Kochia scoparia | Burning Bush

A fast-growing ornamental annual prized for its feathery foliage that turns fiery red in autumn. It’s low-maintenance and perfect for borders, mass plantings, or dramatic seasonal accents.

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.

When to Sow

  • Indoors: Start seeds 4–6 weeks before your last expected frost.

  • Outdoors: Sow after the last frost, once the soil has warmed.

Seed Treatment – Cold Stratification

For better germination, cold stratify your seeds before sowing:

  • Place seeds in a moist paper towel inside a sealed plastic bag.

  • Refrigerate for 1–2 weeks.

  • If seedlings sprout in the fridge, remove them gently and plant immediately.

  • Then sow as directed below.

Optional: After stratification, you can soak seeds for 12–24 hours to encourage quicker sprouting.

Germination Conditions

  • Germination Time: 7 to 21 days AFTER stratification

  • Temperature: Best at 20–25°C (68–77°F). Use a heat mat to maintain steady temperatures. 

  • Light Requirement: Do not cover seeds—they need light to germinate. Press gently onto moist soil.

Sowing Instructions

  1. Use a well-draining seed starting mix.

  2. Moisten the soil before sowing.

  3. Press seeds onto the surface and do not cover.

  4. Mist lightly to settle them.

  5. Use grow lights to maintain 12–16 hours of light per day.

  6. 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.

  7. Place out of direct, intense sun.

After Germination Care

  • Keep in a sunny spot or under grow lights to avoid leggy growth.

  • Thin or transplant when seedlings have at least 2 true leaves.

Transplanting Outdoors

  • Harden off seedlings for 7–10 days before planting outside.

  • Choose a sunny location with well-drained soil.

  • Space plants 30–60 cm (12–24 inches) apart.

Watering & Maintenance

  • Water regularly while young.

  • Avoid overwatering once established—Kochia is drought-tolerant.

  • Can be trimmed to maintain shape.

  • Fertilizer is not usually necessary unless soil is poor—use a balanced slow-release feed if needed.

Extra Tips

  • Grows best in full sun and poor to average soils.

  • Avoid planting in soggy or compacted soil.

  • May self-seed if not deadheaded in fall.

Plant Profile

  • Height: 90–120 cm (3–4 feet)

  • Foliage Color: Green in summer, turns brilliant red to burgundy in fall

  • Growth Habit: Upright, bushy, and mounding

  • Lifecycle: Annual

  • Hardiness Zones: USDA 2–11 (grown as an annual)

Happy planting! If you have any questions, feel free to reach out—we’re here to help you grow something beautiful.