posted 10 years ago
This posting is a little old but I've been doing a lot of research on columnar apples for myself and thought I would share that.
Richard, I think columnar apples will do what you want but you may need to irrigate to get much production with a high density planting. An advantage is they do not require staking as the trunk is usually stronger and the weight all close to the trunk. The true columnar ones are bred from the Wijcik McIntosh or its crosses. These generally will not produce many side limbs that need pruning but it can happen. Might depend on the rootstock or stress on the tree, bud damage, etc.
It appears you are in Poland so there are large number of varieties that you can choose. In my research, I have found at least 75 available in the EU. If you want variety in a small area, they are a good way to go. In the US, you can find 7 varieties for sale. It was a little better but the Stark Brothers nursery appears to have dropped the Ballerinas. They sold them under the Spire name here in the US.
I would not recommend the original Ballerina series (waltz, flamenco, bolero) since these were not the best in terms of disease resistance and some may not be great apples. There have been many additional crosses made to produce better, more disease resistant cultivars. I would caution that there are some apples marketed in Europe as columnar that are actually just weak growing spur type trees. Those may not need much pruning but they are not true columnar trees. In no particular order, look at the apples released from Giesenheim (Pom series and Cats series), the releases from University of Novi Sad in Serbia, the releases from Jaroslav Tupy at the Institute for Experimental Botany in Czech Repermies, and releases from Russia, Latvia, and Lithuania.
Regards