Zachower Str. 4
14669 Ketzin OT Tremmen
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Biological plant protection

The tree nursery is buzzing and humming between the rows of trees - lacewings, ladybugs, butterflies and a wide variety of bee species can be found here. These beneficial insects help us to keep the plants free of harmful insects - in a natural way. To boost their population in the nursery, we sow flowering undersown plants between the rows of trained trees.

The concept of this sustainable management was developed during a multi-year research project with the Beuth University of Applied Sciences in Berlin - entitled: “Development of a system for biological plant protection management to ensure high plant quality in the production chain of woody plants for urban areas”.



Beneficial insects in our tree nurserye


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The ladybug

The ladybug feeds on aphids, consuming 50-100 per day. A female ladybug lays 500-800 small, yellowish, oval eggs in the middle of aphid colonies. After a few days, small gray-blue larvae hatch. During the four to six weeks of development (four stages), one larva eats up to 500 aphids. By the way: Some native ladybug species specialize in scale insects or fruit tree spider mites. The two- and twenty-spot ladybug disdains fleshy food and feeds exclusively on fungal mycelium, e.g. mildew fungi. This is why it is also a beneficial insect.


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The hoverfly

It looks like a wasp, but is completely harmless. Their larvae feed on aphids and blood aphids, caterpillars, beetle larvae and spider mites, which are harmful to plants. However, they are harmless to humans because they have neither a sting nor a proboscis. The female hoverflies lay their eggs in the middle of aphid colonies. After a few days, several hundred larvae hatch, which feed on around 80 aphids a day.

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The bee

Bees fly from flower to flower in search of nectar. In doing so, they pollinate our plants with the pollen they collect. This ensures that the flowers turn into fruit and the plants continue to reproduce. The flowers and herbs in our undersown crops provide bee colonies with sufficient food - all year round. This gives them security and stimulates the colony's growth. The more food there is, the more new bees hatch. This in turn ensures their survival in winter.

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