Paulownia Z07 Hybrid Roots

€69,90
Unit price

Quantity

Paulownia Hybrid Z07 – Premium Bare Root Cuttings (Grade A)

The Paulownia Z07 is an advanced second-generation superhybrid, created from the triple cross
Paulownia tomentosa × P. fortunei × P. kawakamii — one of the most sophisticated hybridizations in modern Paulownia breeding.
Developed in China and now used globally, the Z07 is recognised as one of the fastest-growing and most cold-resistant Paulownia hybrids ever produced, offering exceptional performance across both mild and harsh climates.

This hybrid stands out for its unmatched vigour, rapid trunk formation, and strong resilience, making it a leading choice for commercial plantations, agroforestry, timber production, carbon offset projects, and large-scale ecological restoration.
Its superior root system allows for rapid establishment and strong early growth, even in variable soils and challenging conditions.

Each root supplied by GreenSeed Paulownia is premium Grade A, carefully selected for size, health, and structural integrity. Roots are conditioned for spring planting, ensuring optimal vitality and high success rates for both professional growers and private landowners.

⭐ Key Characteristics

Second-generation superhybrid: combines the strength of three species, resulting in exceptional vigour and highly stable performance.
Ultra-fast growth: reaches 5–6 meters in the first growing season under favourable conditions — one of the fastest rates in the Paulownia family.
Exceptional cold tolerance: successfully tested down to –33 °C (–27 °F), making it suitable for continental regions and high-risk zones.
High-value timber: produces lightweight, straight, and dimensionally stable wood used for furniture, veneer, plywood, musical instruments, and premium applications.
Environmental benefits: absorbs large quantities of CO₂ and restores degraded soils thanks to its extensive root system.
Versatile plantation suitability: ideal for forestry projects, carbon offset programmes, biomass production, silvopasture, and agroforestry systems.
High survival rate: thick and vigorous roots provide up to 99% success when planted under proper conditions.

📊 Technical Specifications

Genus: Paulownia
Type: Second-generation superhybrid
Parentage: P. tomentosa × P. fortunei × P. kawakamii
Form: Bare root cutting
Grade: A (premium selection)
Average length: 10–18 cm
Diameter: 0.8–3.5 cm
Survival rate: 99 %
Growth rate: 5–6 m/year under optimal conditions
Mature height: 12–20 m
Primary applications: commercial timber, reforestation, ecological restoration, biomass, agroforestry
Soil requirements: well-drained clay, loam, or sandy soils; pH 4.5–7.5
Exposure: full sun (heliophyte)
Hardiness zones: 5–10
Cold tolerance: down to –33 °C (–27 °F)
Delivery: bare roots packaged to retain humidity, vitality, and integrity during transport

🌿 Why Choose GreenSeed Paulownia?

Freshly harvested Grade A roots prepared individually for each order
One of the world’s most advanced Paulownia hybrids, with exceptional cold resistance and growth
Professional packaging ensuring maximum freshness and safe transit
Specialised expertise dedicated entirely to Paulownia hybrids and species
Trusted supplier for timber growers, reforestation programs, and ecological projects worldwide

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.