The varieties of common boxwood (Buxus sempervirens) and small-leaved boxwood (Buxus microphylla) can be found in most gardens in this country: the former originally comes from the Mediterranean region, but has also been native to Central and Western Europe for many centuries. In principle, both species are insensitive to cold and heat, but they quickly get sunburned in strong sunlight.

The boxwood burns quickly, especially in winter

Boxwood has brown leaves - what's the reason?

If the otherwise healthy boxwood suddenly develops brown leaves, there can be many reasons. Possible are about

  • a fungal infection
  • a pest infestation (especially by spider mites and boxwood gall midge)
  • Drought / lack of water supply
  • too much moisture / damp location / waterlogging

However, if only parts of the plant pointing in a certain direction turn brown, it is most likely a sunburn. This usually occurs on the south or south-east side because the solar radiation is particularly intense here.

How to treat a sunburn on the boxwood

Once the leaves and shoots have turned brown, they stay that way - and no longer take on the fresh green colour. In such a case, your only option is to cut out the dried areas. However, do not cut back the damaged areas in full sun or you will have the same problem again within a few days. It is better to wait until the sun has mostly disappeared in the evening or the sky has clouded over. You should then fertilize the box so that the holes created when cutting grow again as quickly as possible. Organic fertilizers such as compost and horn shavings are well suited for this purpose.(32.93€)

Avoid sunburn on the boxwood

Sunburn on boxwood occurs for a variety of reasons:

  • on very sunny, frosty days in winter
  • if a bucket book is placed in full sun in spring without preparation
  • during a dry and hot phase during the summer months

As a result, you can protect your book against burning with a few simple measures:

  • Keep your buchs in partial shade in winter.
  • Shade planted boxwood on sunny and frosty days.
  • Gradually get the bucket bush used to a sunny spot in spring.
  • Also ensure a balanced supply of water and nutrients.

You should also pay more attention to spider mites in sunny locations. They love dry and warm locations and multiply here extremely quickly.

tips

Brown or black leaves can also be a first indication of the dreaded boxwood dieback, a dangerous fungal disease.

Category:

Vegetable garden