Reddish leaves on the boxwood have many causes
But before you go to watering can and Secateurs grab: some types of book tend to in the autumn brownish to reddish leaves. This is especially true for box trees in sunny locations, which are in this way on the winter prepare. In spring, the leaves turn green again on their own, so you don't have to make any further efforts.
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- Boxwood gets yellow leaves - causes and countermeasures
- Boxwood is losing leaves - causes and countermeasures
dryness
It looks different, however, if the discoloration after a long period of time Dry period occurs. This can be problematic for the Buchs, especially in winter, which is why you should plant the plants from time to time on frost-free days with a little water should provide. This is especially true for box trees that are in sunny and dry locations and for box trees cultivated in pots.
Nutrient / nitrogen deficiency
In addition to the winter drought caused a
Nutritional deficiency often reddish to orange leaves. Mainly a pronounced nitrogen deficiency causes this leaf discoloration, which mostly only appears during the winter months. Make sure you have a balanced supply of nutrients to avoid the phenomenon. In acute cases, supply the Buchs with a fast-acting liquid fertilizer.Boxwood rust
If, on the other hand, the orange-colored foliage did not appear in winter or spring, but in autumn, one could infection with the causative agent of boxwood rust, Puccinia buxi, may be the cause. This is shown by rust-red discolored spore beds on both the top and bottom of the leaves. Remove infected parts of the plant immediately and do not dispose of them on the compost but always with the household waste! In the case of a strong infestation, a suitable one can also be used fungicide can be used.
Tips
Even brown to black leaves can have similar causes. Some of them are harmless - like that one sunburn - others, however, threaten the entire boxwood population.