The illustrated growing guide
Crocus
Crocus spp.
Family Iridaceae
Est. zones 3-8
Plant 100 in the lawn in October (they're cheap) and February answers with purple confetti before winter's even done. Tommasinianus types are the ones squirrels skip.
Full Sun
Low water
Spring ephemeral growth
Attracts beesI
Overview
Will crocus suit your garden, and what goes wrong.
Will it thrive where you are?
Enter your ZIP — we look up your USDA hardiness zone (2023 map) and check it against what crocus actually needs.
Hardy inZones 3-8Crocus at a glance
Common crocus problems
- Squirrels dig corms (plant with a wire mat or in lawn where digging shows)
- Corm Rot
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Growing
Light, water, soil, propagation and the season’s jobs.
How to grow crocus: light, water & soil
How to plant & propagate crocus
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The year
What crocus asks for, month by month.
The crocus year, month by month
BloomWhat each band means
- Bloom — flowers open — pollinators working, frost on blossoms is the danger.
The crocus year as text
- Jan quiet month
- Feb bloom
- Mar bloom
- Apr quiet month
- May quiet month
- Jun quiet month
- Jul quiet month
- Aug quiet month
- Sep quiet month
- Oct quiet month
- Nov quiet month
- Dec quiet month
These are the species' typical months — expect them a few weeks earlier in warm zones and later in cold ones. Watch the plant, not just the calendar.
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Ecology & uses
What it does for the garden, and what it is grown for.
Crocus in the garden system
- Nectary/insectary
What crocus is grown for
! Some parts toxic — see notesMildly toxic to pets (NOT the saffron crocus — that's fall-blooming C. sativus)
Edibility, identification, and traditional-use notes here are general reference — not medical or veterinary advice, and not a claim that any plant treats or prevents anything. Medicinal ratings record how strongly a plant features in herbal tradition, nothing more. Never eat or dose a plant you have not positively identified. More on how to use this library.
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Cultivars
Named varieties of crocus, ruled as a catalogue.
Best crocus varieties & cultivars
'Ruby Giant' (tommies — squirrel-resistant!); 'Pickwick' (striped); Snow crocus 'Cream Beauty'; C. sativus (real saffron, fall)
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Sources & plant ID
Where the care distinctions come from, and how the plant is filed.
Research basis
Sources behind this profile
No extension citations are attached to crocusyet. The care figures below come from the library's own catalogue rather than a traced primary source.
Plant ID
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Where to buy
Third-party nurseries — not Story Thyme Farms.
Third-party nurseries, not Story Thyme Farms. Prices are theirs.
Story Thyme Farms may earn a small commission from these links, at no cost to you — it never changes what we recommend.
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Questions
Crocus questions, answered straight.
Is crocus safe for kids and pets?
With care. Mildly toxic to pets (NOT the saffron crocus — that's fall-blooming C. sativus) Site it accordingly if children or pets roam the garden. This is general reference, not medical or veterinary advice — call a vet or poison control if something has actually been eaten.
How do you propagate crocus?
Offsets, division, or bulbils.
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Elsewhere
Where crocus sits in the library.
Sunflower
Zinnia
Peony
Daylily