDA zones 5-9.
Grape Hyacinth: How Much Cold It Needs and How Long It Lasts
Grape hyacinth is one of the few spring bulbs where the number that matters most isn’t on the bag, it’s in the ground: 12 to 15 weeks of cold below 45°F…
Glory-of-the-Snow: How Much Cold It Needs and How Long It Lasts
Chionodoxa, better known as Glory-of-the-Snow, needs 12 to 15 weeks below 45°F to bloom properly and thrives in USDA zones 3 through 8.