Also known as Wormwood, this aromatic herb is valued for its silvery foliage and traditional medicinal use. Easy to grow and drought-tolerant once established!
For optimal germination rates, initiate seed propagation indoors under controlled conditions—unless the species exhibits a high sensitivity to root disturbance. This approach allows precise regulation of temperature, humidity, and light, improving germination consistency and seedling viability. Do not skip any recommended seed treatments, as they are essential for uniform and successful germination.
SEED PREPARATION
- Cold Stratification:
Place seeds on a damp paper towel inside a plastic bag. Refrigerate for 2–4 weeks.
If seeds sprout during stratification, carefully remove and plant them immediately.
WHEN & WHERE TO SOW
- Indoors: Start seeds 6–8 weeks before the last frost.
- Outdoors: Sow directly in late spring after the danger of frost has passed.
- Light Requirement: Full sun
- Soil: Well-draining, sandy or loamy soil with neutral to slightly alkaline pH (6.5–7.5)
SOWING INSTRUCTIONS
- Surface Sow: Do not cover seeds – they need light to germinate.
- Use grow lights to maintain 12–16 hours of light per day.
- Spacing: Thin or transplant seedlings 30–60 cm (12–24 in) apart.
- Watering: Keep the soil evenly moist but not soggy until germination.
Humidity: Use a humidity dome or clear cover to maintain consistent moisture during germination. Open the dome BRIEFLY once per day to allow fresh air in and reduce mold risk. Remove the dome entirely once seedlings emerge.
GERMINATION CONDITIONS
- Ideal Temperature: Use a heating mat to maintain a steady temperature of 20–22°C (68–72°F)
- Germination Time: 14–28 days (AFTER stratification)
- Be patient, germination can be slow and uneven.
POST-GERMINATION CARE
- Light: Provide strong light or grow under fluorescent grow lights if started indoors.
- Water: Water moderately; avoid overwatering.
- Hardening Off: Gradually acclimate seedlings to outdoor conditions before transplanting.
- Maintenance: Once established, Wormwood is drought-tolerant and thrives on neglect. Trim back in early spring to maintain shape and vigor. Avoid overly rich soil, which can reduce aroma and strength.
TIP: Artemisia repels certain pests and can be used as a natural companion plant—but do not plant near food crops as it may inhibit their growth.