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.