Paulownia Elongata Seeds

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Paulownia Elongata is a pure species of the Paulowniaceae family, recognized as one of the fastest-growing hardwood trees in the world. Native to Asia and widely cultivated in North America and China, it is especially valued for its exceptional growth rate, strong but lightweight timber, and versatile applications in forestry, reforestation, and biomass production.

👉 Key characteristics:

Ultra-fast growth: up to 3–5 m in the first year under optimal conditions.
Harvest potential: can reach a harvestable size in only 5–7 years.
Cold tolerance: withstands temperatures down to –15 to –20 °C.
Timber quality: produces light, durable wood suitable for furniture, plywood, veneer, and biofuel feedstock.
High biomass yield: generates a large quantity of annual biomass, ideal for sustainable energy production.
Ornamental value: large green leaves and beautiful lavender-white flowers in spring and early summer.

✔️ Ideal for forestry projects, reforestation programs, agroforestry systems, and biomass/biofuel production.
✔️ Also appreciated as an ornamental tree for parks, gardens, and shade planting.

📊 Technical Specifications

Type: Pure species (non-hybrid)
Genus / Species: Paulownia elongata
Height: 12–22 m
Spread: 9–15 m
Growth rate: Very fast (3–5 m/year under optimal conditions)
Cold resistance: –15 to –20 °C
Hardiness zones: 6–9
Soil pH: 4.5–7.5 (acidic to alkaline)
Soil type: Well-drained clay, loam, or sand
Exposure: Full sun / partial sun
Water requirements: Moderate, drought-tolerant once established
Germination rate: ~90%
Bloom season: Spring to early summer
Flower color: Lavender-white

🌱 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.

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

2) Sowing

Fill trays or pots with pre-moistened substrate (damp, not soggy).
Surface sow: scatter seeds on top—do not cover (they require light to germinate).
Mist gently with water.
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

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

5) Transplanting & Early Growth

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