Perennial
White Mountain Mint
Pycnanthemum incanum
Traits
Varieties We Carry
StandardPycnanthemum incanum
Sizes & Pricing
1 galFrom$7.95
Fresh this week. Last restocked Mar 11.
LightFull Sun to Partial Shade
WaterLow to Moderate
Mature size2-3.5 feet × 3-4 feet
About White Mountain Mint
An erect, many-branched herbaceous perennial in the mint family with distinctive hoary white upper leaves and small two-lipped white flowers with purple spots in dense tiered clusters. The foliage emits a strong spearmint-like fragrance when crushed. Starting at $7.95.
Plant details
- Bloom Season
- Summer
- Flower Color
- White
- Growth Rate
- Moderate
- Foliage
- Deciduous
- Soil
- Sandy, Loam, Well-drained
Care essentials
Light
White mountain mint grows best in full sun in NE Florida; it tolerates part shade but becomes leggy and blooms less freely. Afternoon shade can help in zone 9b's hottest months.
Water
Drought-tolerant once established in well-drained, sandy NE Florida soil. Water weekly during the first growing season; thereafter rely on rainfall except in extended dry spells. Good drainage is essential — avoid wet feet.
Soil & Fertilizer
Thrives in lean, sandy to loamy, well-drained acidic soils — no rich amendments needed. Avoid high-nitrogen fertilizers, which reduce flowering. Divide clumps every 3–4 years to control spread; cut back to ground in late fall after dormancy.
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Common questions
Is White Mountain Mint a good plant for St. Augustine?
White Mountain Mint is a perennial for Zone 9b coastal Florida gardens, reaching 2-3.5 feet × 3-4 feet.
Care information verified from
Last reviewed June 2026. Our care guidance comes from trusted horticulture sources and decades of helping St. Augustine gardeners. Conditions here can vary dramatically from one area to the next, so come ask us and we'll tailor it to your yard.