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Paulownia Z07 Hybrid Seeds
Paulownia Z07 Hybrid Seeds

Paulownia Z07 Hybrid Seeds

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The Paulownia Hybrid Z07 is a second-generation super-hybrid, created from a three-way cross of Paulownia tomentosa × Paulownia fortunei × Paulownia kawakamii. Developed in China, it is considered one of the fastest-growing and most cold-resistant Paulownia varieties worldwide, making it a benchmark for professional forestry and ecological projects.

👉 Key Characteristics

  • Super-hybrid (3 parents): combines vigor, adaptability, and exceptional productivity.

  • Extreme growth rate: up to 5–6 meters in the first year under optimal conditions.

  • Cold resistance: tested and proven down to –33 °C (–27 °F).

  • High-quality timber: lightweight, stable, and widely used for furniture, veneer, and plywood.

  • Ecological benefits: excellent CO₂ absorption and soil regeneration capacity.

  • Versatility: suitable for ecological reforestation, large-scale forestry, and intensive commercial plantations.

✔️ Recognized worldwide as one of the most advanced Paulownia hybrids.
✔️ Successfully cultivated across Europe, Asia, and North America for timber and ecological purposes.


📊 Technical Specifications

  • Genus: Paulownia

  • Type: Super-hybrid

  • Parents: P. tomentosa × P. fortunei × P. kawakamii

  • Height: 12–20 m

  • Spread: 3–5 m

  • Growth rate: Extremely fast (up to 5–6 m/year)

  • Cold resistance: –33 °C (–27 °F)

  • Soil: Well-drained clay, loam, or sandy soils (pH 4.5–7.5)

  • Exposure: Full sun (heliophyte)

  • Hardiness zones: 5–10

  • Main uses: Commercial plantations, ecological reforestation, timber production

🌱 Paulownia Seed Sowing Guide

Practical, step-by-step instructions to germinate Paulownia from seed with high success.

🧰 Required Materials

  • Substrate: fine seed-starting mix, light and well-draining (optional: peat/coco + a bit of perlite)
  • Containers: seed trays, mini-greenhouse, or small pots
  • Watering: spray bottle or fine-rose watering can
  • Protection: clear lid, plastic wrap, or humidity dome
  • Thermometer: to keep 20–25 °C (68–77 °F)
  • Light source: bright windowsill or grow light if natural light is insufficient

1) Stratification (Cold Treatment)

Optional but recommended for better germination speed and uniformity.

  1. Mix seeds with slightly moist substrate (peat, coco, or sand).
  2. Place in a sealed bag or container.
  3. Refrigerate at ≈ 4 °C (39 °F) for 4–12 weeks (1–3 months).

2) Sowing

  1. Fill trays or pots with pre-moistened substrate (damp, not soggy).
  2. Surface sow: scatter seeds on top—do not cover (they require light to germinate).
  3. Mist gently with water.
  4. Cover with a transparent lid or plastic wrap to maintain humidity (mini-greenhouse effect).

3) Germination Conditions

  • Temperature: 20–25 °C (68–77 °F)
  • Light: bright indirect light; avoid harsh direct sun
  • Timeframe: typically 10–20 days (sometimes longer)
  • Moisture: keep substrate evenly moist, never waterlogged

4) After Germination

  1. Gradual aeration: once seedlings appear, open the cover slightly each day to reduce humidity and prevent damping-off.
  2. Remove cover: when seedlings reach 1–2 true leaves.

5) Transplanting & Early Growth

  1. Transplant at 10–15 cm (4–6 in) tall or at 2–3 true leaves if crowded.
  2. Pot individually; keep in bright shade for 3–5 days, then increase sun exposure gradually.
  3. Water regularly but moderately to avoid overwatering.
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