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Plant Finder Tool

herb

Horse Mint

Mentha longifolia

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Horse Mint (Mentha longifolia) at Rainbow Gardens

Horse Mint flowers

Horse Mint flowers

(Photo courtesy of NetPS Plant Finder)

Height:  3 feet

Spread:  3 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  5a

Description:

This variety has large aromatic leaves that are used in salads, cooked foods, and tea; lilac-purple flowers rise above in mid to late summer; great container plant, and it is suggested that planting within a pot in the ground will curtail invasiveness

Edible Qualities

Horse Mint is a perennial herb that is typically grown for its edible qualities, although it does have ornamental merits as well. The fragrant pointy green leaves with curious grayish green undersides are usually harvested from late spring to early fall. The leaves have a minty taste.

The leaves are most often used in the following ways:

  • Fresh Eating
  • Cooking
  • Seasoning
  • Tea

Features & Attributes

Horse Mint features bold spikes of lilac purple tubular flowers with purple overtones rising above the foliage from mid to late summer. Its attractive large fragrant pointy leaves remain green in color with curious grayish green undersides throughout the season.

This is an herbaceous perennial herb with a spreading, ground-hugging habit of growth. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition. This is a high maintenance plant that will require regular care and upkeep, and should be cut back in late fall in preparation for winter. It is a good choice for attracting bees and butterflies to your yard, but is not particularly attractive to deer who tend to leave it alone in favor of tastier treats. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Invasive

Aside from its primary use as an edible, Horse Mint is sutiable for the following landscape applications;

  • Mass Planting
  • General Garden Use
  • Groundcover
  • Herb Gardens
  • Container Planting

Planting & Growing

Horse Mint will grow to be about 3 feet tall at maturity, with a spread of 3 feet. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. It grows at a fast rate, and under ideal conditions can be expected to live for approximately 10 years. As an herbaceous perennial, this plant will usually die back to the crown each winter, and will regrow from the base each spring. Be careful not to disturb the crown in late winter when it may not be readily seen!

This plant is quite ornamental as well as edible, and is as much at home in a landscape or flower garden as it is in a designated herb garden. It does best in full sun to partial shade. It does best in average to evenly moist conditions, but will not tolerate standing water. It may require supplemental watering during periods of drought or extended heat. It is not particular as to soil type or pH. It is highly tolerant of urban pollution and will even thrive in inner city environments. This species is not originally from North America. It can be propagated by division.

Horse Mint is a good choice for the edible garden, but it is also well-suited for use in outdoor pots and containers. Because of its spreading habit of growth, it is ideally suited for use as a 'spiller' in the 'spiller-thriller-filler' container combination; plant it near the edges where it can spill gracefully over the pot. It is even sizeable enough that it can be grown alone in a suitable container. Note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Massing  Garden  Groundcover  Herb  Container 
Applications
Flowers  Foliage Color  Attracts Wildlife 
Ornamental Features

Disclaimer - This Plant Finder tool is an online resource representing many of the varieties that we carry over the course of the season, and is intended for informational purposes only. Inventory varies seasonally, so we cannot guarantee that every plant will be in stock at all times - please contact the store directly for current availability. It does not include our entire selection of plants, so be sure to visit our store to see varieties that may not be represented on this list.