InVitro

Exclusive Paulownia Clone In Vitro 112® – Ultra- Fast growing trees

At IN VITRO SL, we developed and extensively field-tested for over 20 years our Paulownia Clon InVitro 112®, a hybrid of Paulownia elongata × fortunei. Produced in our laboratory in Barcelona and distributed worldwide, this exclusive clone is non-GMO, non-invasive —making it the ideal choice for sustainable forestry, renewable biomass energy, and global reforestation projects.

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Clon In Vitro 112®

  • We have been producing our variety of

    Paulownia seedlings by micropropagation since 2004. Our exclusive Paulownia Clon InVitro 112® is recognized as one of the most adaptable and productive clones worldwide, validated through independent testing at the University of Castilla-La Mancha (Spain).

  • This unique clone thrives in a wide range of

    soils and climates across the world. Unlike other fast-growing species, it does not exhaust the land — instead, it does not impoverished soil but it contributes in its regeneration and long-term sustainability.

  • With its rapid growth, high biomass yield,

    and versatile wood quality, Paulownia Clon InVitro 112® is highly valued for renewable energy (biomass production), global reforestation projects, and sustainable forestry initiatives.

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Paulownia Varieties for Sustainable Cultivation Globally

The Paulownia tree is native to China and Southeast Asia and belongs to the Scrophulariaceae family. Globally, there are nine recognized species of Paulownia, with the most important being Paulownia fortunei, Paulownia elongata, and Paulownia tomentosa.

At In Vitro SL, we specialize in the  hybrid of   (Paulownia elongata × fortunei) that combine ultra-fast growth with high adaptability to different soils and climates across the world . Our exclusive In Vitro 112® clone (Paulownia elongata × fortunei) has been independently tested by the University of Castilla-La Mancha, confirming it as one of the best-performing hybrids for different agroclimatic conditions.

Unlike invasive species, our clone is non-invasive, enrichs the soil, and supports sustainable forestry and reforestation projects. Its rapid growth and straight, cylindrical trunks make it especially valuable for sustainable biomass & timber production.

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Paulownia Cultivation for Biomass, Reforestation & Wood Production

Paulownia trees are recognized as the fastest-growing species in the world. Under favorable conditions, they can reach up to 20 meters in height in just 5 years, making them one of the most productive and sustainable tree crops. Historically cultivated in Asia for their lightweight and durable wood, Paulownia is now expanding rapidly across the globe.

Our exclusive Paulownia Clon InVitro 112® (Paulownia elongata × fortunei) was developed in Catalonia and has been independently tested by the University of Castilla-La Mancha. Results confirm its exceptional adaptability, thriving under a wide range of soils and climates — from semi-arid regions to more temperate zones.

Proven characteristics of Paulownia Clon InVitro 112®
  • Highly adaptable to various ranges of temperatures.
  • Soil regeneration: non-invasive and non-exhaustive, improving soil conditions over time
  • Rapid growth: harvestable in as little as 3–4 (for posts), 5-6 for 25 cm DBH diameter 8-10 for +30 cm DBH timber or every 2–3 years for biomass 
  • High biomass yield: plantations in Spain produced 30–50 tons per hectare annually under Mediterranean Conditions  
  • Superior wood quality: 30% lighter than comparable hardwoods, resistant to warping, shrinkage, and deformation—known as “aluminium timber” in the furniture industry
  • Flowers: honey production, promotes biodiversity 
  • CO₂: large capacity for Carbon diaxide sequestration

*Production and climate adaptation data depend on agroclimatic conditions.*

  • 5 × 5 m density for production of +30 cm DBH (diameter at breast height) Logs in 8-10 years
  • 4 x 4 m density for production of 25 cm DBH logs in 5-6 years
  • 3 × 2 m density for biomass plantations

Thanks to its fast growth, high-yield timber, and renewable energy potential, Paulownia Clon InVitro 112® is now cultivated since 2004 not only in 4 continents for reforestation, and biomass energy projects.

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Sustainable and traceable Paulownia timber – capable of being FSC certified

Paulownia wood is one of the lightest commercial timbers in the world, with a density of 260- 310kg/m³. Despite its lightness, it offers a unique combination of strength, durability, and thermal insulation, making it highly valued both in traditional Asian uses and recently in modern applications at a global level such as furniture, construction, and renewable energy.

For centuries, Asian cultures have prized Paulownia for producing stable wood. The wood of the Paulownia Clon InVitro 112®, due to its sustainability, traceability, and rapid growth makes it increasingly important for worldwide industries, from furniture and plywood production to biomass energy and reforestation projects.

