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Quality criteria – Bark products 2018

Quality criteria – Composted Bark 2018


Quality criteria for bark products

Bark mulch for landscape gardening

The wood-processing industry and tradespeople usually only use trunks from which the bark has been stripped. However, the stripped-off raw bark is renewable feedstock of high ecological value for landscape gardening. It is collected, shredded in humus and soil operations, sifted and later fermented. This is how bark mulch and bark humus are made – from nature for nature and the garden!

Bark mulch

Bark mulch is used as organic ground cover in landscape gardening and is ideal for this purpose. Because just as bark protects deciduous and evergreen trees from all kinds of factors, bark mulch protects the planted soil.

Advantages of bark mulch:

  • reduced water consumption due to lower irrigation requirements
  • fewer weeds, as weed growth is suppressed
  • makes gardening easier
  • more uniform soil moisture levels
  • better protection from drying out
  • reduced exposure to heat and cold
  • increased activation of soil biology
  • improved mineral supply to plants

In other words, enjoy your attractive garden. The uniform brown mulched surface looks neat and clean and reduces the time required for gardening.

Requirements and recommendations for the use of bark mulch:

Apply a layer, about 5-7 cm thick, of RAL-certified bark mulch on a largely weed-free surface. Apply horn meal (40-80 g/m²) around shallow rooted plants (such as perennials) before mulching to ensure adequate nitrogen supply. Leave a distance of 5 cm from the trunks of young trees.

Bark humus for landscape gardening

Bark humus is made from fine bark that is subjected to a controlled rotting process for a long period of time. Bark humus is a valuable source of humus and nutrients that improve the soil.

Advantages of bark humus:

  • improved soil fertility
  • improved supply of water, air and heat
  • stronger plant growth

Requirements and recommendations when using bark humus:

Apply a layer, 0.5 – 1.0 cm thick, of RAL-certified bark humus in early spring or at some point during the growing season and work it into the top soil. When planting trees or shrubs, add up to 30 vol. % of bark humus to the planting media and mix well.


Formation processes of  bark products on quality criteria