Prostanthera ovalifolia — an easy houseplant, prefers partial sun light
SPECIMEN · FROM THE LIBRARY
Prostanthera ovalifolia

Prostanthera Ovalifolia

Updated · 46 observations
ON THIS PLANT

Prostanthera ovalifolia, commonly known as the Oval-leaved Mint Bush, is a small to medium-sized evergreen shrub native to Australia. This plant is a member of the Lamiaceae family and is celebrated for its aromatic foliage and attractive flowers.

Typically, the Oval-leaved Mint Bush grows up to 2 meters tall and features oval-shaped, dark green leaves. These leaves are highly fragrant when crushed or brushed against, releasing a strong minty aroma.

The flowers of Prostanthera ovalifolia are tubular and come in shades of purple or blue. They bloom from late spring through summer, attracting bees and other pollinators.

This plant thrives in well-drained soils with full sun exposure but can also tolerate partial shade. During the growing season, it requires regular watering, although it can withstand periods of drought once established.

Prostanthera ovalifolia is often used as an ornamental plant due to its attractive foliage and flowers. Additionally, its essential oils have medicinal properties and are used to treat respiratory ailments such as coughs, colds, asthma, and bronchitis, among others.

Overall, Prostanthera ovalifolia makes an excellent addition to any garden. Its hardiness, coupled with beautiful blooms that attract pollinators, and its medicinal benefits, make it a valuable plant for both decorative and practical purposes.

A note from PlantMom

oval-leaf mintbush has strong resistance to disease and is usually not susceptible to it. Regarding care, this plant is fairly low-maintenance. When grown outdoors it needs only minimal watering, and larger plants typically do not require pruning. Smaller plants, however, should be pruned after they finish blooming. oval-leaf mintbusht is suitable for anyone with outdoor space, such as a garden or deck, and does not demand much care experience.

— PlantMom
CARE GUIDE

How to keep Prostanthera Ovalifolia.

Light

Oval-leaf mintbush occurs naturally in habitats such as forest understories or rocky locations, where it grows in natural shade. It favors partial sun but can tolerate both full sun and full shade, reflecting its adaptable and hardy nature.

Temperature

oval-leaf mintbush is highly adaptable to a variety of climatic conditions, from intense summers to cold winters. It nevertheless has a preferred temperature range for healthy growth. When temperatures become too high the plant can experience heat and humidity stress that could kill it. In locations where temperatures near the lower limit of its cold tolerance, providing insulation to protect the plant is necessary.

Fertilizer

Timing is important when fertilizing oval-leaf mintbush. Apply fertilizer in early spring and continue once a month until early summer. Fertilizer promotes lovely blooms and supplies energy during both dormant periods and active growth.

CHARACTERISTICS

Botanical profile.

Plant Type
Shrub
Life Cycle
Perennial
Genus
Prostanthera
Family
Lamiaceae
Hardiness Zone
8-11
Mature Height
91 cm
Mature Spread
76 cm
Leaf Color
Green, Variegated, Cream
Leaf Type
Evergreen
Flower Color
Purple, Lavender
Flower Size
1.02 cm to 1.52 cm
Bloom Time
Spring
Planting Time
Spring, Summer, Autumn
Harvest Time
Late spring, Early summer, Mid summer
ALSO KNOWN AS

Other names.

en Mintbush en Oval-leaf mintbush en Purple mintbush
PLATES
Prostanthera ovalifolia leaf
PLATE 01 · leaf
Prostanthera ovalifolia leaf
PLATE 02 · leaf
Prostanthera ovalifolia flower
PLATE 03 · flower
Prostanthera ovalifolia flower
PLATE 04 · flower
ALSO IN THE LIBRARY

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