Flower of Rosa moyesii variety Marguerite Hilling
Sequoia root zone
Young tree badly planted
Floor care 1


Because the floor is the solution.

In addition to sufficient soil volume, healthy and strong plants need an active soil.
A "Soilfactory" in which soil organisms constantly produce substances for the plant. The Soil is the Law.



The basis for healthy growth.

A habitat for many simple organisms that know how to recycle organic matter (e.g. leaves, dead wood, fallen deer). Besides organic matter, air and moisture are necessary for this.
Soil loosening

A secret of nature

Microorganisms are essential for survival.

Stay on footpaths to protect the fragile biological soil crust. These tiny organisms are critical to all life in the desert [not just there]. (National Park Service)

Tulip tree at the Bear Fountain in Hamm

Tulip tree 

Tulip tree, May 2012, before site improvement measures with the Vogt Geo Injector and a delicious cocktail of materials.

- small leaves
- light green
- dry shoots (signs of dieback)

Tulip tree 

Tulip tree, beginning of June 2013, one year after the measures.

- small leaves
- dark green
- No dry shoots
- hardly any growth

Tulip tree

Tulip tree, end of May 2014, two years after the measures.

- relatively large leaves
- dark green
- no dry shoot tips
- Shoot length increases

Tulip tree

Tulip tree, end of May 2015, three years after the measures.

- vital leaves
- no dry shoot tips
- he grows

The location

Tree slice with standing water
Root growth in the levelling layer

The site, in our opinion, does not enjoy the attention that corresponds to its importance. This is also difficult to understand when one considers that the tree has to help itself every time it is injured and that its vitality is a factor in its future prognosis by the controlling authority.The possible measures for site improvement are extensive and require construction activities of varying complexity, e.g. new construction, soil replacement and soil improvement. In principle, the goal of all measures is always the same: to create as much root space as possible.

The most important factor here is the soil air, also called pore volume, which is optimally reduced for the production of traffic areas with dyn. compaction equipment. In terms of vegetation, exactly the opposite becomes the duty, as much pore volume as possible must be created, because the root grows the path of least resistance and there it is always right. Only there is AIR and growth-friendly conditions. Only after the most important factor, the AIR, has been increased in the existing soil, can other means have a positive effect.

This is soil for vegetation

What is soil

Soil consists of a mixture of:

  • mineral materials (weathered rocks, sand, clay, etc.)
  • Soil water
  • Soil air
  • organic substances (living and dead)


Depending on the soil type (also characterised by: cold/warm, light/heavy), different soil amendments are successful and require a certain know-how.

Organic diagram

Actually, all soil components are important.
However, soil organisms have a special significance, as their activity defines the performance of the soil for our plants and for clean groundwater.


Loosening the soil with air creates this basis. An initial ignition, through which the soil organisms can multiply quickly again.

Soil organisms

1 litre of biologically active soil contains the following employees for soil improvement:

  • 2 earthworms
  • 7 Centipedes
  • 14 other insects
  • 150 mites
  • 200 springtails
  • 50,000 nematodes
  • 10,000,000 protozoa
  • 1,000,000,000 algae
  • 4,000,000,000 mushrooms
  • 6,000,000,000 bacteria

Source aid

Soil reconnaissance from a vegetation perspective

To better diagnose growth problems and prepare site improvement measures, we carry out simple exploratory procedures. This includes the exploratory drill, digging measures or the light pile driver.

The Pürckhauer is an important instrument that we can use for soft to semi-solid cohesive soils or strongly cohesive mixed soils up to moist non-cohesive soils (maximum grain size < D/5). It is used to determine the layer structure, to take soil samples from any horizon, e.g. 0-30 cm, 30-60 cm and 60-90 cm, and to determine the water conditions in the soil (water content, layer and ground water). The impact resistance also gives a feeling for the density of the soil.

When taking the sample, you have to look very carefully, because if the top centimetre or less of soil is smeared and dense, the loose soil pack underneath won't help much. The gas exchange is restricted. As a result, the root can no longer breathe properly and may even die. Without the possibility to breathe, the supply of nutrients is irrelevant.

