Content
- Red maple turns green - what to do?
- For many fanethorns, greening is normal
- For greening many causes come into question
- Inappropriate location
- Wrong pH in the soil
- High nitrogen fertilization
- Tips
Green leaves on the red maple can be quite normal
Red maple turns green - what to do?
There are numerous species of maple for the garden or for the Kübelhaltung, which are mainly cultivated because of their beautiful, red-colored foliage. The two most well-known representatives are probably the red fan maple (Acer palmatum), which exists in numerous different kinds, as well as the Rotahorn originating from North America (Acer rubrum). While the Japanese maple usually delights with red foliage all summer long, the red maple shows its color splendor only in the autumn. For both, however, a greening can be used for different reasons.
For many fanethorns, greening is normal
First of all: For many varieties of the red Japanese maple, it is perfectly normal for the tree to show only budding and in autumn a red foliage color. In summer, the leaves are green by nature. These varieties include u. a. such popular variants as 'Kotohime' or 'Deshojo'. Only a few red fanaticals show intense red color throughout the growing season. To the rather lesser fanatical fanatics u. a. 'Atropurpureum', 'Fireglow', 'Bloodgood' and various Dissectum varieties (which include the popular 'Garnet').
For greening many causes come into question
On the other hand, a greening course, of course, have different causes, which are usually found in a little suitable location, in too much or too little sunlight and / or incorrect fertilization. These lead both in the Japanese Red Maple to an early greening as well as the lack of autumn color in the Canadian Red Maple.
Inappropriate location
At least for a weak or even completely absent autumn color is usually responsible for missing or poor sunlight. Basically, the rule applies to maples: The more the sun is laughing from the sky, the more intense the foliage turns. However, this is by no means a general rule, because some maple species prefers a semi-shady location and responds to too direct solar radiation with a greening.
Wrong pH in the soil
Another reason for the greening of the foliage is to look in the wrong pH. Maples prefer a slightly acidic to neutral background and turn green as soon as it tilts into the basic. In such a case, it helps to supplement the soil with acidic rhododendron earth.
High nitrogen fertilization
Last but not least, too intensive fertilization - especially with nitrogen - leads to fading of the foliage. Maples, of whatever kind and variety, should be supplied only moderately and preferably with organic fertilizers.
Tips
Unfortunately, the greening can also occur naturally in older specimens - younger, red-leaved maples are often more intense in color and sometimes lose their color over the years.