Paulownia Shantong Hybrid Roots

€69,90
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Paulownia Hybrid Shan Tong – Premium Bare Root Cuttings

The Paulownia Hybrid Shan Tong (Paulownia fortunei × Paulownia tomentosa) is a highly resilient hybrid, specially selected in Europe and China for its fast growth, strong cold tolerance, and stable timber quality.
It is one of the most trusted varieties for continental climates, widely planted across Central and Eastern Europe where winters are harsh and require exceptional resistance.

This product consists of premium Grade A bare root cuttings, naturally conditioned and prepared for spring planting, ensuring strong establishment and high success rates for both commercial and ecological projects.

⭐ Key Characteristics

Cold-resistant hybrid: withstands extreme winter temperatures down to –28 °C.
Fast annual growth: reaches 2–3 m per year, with a mature height of 12–20 m.
European adaptability: ideal for continental climates with severe winters and variable soil conditions.
Stable wood quality: straight-grained, lightweight, and suitable for furniture, veneer, biomass, plywood, and reforestation projects.
Ecological benefits: excellent CO₂ absorption and oxygen production — supports sustainable forestry and environmental restoration.
Highly reliable: trusted by professionals for its stability, resilience, and long-term productivity.

📊 Technical Specifications

Genus: Paulownia
Type: Hybrid
Parentage: P. fortunei × P. tomentosa
Form: Bare root cutting
Grade: A
Average length: 10–18 cm
Diameter: 0.8–3.5 cm
Survival rate: 99 %
Growth rate: 2–3 m/year
Mature height: 12–20 m
Spread: 9–15 m
Primary applications: Timber production, veneer, biomass, reforestation
Soil requirements: Well-drained soils (clay, loam, sand), pH 4.5–7.5
Exposure: Full sun to partial sun
Hardiness zones: 5–8
Cold tolerance: down to –28 °C
Delivery: Bare roots, carefully packed to preserve humidity and freshness

🌿 Why Choose GreenSeed Paulownia?

Fresh roots harvested and packed for every order
Premium European-proven hybrid — Shan Tong is trusted for harsh climates
Secure packaging ensuring safe transport and maximum vitality
Expert support from a dedicated Paulownia specialist

Required Materials

Fine, sterile seed-starting mix (peat/coco + perlite), light and well-draining
Seed trays, small pots, or a mini-greenhouse
Fine mist sprayer or watering can with a soft rose
Clear lid, plastic film, or humidity dome
Thermometer or heat mat to maintain 20–25 °C (68–77 °F)
Bright growing area or horticultural LED light (PPFD 100–250 μmol/m²/s)

1) Stratification (Cold Treatment)

Optional but recommended to achieve uniform germination.

Mix the seeds with a slightly moist substrate (fine sand, vermiculite, or light seed mix).
Place the mixture in an airtight bag or sealed container.
Refrigerate at about 4 °C (39 °F) for 4–12 weeks.

2) Sowing

Fill containers with pre-moistened substrate (moist but not waterlogged).
Scatter the seeds on the surface — do not cover; they need light to germinate.
Mist gently with water.
Cover with a clear lid or humidity dome.
For large-scale production, use a misting chamber or heated propagation bench.

3) Germination Conditions

Temperature: 20–25 °C (68–77 °F), stable
Light: bright indirect light or LED grow lighting
Duration: usually 10–20 days
Substrate: always slightly moist, never waterlogged
Ventilation: avoid cold drafts but ensure minimal air exchange

4) After Germination (Critical Phase)

Open the lid slightly each day to reduce excess humidity.
Gradually increase ventilation to strengthen stems.
Remove the cover completely once seedlings have 1–2 true leaves.
Maintain strong light to prevent weak, elongated seedlings.

5) Transplanting & Early Growth

Transplant when seedlings reach 10–15 cm (4–6 in) or show 2–3 true leaves.
Use individual pots (7–10 cm) for optimal root development.
Keep plants in bright shade for 3–5 days after transplanting, then gradually expose them to full sun over 1–2 weeks.
Water moderately: avoid both drought and excess moisture.
Optional for production: apply a light, balanced fertilizer after 3–4 weeks (e.g. NPK 10-10-10).

PHASE 1 — POT CULTURE (UNDER COVER)

Objective: ensure maximum rooting success, protect plants from frost, and achieve uniform sprouting.

1) Rehydration (mandatory)

Before planting:

Soak the root cuttings in clean water for 5 minutes.
→ This reactivates the tissues and improves the success rate.

⚠️ Do not exceed 5 minutes.

2) Start Period

Early spring
Ideal temperature: 15–25 °C (59–77 °F)
Under a greenhouse, tunnel, or bright sheltered area

3) Pot Planting

Use individual pots for optimal root development and uniform emergence.

✔️ Root orientation

Place the thicker end upward (bud side).
Insert the root slightly angled (20–30°)
→ Promotes activation of the upper buds.

✔️ Covering

Cover the root with no more than 1 cm of substrate.
(Buds must remain close to the surface.)

4) Recommended Substrate

A heavy substrate slows down emergence. A light, airy mix ensures faster and stronger sprouting.

Use:

Fine horticultural potting mix
Light, well-draining substrate
Optional: perlite for extra aeration

‼️ Paulownia does not tolerate excess water.

5) Watering (pot phase)

Water moderately after planting.
Keep the substrate slightly and consistently moist.
Never waterlog the pot.
Avoid all standing water.

6) Sprout Emergence

Timing depends on temperature and conditions:

Sprouting usually occurs 3 to 8 weeks after planting.
Faster in warm and stable environments.

In case of cold weather or late frost:
→ Cover pots with frost protection fleece.