Crocus Growing Guide

Crocus vernus and Crocus tommasinianus

Crop Rotation Group

Miscellaneous ●

Soil

Average garden soil with excellent drainage.

Position

Full sun in late winter, partial shade in summer.

Frost tolerant

Excellent. Most crocuses are hardy to -32C (-25F).

Feeding

Mulch with compost in spring, when new growth appears. When given too much fertiliser, crocuses may form thick stands that do not bloom well.

Spacing

Single Plants: 10cm (3") each way (minimum)
Rows: 10cm (3") with 10cm (3") row gap (minimum)

Sow and Plant

Set out dormant bulbs from late summer to early winter, planting them 3in (8cm) deep. Spacing can be as close as 5cm(2in) between crocus bulbs, which look best when planted in groups of seven or more.
Our Garden Planner can produce a personalised calendar of when to sow, plant and harvest for your area.

Notes

Crocuses are considered harbingers of spring. The flowers close at night and on rainy days.

Harvesting

Seeds can be gathered and re-sown in early summer. Established clumps can be moved in the autumn, but are best left undisturbed.

Planting and Harvesting Calendar

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Pests which Affect Crocus

Aphids (General)

Slug

Snail