How to Grow Crocuses: Complete UK Care Guide

Crocuses are compact, early-flowering corms that bring welcome colour to UK gardens from January to March, often pushing through snow or frost. Easy to grow in sun and well-drained soil, they are ideal for naturalising in lawns, rockeries and pots, and provide an essential early nectar source for bees emerging from winter dormancy.

Attribute	Detail
Botanical name	Crocus spp. and cultivars
Plant type	Hardy corm
Height & spread	8-12cm height; spread 5cm
Hardiness	RHS H6 (fully hardy)
Position	Full sun
Soil	Free-draining soil; tolerates poor, dry soils
Flowering period	January to March (spring types); September-October (autumn types)
Planting depth	8-10cm
Difficulty	Easy

Choosing varieties

Crocus varieties range from large Dutch hybrids ideal for bold drifts to smaller species crocuses that flower earlier and suit naturalising in short grass.

Variety	Type	Flower colour	Flowering time
'Pickwick'	Dutch hybrid	Lilac striped purple	March
Crocus tommasinianus 'Ruby Giant'	Species	Deep purple	February
'Jeanne d'Arc'	Dutch hybrid	White	March
Crocus chrysanthus 'Cream Beauty'	Species	Cream yellow	February
'Flower Record'	Dutch hybrid	Rich purple	March
Crocus sativus	Autumn-flowering (saffron)	Lilac	October

When and where to plant

Plant spring-flowering crocus corms in early autumn, ideally September to October, choosing a sunny position with sharply drained soil. Autumn-flowering species such as Crocus sativus should be planted a little earlier, in July or August. Crocuses suit rockeries, border edges, gravel gardens and naturalised lawns; for further seasonal planting inspiration see our seasonal planting guide.

How to plant

1. Choose firm, plump corms and discard any that are soft or showing mould.
2. Plant at a depth of around 8-10cm, slightly deeper on light or sandy soils.
3. Space corms 5-8cm apart, or scatter by hand for a naturalistic drift and plant where they land.
4. Place corms with the pointed growth tip facing upwards where visible.
5. Firm soil back over gently and water in if the ground is dry.

Naturalising in grass

Crocuses are among the best bulbs for naturalising in lawns, creating a carpet of early colour before the grass needs regular cutting. Scatter corms over the area and plant them where they fall using a bulb planter for an informal look. It's essential to leave the foliage to die back naturally for around six weeks after flowering before mowing, so plan your first cut accordingly; if you need a machine that copes well with early-season growth, see our lawn mower guide.

Aftercare and feeding

Crocuses need very little aftercare. A light application of a low-nitrogen, potassium-rich feed after flowering can help build up corms for the following year, particularly in grass where nutrients are more limited. Watering is rarely necessary except during unusually dry fine spells.

What to do after flowering

As with other spring bulbs, resist cutting back or tying up crocus foliage after flowering. The grass-like leaves continue photosynthesising and feeding the corm for several weeks, so leave them undisturbed until they yellow and die back naturally, usually by early summer.

Lifting, storing and dividing

Crocus corms multiply readily and rarely need lifting. If flowering becomes sparse due to overcrowding, lift clumps once foliage has died back in early summer, gently separate the small cormlets, and either replant immediately at the correct spacing or store in a cool, dry, airy place until autumn.

Protecting corms from squirrels

Squirrels and mice can dig up and eat newly planted crocus corms, particularly in autumn before shoots appear. Cover planted areas with chicken wire pegged firmly to the soil surface until growth is visible, or plant corms a little deeper than usual. Interplanting with daffodils, which rodents avoid, can also help deter digging in mixed plantings.

Common problems

Problem	Symptom	Fix
Squirrel or mouse damage	Corms dug up after planting	Cover with wire mesh until shoots emerge
Corm rot	Soft, discoloured corms, no growth	Improve drainage; avoid waterlogged soil
Bird damage	Flowers pecked apart, especially by sparrows	Use humane deterrents such as netting in badly affected areas
Sparse flowering	Fewer flowers over time	Lift and divide congested corms

Month-by-month care calendar

Month	Task
July-August	Plant autumn-flowering species such as Crocus sativus
September-October	Plant spring-flowering corms; protect from squirrels
January-March	Flowering period; enjoy early nectar for pollinators
April-May	Leave foliage to die back naturally
June	Lift and divide congested clumps if needed