
Prostanthera cuneata is a compact shrub that typically grows between 1-2 meters in height.
It has a spreading habit, making it a great choice for hedges or borders.
The leaves of Prostanthera cuneata are narrow and lance-shaped, growing up to 2.5 cm in length.
Growing and Care
If you're looking to grow a Prostanthera cuneata plant, you'll want to provide it with the right conditions. Grow it under glass in a peat-free, loam-based compost in full light.
For outdoor growth, choose a spot with moist but well-drained soil in full sun, and make sure it's in a sheltered position. This will help prevent damage from harsh weather conditions.
You can propagate the plant by seed or semi-ripe cuttings. This is a great way to share the plant with friends or start new ones.
Pruning group 8 plants like the Prostanthera cuneata should be pruned after flowering. Be careful not to hard prune, as this may be detrimental to the plant's health.
The plant may be susceptible to glasshouse red spider mite and glasshouse whitefly if grown in a conservatory or greenhouse. Regular checks and maintenance can help prevent infestations.
The Prostanthera cuneata plant has gained the Royal Horticultural Society's Award of Garden Merit, which is a testament to its hardiness and beauty.
Plant Details
Prostanthera cuneata is usually an erect, more or less compact shrub that typically grows to a height of 0.5–1.5 m.
The leaves are strongly aromatic when crushed, egg-shaped with the lower end towards the base, often appearing wedge-shaped, 4–6 mm long, and 3.5–5 mm wide.
The flowers are arranged singly in four to ten leaf axils near the ends of branchlets, each flower on a pedicel 1–2 mm long.
Description
Prostanthera cuneata is usually an erect, more or less compact shrub that typically grows to a height of 0.5–1.5 m (1 ft 8 in – 4 ft 11 in).
The branches are more or less cylindrical and covered with white hairs.

The leaves are strongly aromatic when crushed, egg-shaped with the lower end towards the base, often appearing wedge-shaped.
They are 4–6 mm (0.16–0.24 in) long and 3.5–5 mm (0.14–0.20 in) wide, and are either sessile or on a petiole up to 0.5 mm (0.020 in) long.
Flowers are arranged singly in four to ten leaf axils near the ends of branchlets.
Each flower is on a pedicel 1–2 mm (0.039–0.079 in) long.
The sepals are green, usually tinged with purple and form a tube 2.5–3 mm (0.098–0.118 in) wide with two lobes.
The petals are pale lavender to almost white with reddish or purple blotches inside, forming a tube 6–8 mm (0.24–0.31 in) long.
Flowering occurs from November to April.
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Taxonomy and Naming
Prostanthera cuneata was first formally described in 1848 by botanist George Bentham in de Candolle's treatise Prodromus Systematis Naturalis Regni Vegetabilis.
The specific epithet "cuneata" means "wedge-shaped".
Environmental Requirements
To thrive, the Prostanthera cuneata plant prefers full sun or partial shade. It generally requires 4 to 6 hours of direct sunlight each day.

The amount of sunlight needed can vary depending on the climate and growing zone. In regions with high heat and humidity, some afternoon shade is recommended to give the plant a break from the intense heat.
In regions with harsh winter sun, the plant should be shielded from the cold temperatures. This is especially important during periods of particularly cold weather.
In general, this species will be happiest in direct sun during the cooler parts of the day, such as morning and late afternoon.
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Frequently Asked Questions
How big do Prostanthera cuneata get?
Prostanthera cuneata typically grows to 1-2 feet in height, but may reach slightly taller heights in some cases.
What are the medicinal uses of Prostanthera cuneata?
Prostanthera cuneata has medicinal uses including treating colds and headaches due to its antibacterial, antifungal, and carminative properties. Its leaves contain volatile oils like menthol and cineole, which contribute to its therapeutic benefits.
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