Hedges and trees in winter

Garden Life
Hedges and trees are to be found at the edges of many properties. They are a popular form of viewing protection against curious passers-by. If, however, a road lies along the edge of the property, road salt may get into the bushes and damage them.
The salt gets into the trunks, shoots and roots of hedges and trees through water spray. Once it melts, the salt water is adsorbed by the roots. The consequences of this can be, amongst other things, poor growth or even the death of the plants.

Detecting damage

Typical symptoms of road salt damage are brown branch tips, mainly close to the ground. However, they are not always easy to spot. Water is drawn from the plants, and the leaves often go brown, starting at the edges. Road salt acts like over-fertilisation; the plant obtains too many nutrients and therefore the water is removed from it.

Preventing damage

In order to prevent salt damage, wooden palisades or other barriers can be dug in at the front of the hedge to protect it. Another method of avoiding salt damage is to water the plant copiously when the ground is not frozen.

Measures in case of damage

If salt damage has already occurred, the only remedy is to water copiously. A thorough shower after the winter also helps the plant to regenerate and to flush off the salt.
Those wishing to permanently avoid problems with salt damage should take less salt-sensitive plants. The snowberry, for example, is considered relatively salt-tolerant. Conifers such as the thuja are considered particularly sensitive plants. These react particularly strongly to road salt.