Round Leaf Mint Bush, Australian Mint Bush
Prostanthera rotundifolia 'Ghost Cave'

Family: Lamiaceae (lay-mee-AY-see-ee) (Info)
Genus: Prostanthera (pros-TAN-ther-uh) (Info)
Species: rotundifolia (ro-tun-dih-FOH-lee-uh) (Info)
Cultivar: Ghost Cave

Category:

Shrubs

Height:

6-8 ft. (1.8-2.4 m)

8-10 ft. (2.4-3 m)

10-12 ft. (3-3.6 m)

Spacing:

6-8 ft. (1.8-2.4 m)

8-10 ft. (2.4-3 m)

Hardiness:

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:

Sun to Partial Shade

Light Shade

Danger:

Unknown - Tell us

Bloom Color:

Violet/Lavender

Bloom Time:

Mid Spring

Late Spring/Early Summer

Foliage:

Evergreen

Aromatic

Other details:

Average Water Needs; Water regularly; do not overwater

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us

Regional

This plant has been said to grow in the following regions:

Vancouver, British Columbia

Gardeners' Notes:

2
positives
0
neutrals
0
negatives
RatingContent
Positive

On Oct 25, 2010, minoa65 from Vancouver, BC, BC (Zone 7a) wrote:

This plant is one of the lovliest shrubs I have ever grown in the ground in Vancouver. I have grown this plant on more than one occasion.

I live in a climate where we experience, usually, what is considered by the USDA to be zone 7b. We frequently experience zone 8a winters. I grew this plant outside in Vancouver, British Columbia for two winters in a sheltered area between mine and the neighbours one-storey houses in an area that recieves about six hours of direct sun a day in the summer. The third winter we had our coldest winter in 40 years (zone 7a or -15 Celcius/5 Fahrenheit) where it did freeze and die. In this city we get about 1600 mm or 62 inches of rain a year. When considering hardiness we always have to consider that cold hardiness ratings don'... read more

Positive

On Apr 5, 2010, lovedirtynails from Portland, OR wrote:

I live in Zone 8, but love the plant so much I buy it anyway and treat it as an annual. It has a lovely fragrance and form. Maybe I can protect it this winter.