Essentials
At a Glance
Plant Type
Groundcover
Height
8 inches
Width
12 inches
Light
Full Sun, Partial Sun, Shade
Zones
4, 5, 6, 7, 8, 9
Water
Moderate
Humidity
Prefers moist, humid conditions
Lifespan
Perennial
Native To
Europe and North Africa
Toxicity
Non-toxic to humans and pets
The Story
Plant Bio
Carex flacca, commonly known as Glaucous Sedge, is a perennial sedge featuring dense tufts of bluish-green, grass-like foliage and airy, spike-like flower clusters that appear in late spring and summer. This species is prized for its striking bluish foliage and low-maintenance nature, making it an excellent choice for ground cover and ornamental edging in shaded or sunny gardens.
Bloom Period:
Uses & Benefits:
Marketplace
Where to Buy
Shipping costs Year-round shipping Free shipping
Planting
How to Grow
- Tuck seeds or divisions into prepared soil in early spring.
- Water thoroughly after planting to settle soil around roots.
- Maintain consistent moisture, especially during dry spells.
- Mulch around plants to retain soil moisture and suppress weeds.
- Divide plants every 3–4 years in early spring or fall.
- Prune back any dead or damaged foliage in late winter.
Pro Tip
Ensure soil stays moist and well-drained for best growth.
Keep It Thriving
Care Guide
Do
- Water regularly to keep soil moist 🌱
- Mulch annually to conserve moisture
- Divide every 3–4 years for optimal vigor
Don't
- Allow soil to dry out completely ❌
- Over-fertilize, which can cause legginess
- Ignore dead or damaged foliage
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Divide | ||||||||||||
| Mulch | ||||||||||||
| Plant | ||||||||||||
| Prune |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Blue Sedge questions
What zones can Blue Sedge grow in?
Blue Sedge is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Blue Sedge deer resistant?
Yes — Blue Sedge is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.
When does Blue Sedge bloom?
Blue Sedge typically blooms in early spring through mid-spring. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Blue Sedge need full sun?
Blue Sedge does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
More Carex to compare
Pennsylvania Sedge
Carex pensylvanica
Everillo Sedge
Carex omegata 'Everillo'
Evergold Japanese Sedge
Carex oshimensis 'Evergold'
Comosa Sedge
Carex comosa
Shortbeak Sedge
Carex brevior
Japanese Sedge
Carex morrowii
Keep exploring
Explore the genus
Collections featuring this plant
Grow Blue Sedge with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.