Key Characteristics of Paulownia Wood (Clon InVitro 112®)
  • Lightweight yet strong – pale color, resistant to wrapping, no odor
  • Quick drying – 60-80 days in natural air-drying 
  • Durability – excellent resistance relative to its weight
  • Low fracture coefficient – rarely deforms, cracks, or warps
  • Easy to work with—soft, easy to cut, free of silica (no tool damage)
  • Insulation—excellent thermal insulation properties
  • High ignition point that aids in preventing big fires
  • Furniture and carpentry – lightweight yet durable pieces
  • Construction and plywood – strong, light panels, modular construction with insulating properties
  • Biomass energy—a rapidly regenerating, sustainable energy source

Global reforestation and sustainable forestry projects—high adaptability and soil regeneration capacity and high CO₂ storage capacity.

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Paulownia Wood for Biomass Production in Europe

Paulownia trees are among the most promising species for biomass production, thanks to their ultra-fast growth, high annual yields, and superior sustainability compared to other wood trees such as poplar, eucalyptus, and willow.

Key Advantages of Paulownia Biomass (Clon InVitro 112®):

  • Fast-growing & renewable—up to 6 cutting cycles possible without replanting
  • High productivity – yields of 30–50 tons of biomass planted at 2×3 spacing per hectare per year under field-tested conditions in Spain
  • Efficient energy source – requires no pre-drying, with naturally low ash, chlorine, and potassium content
  • Sustainable cycles – harvesting can be done every 2–3 years once plantations are established

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Why the World is Turning to Paulownia Biomass

As demand for renewable energy rises under global carbon neutrality commitments, Paulownia Clon InVitro 112® stands out as a sustainable alternative to fossil fuels. Its advantages include:

  • Income diversification for farmers and landowners through high-yield energy crops
  • Soil regeneration benefits, unlike other intensive woody species
  • Contribution to the circular bioeconomy, supporting sustainable rural development
  • Suitability across Various soil conditions & climate conditions

With its proven adaptability, rapid regeneration, and superior energy properties, Paulownia Clon InVitro 112® is rapidly emerging as one of the world’s most efficient biomass crops.

Why does Paulownia Clon In Vitro 112® open new possibilities for CO₂ sequestration?

As the demand for credible climate solutions grows, Paulownia Clon In Vitro 112® stands out not only for fast biomass formation, but because its CO₂ sequestration can be measured and demonstrated. A methodology validated by UCLM (University of Castilla-La Mancha) links simple field metrics such as DBH (trunk diameter) to the total CO₂ stored in biomass, showing a steep, accelerating curve as trees get larger (as reflected in the graph).

Key advantages include:

  • Growth that translates into measurable CO₂: on the reference curve, stored CO₂ per tree increases sharply with DBH: 12 cm → ~42 kg, 20 cm → ~218 kg, 30 cm → ~673 kg, and 40 cm → ~1,460 kg CO₂ (cumulative per tree).

  • A yearly “rate” that improves over time: the annual sequestration rate is simply the difference between two measurements (e.g., this year’s DBH vs. last year’s). Because the curve is strongly increasing, annual CO₂ gains typically grow as the tree matures.

  • Plantation-scale measurement using LiDAR: building on the UCLM approach, we can now estimate sequestered CO₂ across any plantation using LiDAR scans, turning a 3D inventory into consistent, repeatable carbon tracking. In practice, when applied at plantation level (as the study recommends—on groups of trees and through repeated measurements), this enables robust monitoring; in our operational validation, using the same methodology consistently, we achieve up to ~96% accuracy in CO₂ estimation.

Thanks to this combination of high sequestration potential and credible measurement, Paulownia Clon In Vitro 112® is well positioned for the future of carbon monitoring (MRV), ESG reporting, and—where applicable—verified carbon programs that require transparent, repeatable data.

Paulownia Clon In Vitro 112®️ is a hybrid between Paulownia Elongata and Paulownia Fortunei, non-invasive, non-GMO, non-depleting, and selected by agronomist Josep M. Grau, owner of the company In Vitro SL.

Since 2017, we have had its unique genetic profile determined by the company All Genètics.

All our plants are cloned in vitro to ensure their genetic stability and health.

Paulownia Clon In Vitro 112®️ is an internationally registered trademark.

We have genetic testing protocols in place to identify fraud in the market and provide guarantees to consumers.

Marketing Paulownia Clone In Vitro 112®️ plants under another name or brand or using a brand to which one has no rights can be considered consumer fraud and could have legal consequences.

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