image Apflebaumschnitt
Also I've only got to work up material images from the summer. Here is some material on columns apples. In fact, it works quite well and columns apples are much easier to maintain than you might think:
''The origin of all pillar apple trees goes to a random mutation of the apple cultivar 'McIntosh' back. The columnar habit of apple trees caused by the fruit skewers converted into side shoots, which are distributed very close to the trunk.
The fruits are formed directly on the trunk and for this reason is also the small floor space in the acreage needed. Columnar apples hardly need a cut and are very fertile, a thinning of the fruit [ie a yield reduction] is needed annually to alternation [return only every two years] to prevent. The columnar apple trees are usually monitored on a heavy base and therefore need only the growth phase in a post. A column apple tree can be pulled up to 3 or 4m''
[source text for info panel, garden show Villingen-Schwenningen, 2010, Exhibitor: Rose Tree and schools Anton Karle, Dautmeringen, www.karl-baumschulen.de].
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