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Scientific Name
Gahnia sieberiana
Family Name
CYPERACEAE
Common Name
Red-fruit Saw-sedge
Status
Height
to 2.5m
Flowers
Many clustered flowers in a dense, bristly honey-brown flowerhead which blackens with age, 25-90cm long.
Fruit
Nut
Form
Perennial plant with hollow stems, triangular in cross-section.
Municipalities
Break O'Day; Burnie; Central Coast; Circular Head; Devonport; Dorset; Georgetown; Kentish; King Island; Kingborough; Latrobe; Launceston; Meander Valley; West Tamar
Communities
Habitat Notes
In damp places, including the edges of swamps, wet heaths, roadside ditches and coastal areas in the NW, Midlands and NE.
Site Tolerance
Frost Tolerance
Soil Tolerance
General Notes
Germinates readily from seed. Seed has an after-ripening period of 12 months. Division of Gahnia spp. tends to have little success. Suitable below powerlines.
Propagation Details
Propagation Calendar
Flowering Months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Seed Collecting Months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sowing Months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Cutting Months
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Seed Information
Seed Collection
Nut 3-5mm long, bright red and shining. Most of the seed will remain held in the seedhead for at least a month. Cut the seedheads with secateurs and allow to dry, then vigorously thresh against a hard surface to extract seed.
Seed Treatment Method
Storage
Seed Storage Life
Viable Seeds Per Gram
Seed Treatment Notes
Germination Time
Suitable for Direct Seeding
Cuttings
Expected Time to Take Root
Expected Time to Plant Out
Propagation by Division
N.B. Transplant only from nearby to avoid disease.
Cutting Notes
Copyright 2000-2009, Understorey Network Incorporated. Updated 2024-10-14
Database development and website design by
Andrew Smith