Crocus bulbs are planted in fall so they can chill through winter and bloom at the first hint of spring. Plant them soon after arrival for the best results.
Unboxing
- Inspect on arrival. Bulbs should feel firm and plump; papery outer skins and loose flakes are normal.
- Store cool and dry. If you cannot plant right away, keep bulbs in a cool, dark, well-ventilated spot for up to a few weeks.
Planting
- Pick your spot. Choose full sun to partial shade with soil that drains freely; under deciduous trees works well since crocus blooms before the canopy leafs out.
- Plant in fall. Get bulbs in the ground about 6 weeks before the ground freezes, once soil temperatures cool.
- Set the depth. Dig 3-4 inches deep and place each bulb pointed side up, flat root plate down.
- Space for drifts. Set bulbs 2-4 inches apart and plant in clusters of 10 or more for a natural look.
- Backfill and water. Cover with soil, firm gently, and water once to settle everything in.
Watering
- Water at planting. One deep soaking after planting is usually all fall watering they need.
- Keep it light in spring. Normal spring rain is generally enough; water only during unusually dry stretches while foliage is green.
- Stay dry in summer. Dormant bulbs rot in soggy soil, so avoid heavy irrigation over the planting area in summer.
Feeding
- Feed in fall. Mix a bulb fertilizer or bone meal into the planting hole area at planting time.
- Top-dress in spring. Sprinkle a balanced granular fertilizer as shoots emerge to fuel next year's flowers.
After Bloom Care
- Leave the foliage. Let the grassy leaves yellow and die back naturally so bulbs recharge for next season.
- Mow late. If planted in lawn, hold off on the first mowing until crocus foliage has faded.
- Let them spread. Skip digging or dividing unless clumps get crowded after several years.
Container Growing
- Use a draining pot. Plant in well-draining potting mix in a container with drainage holes.
- Give them a chill. Potted bulbs still need 12-15 weeks of cold, so overwinter pots in an unheated garage or sheltered spot.