When do I plant bulbs?

Gertens carries a wide variety of both spring and autumn planted bulbs. Spring planted bulbs, such as gladioli and dahlias, are best started indoors in early April, and planted outside once the soil temperatures are above 55 F. Autumn planted bulbs, such as the classic tulips, crocus, and daffodils, are best planted after the soil cools in mid-late October to prevent the bulbs from rotting in the ground.