Giant Crocus bulbs are planted in fall for bloom the following spring. Unpack them as soon as they arrive and let them breathe in a cool, dry spot until you're ready to plant.
Planting
- Time it right. Plant in fall, several weeks before the ground freezes, so roots can establish before winter.
- Pick a spot. Choose full sun to partial shade with well-drained soil; under deciduous trees works well since crocus bloom before leaves shade the ground.
- Set the depth. Dig 3-4 inches deep and place each bulb pointed side up, flat root plate down.
- Space for drifts. Set bulbs 3-4 inches apart, planting in clusters or scattering them for a natural, informal look.
- Backfill and water. Cover with soil, firm gently, and water once to settle the bed.
Watering
- After planting. Water once at planting, then leave them alone — fall and winter moisture is usually enough.
- During bloom. Water only if spring is unusually dry; crocus dislike soggy soil.
- After flowering. Let the soil dry as the bulbs go dormant for summer.
Feeding
- At planting. Mix a bulb fertilizer or bone meal into the planting hole.
- Each spring. Scatter a light application of balanced fertilizer as shoots emerge to fuel next year's flowers.
Aftercare
- Leave the foliage. Allow the grassy leaves to yellow naturally before cutting or mowing so bulbs can recharge.
- Mowing lawns. If planted in turf, hold off the first mow until crocus foliage has faded, usually 4-6 weeks after bloom.
- Containers. In pots, use well-drained mix and store the pot in a cold but protected spot over winter.