True Blue Hyssop (Hyssopus officinalis) Herb Blue Violet Flower Seeds

True Blue Hyssop (Hyssopus officinalis) is a fragrant perennial herb known for its vibrant blue-violet flowers and fine aromatic foliage. It brings color, texture, and scent to gardens and attracts bees, butterflies, and hummingbirds throughout the summer.

This easy-to-grow plant thrives in well-drained soil and full sunlight, making it an excellent choice for borders, herb gardens, rock gardens, or container planting. Its long-lasting blooms and compact growth habit make it both decorative and practical.

True Blue Hyssop is also valued as a low-maintenance perennial, returning year after year in suitable climates and enhancing biodiversity in pollinator-friendly landscapes.

Features

• Premium-quality Non-GMO Hyssopus officinalis seeds
• Produces brilliant blue-violet flower spikes
• Aromatic foliage adds fragrance and texture
• Attracts bees, butterflies, and hummingbirds
• Perfect for sunny gardens, borders, and containers
• Drought-tolerant and low-maintenance once established
• Long-lasting summer bloom period

Specifications

• Scientific Name: Hyssopus officinalis
• Common Name (US): True Blue Hyssop
• Plant Type: Perennial herb
• Foliage Color: Green
• Flower Color: Blue to violet
• Height: 18–24 inches (45–60 cm)
• Spread: 12–18 inches (30–45 cm)
• Bloom Season: Mid to late summer
• Light Requirements: Full sun
• Soil Type: Well-drained, sandy, or loamy soil
• Soil pH: 6.0–8.0
• Watering Needs: Low to moderate; drought-tolerant once mature
• Temperature Range: 65–85°F (18–29°C)
• USDA Hardiness Zones: 4–9
• Days to Germination: 14–21 days
• Seed Depth: 1/8 inch (3 mm)
• Plant Spacing: 12–18 inches (30–45 cm)
• GMO Status: Non-GMO
• Life Cycle: Perennial
• Maintenance Level: Easy
• Pollinator Friendly: Yes
• Companion Plants: Lavender, Sage, Thyme, and Rosemary
• Uses: Ornamental, aromatic, and pollinator-friendly gardens

Planting Guide

• When to Sow: Start seeds indoors 6–8 weeks before the last frost or sow directly outdoors after frost danger has passed.
• Seed Depth: Sow seeds about 1/8 inch deep in well-drained soil.
• Light Requirement: Full sunlight (6–8 hours daily).
• Watering: Keep soil moist until germination; once established, water moderately.
• Transplanting: Move seedlings outdoors after hardening off when they reach 3–4 inches tall.
• Maintenance: Prune lightly after flowering to encourage bushy growth.
• Harvest: Leaves and flowers can be harvested during peak bloom for aromatic use.