White Horehound (Marrubium vulgare)

White Horehound (Marrubium vulgare) is a tough, low-maintenance perennial herb known for its woolly gray-green foliage and clusters of small white flowers. These Non-GMO White Horehound Seeds produce resilient plants that thrive in full sun, dry conditions, and poor soils, making them ideal for xeriscaping, rock gardens, and low-water landscapes.

This hardy herb forms rounded, bushy clumps and attracts bees and beneficial insects during its summer bloom period. Its strong adaptability and drought tolerance make it a dependable choice for gardeners seeking easy, heat-resistant plants with ornamental value.

Features

• Soft gray-green foliage with white summer blooms
• Non-GMO seed quality
• Strong drought and heat tolerance
• Thrives in poor, rocky, or sandy soils
• Attracts bees and beneficial insects
• Hardy perennial with low-maintenance needs
• Excellent for xeriscape, borders, and dry gardens
• Compact, bushy growth habit

Specifications

• Botanical Name: Marrubium vulgare
• Common Name: White Horehound
• Seed Type: Non-GMO
• Plant Type: Perennial
• USDA Zones: 4–9
• Sun Exposure: Full sun
• Soil Type: Well-drained, sandy or rocky soils
• Water Needs: Low; highly drought-tolerant
• Height: 12–24 inches
• Spacing: 12–18 inches
• Bloom Time: Early to late summer
• Flower Color: White
• Season for Planting: Spring or fall
• Germination Time: 14–21 days
• Germination Temperature: 65–75°F
• Sowing Method: Lightly cover seeds
• Maintenance Level: Low
• Growth Habit: Rounded, bushy, branching
• Wildlife Benefits: Attracts bees and pollinators
• Landscape Uses: Dry gardens, rock gardens, borders, naturalized areas

Planting Guide

• Soil Preparation: Choose well-draining soil; overly rich soil is not necessary.
• Sowing Time: Direct sow in spring after frost or in fall.
• Seed Depth: Cover seeds lightly; about 1/8 inch deep.
• Watering for Germination: Keep soil gently moist until seeds sprout.
• Germination Window: 14–21 days under warm conditions.
• Light Requirements: Full sun for strongest growth.
• Thinning: Space plants 12–18 inches apart.
• Watering After Establishment: Water sparingly; plant prefers dry soils.
• Maintenance Tips: Trim lightly to maintain shape.
• Long-Term Care: Avoid overwatering; plants thrive in heat and dryness.