Photo by Melody

PlantFiles: Round Leaf Mint Bush, Australian Mint Bush
Prostanthera rotundifolia

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

One vendor has this plant for sale.

5 members have or want this plant for trade.

Category:
Herbs
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:
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
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:
Rose/Mauve
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

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There are a total of 17 photos.
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Profile:

4 positives
3 neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Neutral carolnorthbay On Apr 14, 2014, carolnorthbay from Napa, CA wrote:

Have read Australian Mint Bush is short-lived so should be grateful we've had one for ten years. It has a lovely shape mainly from my pruning off the deadwood low on main branches. Now it is only sparsely leaved, and the gorgeous bloom doesn't cover the plant in April but appears only in patches near bottom edge. Very droopy in summer sun; watering does help. We may lose it this year; it's been on "last legs" for several.

Positive mirrormirror On Sep 8, 2013, mirrormirror from PLAYA DEL REY, CA wrote:

Planted close to the ocean in S.California 2 yrs ago its grown into a perfect shrub about 4ft tall and 3ft wide. Light and lacey, interesting culinary/herby perfume. Now I want to move it and I'm advised to wait till cool weather cut it back to about 12-15" and water generously after replanting. Has anyone any experience?

Neutral Milanart On Aug 18, 2011, Milanart from Westminster, CA wrote:

I have been very pleased with this plant for about 4 years. It is in a semi-shaded spot, with good drainage, and right by the sprinkler head. However, it has become very twiggy in its interior, and I am in the process of thinning out the numerous dead twigs that are making it look scraggly. I had gently pruned it to keep a manageable shape (gardeners did a rather bad job). It looks like it wants to produce new growth from the junctions of the old twigs, so I am hopeful that I can get it back to a more bushy state. It is about 5 ft tall, and four feet wide, but you can see right through it now. It does bloom in the spring, and has a very unique and refreshing scent.

Positive shokami2 On Dec 13, 2008, shokami2 from Coos Bay, OR (Zone 8a) wrote:

the mint bush is a really tough hardy plant here. we can get down into the 30's and occassionally the 20's and its a trooper. high winds, hail, heat, nothing seems to bother it. loves to be trimmed, infact it you do so it will keep it full instead of the open look you can get with this. i will walk across my garden just to pull on the leaves to get the wonderful scent! very refreshing. mine is in full sun and gets the north and westerly winds and rain and hail. nothing seems to faze it.

Positive tiffanya On Jul 4, 2006, tiffanya from Sumner, WA (Zone 8a) wrote:

I really love this plant. I originally picked up two and was trying an experiment -- one was in part-full sun, the other in shade. The one in shade remained at about 1-foot high for two years, but after premature spring warming followed by a sudden frost early this year it died. The one in part-full sun (morning shade, afternoon-early eve full sun) is doing wonderfully. It has grown to nearly 5-feet high and has been trimmed into a boxy shape. This year was its first flowering; it has been in its current South-West exposure for 2 years now. When you brush up against it, it releases a pleasant, yet strong, scent. Very nice plant.

Neutral tcfromky On Sep 29, 2004, tcfromky from Mercer, PA (Zone 5a) wrote:

Beautiful small to medium-sized aromatic shrub with tiny ovate or rounded leaves. Completely smothered with pretty lavender blossoms in spring.

Positive angelam On May 22, 2004, angelam from melbourne
Australia wrote:

This is a nice compact shrub, with dense evergreen foliage that is lovely in flower and which smells good all year round. While it reputedly doesn't like poorly drained soils it is growing well in our heavy clay soil in full sun.

Regional...

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

Arcadia, California
Eureka, California
Napa, California
Playa Del Rey, California
Santa Rosa, California
Westminster, California
Bunker Hill, Oregon
Portland, Oregon
North Augusta, South Carolina
Seattle, Washington (2 reports)
Sumner, Washington



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