How to Grow Crocus
Crocus At a Glance
Difficulty
Easy
Category
Flower
Sun Exposure
Full Sun
Frost Tolerance
Frost Hardy
Cold Hardiness
Survives to -34°C
Plant Family
Iridaceae
Growing Season
Cool Season
Plant Lifecycle
Perennial
How to Start It
★ Recommended for beginners
Plant crocus corms (small, flat bulbs) in fall, about 6 weeks before your first frost, while the soil is still easy to dig. Set them pointed side up, 8 cm deep and 8 cm apart, in sun or light shade, and water once. They are cheap, so plant them by the handful for a carpet of colour.
Crocuses are one of the very first flowers of spring, often poking through the last snow, and an important early meal for bees. Plant them once and they come back every year, slowly spreading into bigger patches.
When To Start
Crocus likes cool weather. Sow it in early spring, as soon as the ground can be worked.
We do not have exact sowing dates for this one yet.
When should you plant Crocus?
Your planting dates depend on your local climate. Sign up and add your location to unlock personalized dates.
Your Crocus Planting Window
Start planting
May 15, 2026
Last chance
Sep 10, 2026
Your Crocus Calendar
Set your location to turn these into exact dates and reminders.
Plant crocus corms 8 cm deep, pointed side up
45 days before your first frost· every year
Enjoy your crocuses and let the leaves yellow on their own
30 days before your last frost· every year· optional
Water your new crocus plants well while they settle in. Deep and slow is best.
About 1 days after you plant it
Hello from your crocus bed! The corms are making roots now, and shoots often wait until late winter.
About 30 days after you plant it
Crocus check! Leave the spot undisturbed so the corms can wake up and push through.
About 90 days after you plant it
The Journey Ahead
Crocus's Lifecycle
Seedling
Mature Plant
Seed Production
Step 1
Prepare Your Space
8 cm
Seeding Depth
8 cm
Plant Spacing
30 cm
Row Spacing
Vertical Growing
No.
Succession Planting
No.
Good Companions
Bad Companions
Step 2
Planting & Sprouting
Growing Tips
- 1Plant crocuses where they get full sun or light shade in early spring, such as under trees that leaf out later.
- 2They need soil that drains well, since the corms rot in soggy ground, so mix in compost if your soil is heavy.
- 3Water after planting in fall, then leave them alone, because spring melt gives them the water they need.
- 4Spread a little compost over the spot each fall to feed them.
- 5Squirrels like to dig up new corms, so lay chicken wire over the planting until spring.
- 6Crocus can upset a pet's stomach, and the look-alike autumn crocus is very poisonous, so keep pets from digging up the corms.
Seedling Phase
Step 3
Growth & Maturity
12 cm
Mature Height
8 cm
Mature Width
Pests to Watch For
Diseases to Watch For
Mature Plant
Step 4
Harvesting
When to Pick
Blooms late winter to early spring; one of the first nectar sources for bees
How to Harvest
- 1Crocuses are grown for their flowers, so simply enjoy them in early spring.
- 2After flowering, let the grassy leaves turn yellow on their own, because they feed the corm for next year.
- 3If they grow in a lawn, wait to mow until the leaves have turned yellow.
- 4Every few years, when clumps get crowded and flower less, dig them up after the leaves fade and replant the corms farther apart.
Step 5
Saving Seeds
Seed Production
Still have a question?
Ask your coach about your crocus.
This page covers what we thought to write down. Your crocus will do something it never mentions, and that is the day a coach beats a guide. Ask Coach Lumen one question right now, free, no account.
