Giant Hyssop Blue

1200 seeds

Giant Hyssop Blue, also known as Anise Hyssop, is a fragrant perennial herb with lavender-blue flower spikes and aromatic leaves that have a sweet anise-like scent. It is highly attractive to bees, butterflies, and other pollinators, making it ideal for herb gardens, pollinator gardens, borders, containers, and cottage gardens. In the Gulf region, it grows best during the cool season.

Best Planting Time

• October to January (recommended)
• Sow during the cool season for the healthiest plants.
• Avoid sowing during the hottest summer months.

Seed Preparation

• Refrigerate seeds for 2–4 weeks (cold stratification) to improve germination (recommended).
• After stratification, soak seeds in lukewarm water for 4–6 hours (optional).
• Use fresh, high-quality seeds.

Soil Preparation

Use fertile, light, well-drained soil rich in organic matter.

Recommended mix:

• 40% Sandy garden soil
• 30% Well-rotted compost
• 20% Coco peat
• 10% Perlite or coarse sand

Ideal soil pH:

• 6.0–7.5

Sowing Method

• Sow seeds in seed trays or small pots.
• Scatter seeds on the soil surface.
• Cover lightly with 2–3 mm of fine soil or vermiculite.
• Keep the growing medium lightly moist.
• Transplant seedlings when they have 4–6 true leaves.

Temperature & Light

• Ideal germination temperature: 18–22°C
• Ideal growing temperature: 18–30°C
• Requires 6–8 hours of direct sunlight daily.
• In the Gulf, light afternoon shade is beneficial during late spring.

Watering

• Keep the soil lightly moist during germination.
• After establishment, water when the top 3–5 cm of soil becomes dry.
• Mature plants are moderately drought tolerant.
• Avoid overwatering and poor drainage.

Germination Time

• 10–21 days

Plant Spacing

• 40–50 cm between plants.
• 50–60 cm between rows.

Flowering

• Begins approximately 90–120 days after sowing.
• Blooms continuously from late winter through spring under Gulf conditions.
• Remove faded flower spikes to encourage additional flowering.

Fertilization

• Mix compost into the soil before planting.
• Apply a balanced fertilizer every 6–8 weeks during active growth.
• Avoid excessive nitrogen to encourage more flowers and stronger fragrance.

Gulf Climate Tips

• Grow during the cool season.
• Water early in the morning.
• Apply mulch to keep the root zone cool.
• Ensure excellent drainage and air circulation.
• Provide light afternoon shade during unusually warm periods.
• Monitor for aphids, spider mites, powdery mildew, and root rot.
• Giant Hyssop Blue is excellent for pollinator gardens, herb gardens, borders, containers, Mediterranean landscapes, and wildlife-friendly gardens throughout the Gulf.