A friend of mine has bought a garden in Dresden recently. The previous owner has left a few strange bundles of sticks hanging around, but we can't figure out what their purpose is. Any idea?
Those are impromptu homes for beneficial insects, from tiny bees or wasps to earwigs. They are intended as shelter, especially for overwintering, and as place to lay their eggs.
Lots of purposes, including support for many plants (including small Eggplants, tomato plants etc - When we were growing Eggplants, they came with similar (but more expensive I suspect) sticks from the nursery. These sticks may have come with plants the previous owner bought ?
I've also used them to keep frost-cloth from touching the leaves of my plants.
This kind of structure (with hollow sticks) is intended for attracting Syrphidae because larvae are a great aphids predator.