How to Grow Purple Mint Bush
Purple Mint Bush
Elsholtzia stauntonii
shrubPurple Mint Bush is a deciduous to semi-evergreen shrub native to China, prized for its fragrant purple-violet flower spikes that bloom in late summer and fall. The plant features aromatic, lance-shaped leaves that release a minty-eucalyptus fragrance when brushed, and attracts pollinators abundantly. It grows as a compact, rounded shrub typically 3-5 feet tall and wide.
When should you plant Purple Mint Bush in your zone?
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Example Purple Mint Bush timeline · Pittsburgh, PA (Zone 6b)
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Plant Purple Mint Bush
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Purple Mint Bush
Late summer into fallBefore the first fall frost (≈ Nov 8)
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Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 5-9, with best performance in zones 6-8
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Get my Purple Mint Bush timeline →Growth Stages
Establishment
First 6-12 monthsYoung plants develop root systems and initial branching structure
Water regularly to establish roots; protect from harsh winds; mulch around base with 2-3 inches of organic material
Vegetative Growth
Spring through mid-summerLeafy growth expands; plant develops dense branching habit with aromatic foliage
Water during dry spells; light pruning to shape plant; fertilize monthly with balanced fertilizer
Budding
Late July through AugustPurple flower buds form at branch tips in late summer
Maintain consistent moisture; avoid heavy nitrogen fertilizer to encourage flowering over vegetative growth
Flowering
August through October, sometimes into NovemberShowy purple-violet flower spikes (1-3 inches long) appear abundantly, highly attractive to butterflies and bees
Continue regular watering; deadhead spent flowers to encourage continued blooming; allow some flowers to remain for seed production if desired
Dormancy
November through FebruaryIn colder zones, foliage drops and plant enters winter rest; in warmer zones, may retain some leaves
Prune in late winter (February-March) to remove dead wood and shape plant; cut back to 12-18 inches if desired for rejuvenation
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Spray foliage with water to dislodge; use insecticidal soap or neem oil for severe infestations; improve air circulation
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Yellow sticky traps; neem oil or insecticidal soap; encourage natural predators
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Ensure good air circulation; avoid overhead watering; apply sulfur dust or potassium bicarbonate fungicide; remove affected foliage
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Hand-pick early morning; use pheromone traps away from plant; neem oil spray; encourage beneficial predators
Uses
Aromatic Tea and Beverage Flavoring
CulinaryFresh or dried leaves can be steeped to create a minty aromatic tea with eucalyptus notes. Leaves add unique flavor to herbal tea blends and can garnish cold beverages. [source]
Traditional Herbal Remedy
MedicinalIn Chinese herbalism, related Elsholtzia species have been used to support digestion and respiratory health. The plant contains volatile oils with potential antimicrobial properties. [source]
Natural Fragrance and Cut Flowers
HouseholdPurple flower spikes make excellent fresh or dried cut flowers for floral arrangements, and dried flowers retain fragrance for long-lasting potpourri and sachets. [source]
Late-Season Pollinator Support
WildlifeAbundant late-summer and fall flowers provide crucial nectar and pollen for monarch butterflies, native bees, and other pollinators during a critical time when other flowers are fading. [source]
Dried Flower Arrangements
CraftFlower spikes dry beautifully and retain their purple color and form, making them ideal for dried arrangements, wreaths, and long-lasting floral crafts. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Purple Mint Bush is primarily ornamental; harvest fresh leaves throughout the growing season for aromatic use by pinching or cutting stems. Harvest flowers when fully open for fresh arrangements or drying. Cut sprigs in morning after dew dries for best aroma. For drying, harvest in early bloom stage and hang bundles upside down in cool, dark location.
Fun Facts
- 🌱 Purple Mint Bush is native to China and was introduced to Western gardens relatively recently, gaining popularity as gardeners recognize its exceptional value for late-season butterfly and bee support.
- 🌱 Despite its common name suggesting mint family (Lamiaceae), the plant's minty-eucalyptus aroma comes from volatile oils in the foliage that are released when leaves are touched or brushed—the scent intensifies in warm weather.
- 🌱 The plant is sometimes called 'Mint Shrub' or 'Autumn Mint Bush' because it produces its most prolific blooms in late August through October when many other garden plants are declining, making it a butterfly magnet during migration season.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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