Finalsan® Neudorff® natural total herbicide
Natural total herbicide for organic and ecological growing
Finalsan® is a natural total herbicide based on pelargonic acid, which quickly and effectively destroys weeds, grasses, mosses, and algae. Visible results appear within just a few hours, even at lower temperatures. The product breaks down rapidly in the soil, leaving no residues, and is safe for people, pets, and bees – once dry, treated areas can be re‑entered immediately. It is suitable for use in gardens, terraces, paths, and under trees, but not on lawns, as it kills all green plant parts it touches.
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What it can do: Reliably eliminates a wide range of weeds (dandelion, plantain, nettle, bindweed, thistle, etc.), grasses, mosses, and algae. Works quickly, even in cool weather.
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What it cannot do: It is non‑selective – it kills all plants it contacts, so it is not suitable for lawns. It does not destroy underground parts of perennial weeds (roots, rhizomes), so some species may regrow.
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What to use instead: For selective weed control in lawns, specialized herbicides (e.g. Bofix) are used. For long‑lasting control of perennial weeds, systemic herbicides (e.g. glyphosate) are more effective, though not natural.
Finalsan® contains pelargonic acid (nonanoic acid) – a fatty acid naturally occurring in plants. It acts by contact, disrupting cell membranes in green plant tissues, leading to rapid desiccation and death. Effects are visible within hours. In the soil, pelargonic acid quickly degrades into natural substances (carbon dioxide and water), leaving no residues. The product is registered as a total herbicide and approved for use in organic farming.
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Application: dilute the concentrate to a 16.6% solution (100 ml product in 500 ml water) and spray directly onto weeds at approx. 30–40 ml/m². Maximum of 4 applications per season at 21–40 day intervals. Plants must be dry at the time of spraying.
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Manufacturer / authorization holder: W. Neudorff GmbH KG (distributed in the Czech Republic by AgroBio Opava, s.r.o.).
Goods are shipped all over Europe. For Russia and U.K. and for further details please read about SHIPPING OPTIONS HERE.
Are you interested in a serious discount for orders NOV-FEB? Check your options here.
THE PRICES INCLUDE VAT of 15%. For quick conversion you can use 1 CZK = approx. 0.04 EUR
- STANDARD QUALITY - Plants of this group are 1st class quality with number of branches and overall density adequate to their size and age, considering they were container grown.
- DE LUXE QUALITY - This label guarantees a luxurious quality of manually selected plants that, compared to their height and age, are exceptionally dense and beautiful.
- EXTRA - These plants are usually mature and bigger specimens with exceptional overall appearance.
- STANDARD (as described in the plant form) means a tree with a trunk of 190-210 cm and a crown at the top, unless specified differently. The commercial size for trees is their girth measured in the height of 1m from ground.
- HOBBY - These plants are of the same quality as our standard-quality plants but younger and therefore cheaper.
- SHRUB - a woody plant with branches growing bushy from the ground level.
- HALF-STANDARD or MINI-STANDARD - a small tree with shorter trunk, its size is usually specified.
- FEATHERED - These are trees with branches growing already from the base of the trunk and up along the stem.
- GRASSES and PERENNIALS - Sizes given usually read the diameter of the pot or the clump, as specified.
