Content
- Rosemary turns brown - What to do?
- Mostly too much moisture is to blame
- Brown needles due to pest infestation
- Tips & Tricks
Rosemary turns brown - What to do?
Actually, the rosemary is a fairly easy-care plant - if it were not so unpredictable. Wrong location, too little water or too much, too cold winter or too warm; It is difficult to please the sensitive shrub. Many Rosemary become brown after a while, mostly from the tips of the needles. But the twigs can dry up quickly, especially towards the end of winter.
Mostly too much moisture is to blame
When the needles turn brown and fall off, there are two possible reasons: Either the affected rosemary is too wet or too dry. So before you start treating the plant, you should find the right cause. In most cases, however, too much water should add to your rosemary, true to the old gardener wisdom "more plants have been cast to death than they are dried up". Excessively high humidity, too much irrigation water and, in particular, waterlogging cause the roots of rosemary to rot and finally to be unable to supply the above-ground parts of the plant. In this case, it only helps to dig up or repot the rosemary and replant it at a new place or pot in fresh substrate - of course, after the rotting roots have been pruned.
Brown needles due to pest infestation
However, brown needles can also have another cause, namely an infestation with pests such as spider mites, scale insects or triples. Also, fungal infections are quite common. The gardener usually notices a pest or fungal attack towards the end of winter, especially when the plant has wintered indoors. Cause is often too warm wintering and, as a result, too low humidity. Many pests love dry heating air and attack dry plants, which are also weakened by the hibernation and thus more vulnerable. Examine your rosemary carefully and look for small animals on the undersides of the leaves - these are often only a few millimeters long and not always visible to the naked eye.
Tips & Tricks
First, try to control the pests or fungi with biological agents. Chemical plant protection products (eg fungicides) must not be used on any plant intended for consumption! Against unwanted animals often helps a greater humidity, mildew and other fungi can be treated with a garlic.
IJA