Nesting places are difficult for wild bees to find, because unfortunately in our modern world many of these possibilities have been lost. Since wild bees fly only 50–300 m away from their nest, they also absolutely need flowers as food and water in the area.
There are several ways to support the busy bees:
But not all flowers are suitable. Only plants with unfilled flowers help bees. Double flowers, such as Geraniums, cultivated dahlias or garden chrysanthemums are decorative but offer little or no food for the bees. For example, lavender, thyme, various fruit trees or stone clover are more suitable.
Especially on hot days, wild bees find it difficult to find suitable water points. With a flat container like a clay bowl, it is very easy to build a potions for bees. Fill the bowl with water and place stones and some moss in it as landing spots for the bees.
Two thirds of all wild bees nest underground. These wild bees need sunny, preferably slightly sandy spots with sparse vegetation, which make digging easy for the animals. There they build brood tubes and lay their eggs individually in brood cells. Such "sand islands" can be created well in little used garden areas.
With so-called “bee hotels” we give bees a home in our modern world.
You can easily build a bee hotel yourself:
Hollow plant stems ...
Bundle (bamboo, reeds, marsh, hogweed, angelica, knotweed ...) with a diameter of 2-10 mm and a length of 8-20 cm. Important: the end of the stems should be closed - so cut the stems as possible behind the knot (thickening) so that the end has a natural finish.
... and hardwood blocks ...
Drill holes of different widths with a diameter of 3-10 mm in a dry piece of hardwood (e.g. oak, ash or beech - no softwood!). It is best to always drill across the annual rings. The aisles should reach 5-12 cm deep into the wood and be locked at the back. Smooth out the holes on the outside so that no splinters obstruct the entrance.
... result in a hotel!
The individual parts can now be combined in a wooden box. This must be protected from rain by a roof and placed in a place that is particularly sunny in the morning. Do not use pine cones or straw - enemies of wild bees move in there. For example, ear pinchers that steal the collected pollen from the bees.