A 100 % plant-based, biodegradable hydrogel that turns ordinary soil into a long-lasting water reservoir.

Retentis® Bio is the first durable hydrogel made entirely from wood-derived lignin. Once mixed into the root zone, its granules swell during rain or irrigation to capture and hold water—and then release it slowly to your plants when the soil begins to dry. Over three to five years (depending on soil texture), Retentis® Bio not only supports continuous moisture supply but ultimately decomposes into humus, boosting organic matter and soil structure for the long haul.

Key Features & Benefits

• 100 % biodegradable, wood-based
  Sourced from lignin, a by-product of the pulp industry, Retentis® Bio leaves no synthetic residues.

• Long-term activity (3–5 years)
  Delivers sustained performance across multiple growing seasons.

• Certified organic & FiBL-listed
  Approved for both conventional and organic farming without restrictions.

• Up to 40 % irrigation savings
  Reduces watering frequency and protects young trees, ornamentals, vegetables and turf from drought stress.

• Soil-fertility enhancer
  Transforms sandy or depleted soils into productive substrates by decomposing into humus.

• Slow-release nutrient carrier
  Absorbs fertilizers and micronutrients, then re-distributes them gradually, cutting leaching losses.

• Cost-efficient
  Lowers expenditure on water, fertilizers, energy and labor.

How to Use
Blend Retentis® Bio directly into planting holes, potting mixes or topsoil at the recommended rate (e.g. 1–2 % by weight). Water in thoroughly to activate the hydrogel granules. For container-grown plants, combine with your substrate before filling pots; for field or landscape plantings, incorporate into the back-fill soil around roots.

Applications
Ideal for tree planting, bedding plants, urban green spaces, agricultural fields, vineyards, container gardens and any setting where resilient soil moisture management is essential.

Give your soil—and your plants—the natural edge they deserve with Retentis® Bio Water Storage.

Recommended Application Rates