Hawaiian Sedge

Carexwahuensis subsp. rubiginosa

Family
Cyperaceae (sy-peer-AY-see-ee)
Genus
Carex (KAR-eks)
Synonym
Carex oahuensis
Sun Exposure
Full Sun
Sun to Partial Shade
Foliage
Evergreen
Smooth
Textured
Height
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
Spacing
6-9 in. (15-22 cm)
9-12 in. (22-30 cm)
12-15 in. (30-38 cm)
Hardiness
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Danger
N/A
Bloom Color
Inconspicuous/none
Bloom Time
Blooms all year
Other Details
Category
Tropicals and Tender Perennials
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Non-patented
Propagation Methods
By dividing rhizomes, tubers, corms or bulbs (including offsets)
Direct sow as soon as the ground can be worked
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Seed Collecting
Allow seedheads to dry on plants; remove and collect seeds
Seed does not store well; sow as soon as possible
Regional

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Gardener's Notes:

1
positive
0
neutral
0
negative
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M
Keaau, HI | October 2014 | positive

An endemic Hawaiian Sedge that occurs in dry to mesic forest and mesic to subalpine shrubland.

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