Hoary rosemary mint (Poliomintha incana)

Hoary rosemary mint

Also known as: Desert rosemary

It is a strongly aromatic shrub with dark green foliage covered in small white hairs. Scattered about the foliage are fuzzy, tubular flowers in shades of light purple and blue with tiny purple spots.

Scientific classification

Species

Hoary rosemary mint (Poliomintha incana)

Mints plantains olives and allies

Instantly identify plants with a snap

Snap a photo for instant plant ID, gaining quick insights on disease prevention, treatment, toxicity, care, uses, and symbolism, etc.

Download the App for Free

Perennial

Lifespan

Shrub

Plant Type

Spring, Summer

Bloom Time

30 cm to 91 cm

Plant Height

Green, Blue

Leaf Color

Images of Hoary rosemary mint

Distribution of Hoary rosemary mint

Distribution Map

Hoary rosemary mint is a plant species with a native range historically confined to North America's southern region. Over time, it has been introduced to various arid and semi-arid areas across the continent, benefiting from similar climatic conditions to its native habitat.

Native

Cultivated

Invasive

Introduced

No species reported

Discover plant distribution and habitat

Gain insights into where plants thrive and how they adapt, helping you identify, cultivate, and protect them with essential information on habitats, distribution maps, and climate trends.

Download the App for Free

Habitat

Sandy desert areas from 4000-6000 ft

Care Guide for Hoary rosemary mint

Every 2-3 weeks

Water

Full sun

Sunlight

15 - 38 ℃

Ideal Temperature

Water: Adapted to arid conditions, hoary rosemary mint thrives on minimal moisture with high drought tolerance. It requires infrequent watering, about once every 2-3 weeks. As an outdoor plant, hoary rosemary mint is ideal for xeric landscapes and rockeries requiring excellent drainage.

Fertilize: Fertilize hoary rosemary mint with a balanced fertilizer in spring and autumn for growth and flowering. Apply high nitrogen fertilizer monthly during the growing season, using half the recommended amount. Decrease feeding in winter and always water hoary rosemary mint before fertilizing to protect roots.

Pruning: Hoary rosemary mint has aromatic leaves and lavender flowers, benefiting from regular pruning. Optimal timing is early to late winter, with up to one-third cut back to promote dense foliage and bloom. Removing dead branches enhances air circulation and vigor, ensuring a healthy plant throughout the growing season.

Propagation: Hoary rosemary mint thrives through sowing in well-draining soil, mimicking its arid habitat. Optimal germination requires a controlled environment, gentle seed handling, and shallow placement. Consistent moisture and adequate light during early development are crucial for seedling vigor and photosynthesis.

Get tips and tricks for your plants.

Keep your plants happy and healthy with our guide to watering, lighting, feeding and more.

Download the App for Free

Learn More About Hoary rosemary mint

Plant disease auto-diagnose & prevention

AI-powered plant doctor helps you diagnose plant problems in seconds.

Download the App for Free