Home
Calendar
Past Events
About Us
Contact
Membership
Links
Plant Database
Search
Family Index
Communities
Municipalities
Threatened Species
Botanical Glossary
Newsletters
Bush Sounds
Communities
Scientific Name
Prostanthera rotundifolia
Family Name
LAMIACEAE (LABIATAE)
Common Name
Round-leaved Mint-bush
Status
Vulnerable
Height
2.0m (200cm)
Flowers
Lilac to purple in showy sprays.
Fruit
Nutlets
Form
Much-branched aromatic shrub
Municipalities
Break O'Day; Georgetown; Launceston; Northern Midlands; West Tamar
Communities
Riparian
Habitat Notes
Locally frequent in north and east, along river banks and on adjacent rocky hillsides.
Site Tolerance
Dry; Moist; Rocky; Shady
Frost Tolerance
Moderate
Soil Tolerance
Clay; Fertile; Loam; Well-drained
General Notes
Prostantheras require full sun and excellent drainage. Even in ideal conditions they are not long-lived. To overcome the problem, the Australian National Botanic Gardens began, in the 1970s, to graft Prostanthera on to Westringia fruticosa rootstock. If grafting is not done, Prostanthera generally needs to be repropagated regularly. 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
Capsules split into four segments each with own slightly flattened, brown or grey seed, up to 2mm long. seeds can be collected close to maturity and dried in a warm spot until released
Seed Treatment Method
Standard
Seed Storage Life
Viable Seeds Per Gram
Seed Treatment Notes
Use fresh seed, germination may still be difficult. May germinate over a long period.
Germination Time
Suitable for Direct Seeding
Cuttings
Expected Time to Take Root
4-6 weeks*
Expected Time to Plant Out
3-6 months
Propagation by Division
N.B. Transplant only from nearby to avoid disease.
No
Cutting Notes
* on heat and mist.Easily grown from cuttings.May be slow to strike. Young but firm tips and stems strike readily on heat and mist.
Copyright 2000-2009, Understorey Network Incorporated. Updated 2024-10-10
Database development and website design by
Andrew Smith