The illustrated growing guide
Spirea
Spiraea japonica / × vanhouttei
Family Rosaceae
Est. zones 3-8
The parking-lot shrub that deserves better: bombproof, bee-covered, colorful twice a year for zero care. The spring buzz-cut is the one job — skip it and it turns twiggy.
Full Sun
Low water
Fast growth
Attracts butterflies
Attracts beesI
Overview
Will spirea 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 spirea actually needs.
Hardy inZones 3-8Spirea at a glance
Common spirea problems
- Aphids (minor)
- Powdery Mildew
- Leaf Spot (minor)
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Growing
Light, water, soil, propagation and the season’s jobs.
How to grow spirea: light, water & soil
How to plant & propagate spirea
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The year
What spirea asks for, month by month.
The spirea year, month by month
BloomPruneWhat each band means
- Bloom — flowers open — pollinators working, frost on blossoms is the danger.
- Prune — shape it now — cuts heal cleanly and structure is visible.
The spirea year as text
- Jan quiet month
- Feb quiet month
- Mar pruning
- Apr pruning
- May bloom
- Jun bloom
- Jul bloom
- Aug bloom
- 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.
Spirea in the garden system
- Shrub layer shrub
- Nectary/insectary
What spirea is grown for
✓ Not known to be toxic
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 spirea, ruled as a catalogue.
Best spirea varieties & cultivars
'Goldflame' (gold leaf/pink bloom); 'Magic Carpet'; 'Renaissance' (bridal wreath, disease-improved); 'Double Play' series
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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 spireayet. 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
Spirea questions, answered straight.
Is spirea safe for kids and pets?
Spirea is commonly eaten and isn't considered toxic, but "commonly eaten" isn't a guarantee for any particular person or animal — allergies, quantity, and which part you eat all matter. Never eat a plant you haven't positively identified, and check with a vet before letting pets or livestock graze anything new.
How do you propagate spirea?
Seed (stratify), cuttings, or layering.
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Elsewhere
Where spirea sits in the library.
Rose
Hydrangea
Common Lilac
Forsythia