Young tree dead
Waterlogging Horizon
Enclosure for loosening the soil over a wide area
Use of the air lance

Soil loosening at the surface

With our air lance we usually loosen the soil to a depth of 20 cm, more is possible without any problems. It is also ideal for mixing in soil improvers such as humus. 3.5 m³ of air are shot into the soil per minute at 2.5 times the speed of sound. This sounds dangerous, but the air jet is "soft" due to turbulence and does not damage roots or pipes.

As part of the site improvement of trees, for example, the existing lawn can be "cut back". Perennials are then planted. This herbaceous vegetation results in a completely different biodiversity. The foliage can safely be left lying around and a small nutrient cycle is created with a better soil structure and better storage capacity for water and nutrients. Later on, insects and everything else that gives us pleasure can be found.

Soil loosening in depth

With the Vogt Geo Injector, we go one step further than with surface loosening. The injection pipe is pneumatically driven into the soil, compacted soil layers are penetrated and loosened with compressed air discharges. The soil expands noticeably upwards, it is virtually lifted. Loosening the soil is logically accompanied by an increase in volume. Probably also with a certain compaction, but in my opinion this is of little relevance. The loosening depth is usually 50 cm, but 80 cm is also possible. So we are not talking about deep loosening of 1.50 m and deeper, which makes sense for new plants. We are talking about a gentle procedure in the existing stock. By loosening the soil, the most important thing has been applied. Air. The pore volume has been increased, the roots can grow again. Efficiently we still dose supporting grain, mycorrhiza, humic acid and other soil additives for a good soil function. Granulate caverns ensure the supply of oxygen from the air and dispose of carbon dioxide from root respiration.

Aims of our work:

Improvement of the air balance - effective revitalisation of sterile soils - structure building in compacted soils - improvement of water storage - improvement of nutrient sorption - supply of nutrients.

Sustainability through functioning soil. That's why we use organics. Fodder for the Edaphon!

terra fit system mixtures
with multiple effects through special individual products, such as supporting grain, amino acids, brown algae, humic acid and others, which can have an acidic or alkaline effect on plant physiology.

Site- and crop-specific supplements or stand-alone components:
Mycorrhiza (highly active with 320000 units and helper bacteria)
Alginure (formation of clay-humus complexes, uronic acid formation, trace elements)
Oscorna Soil Activator (organic soil additive)
Oscorna Hornamon (organic tree fertiliser, long-term fertiliser function)
Orus plant active (plant-organic compounds for special cases)
Vulkatec Lava (tree substrates, drainage material and aggregates)

Construction sites:

Ventilation in the tree environment:

Hamm, garden monument, 2 tulip trees, young tree
Hamm, spa gardens, 1 ash tree
Hagen-Emst, 1 hornbeam, old tree
Hagen-Emst, 1 blood beech, old tree
Schwerte, 2 Jap. maples
Halver, 1 cherry
Wilnsdorf, 2 beech trees, 1 oak tree
Iserlohn, 1 chestnut, old tree
Iserlohn, 1 beech, old tree
Lüdenscheid, 2 cedars
Lüdenscheid, 1 maple
Iserlohn, 1 maple tree, natural monument
Hagen, 1 wing nut, natural monument
Iserlohn, robinia, raised bed site
Solingen, Blade Museum, 2 beech trees Natural monument
Castle Burg, 1 lime tree, natural monument
Solingen, various trees in climbing garden
Solingen, 5 linden trees in front of the town hall
Meerbush, Oak, Yew, Parrotia, Gleditschie
Hagen, 1 Ginkgo, natural monument
Radevormwald, 1 blood beech, almost a natural monument
Hagen-Dahl, 4 blood beech trees, natural monument
Düsseldorf, Kolpingplatz, Red Oaks

Eliminate waterlogging on lawns:

Solingen, green area Vorspel, 600 m²
Dortmund, house garden, 300 m²
Dortmund, house garden 200 m²