Tree raspberry - you can never have too many raspberries

About the benefits of raspberries Each of us knows firsthand, because it is this berry that is considered the No. 1 remedy during the treatment of colds, and not a single sweet tooth will refuse sweet and healthy berries. Raspberry bushes are quite popular for growing in personal plots. She is unpretentious, can grow in the most remote places, areas under fences or rooms.
There is also tree raspberry or the Tarusa raspberry tree, which is distinguished by its special fertility and yours decorative appearance. The height of the raspberry tree reaches about two meters and it does not require support to support its branches. Tree raspberries have leaves that are velvety to the touch, during the flowering period they are strewn with flowers, and during the fruiting period they have fairly large elongated berries that practically dot the bush, but this is only with proper care.
In care Tree raspberries, although not whimsical, require compliance with certain rules for successful growth and fruiting. Despite the fact that tree raspberries are quite frost-resistant, in regions where winter temperatures drop below -30 degrees, tree branches must be bent under the snow. At the same time, it is advisable to do this in advance, at the beginning of autumn, while the branches are flexible and not brittle.
For good fertility, raspberries should be feed manure, humus or peat.
A distinctive feature of this raspberry variety is that it is quite resistant to pests and diseases, but even if trouble occurs, this does not affect fertility in any way.
Comments
Interesting and tempting - raspberry tree! (tree raspberry) Any gardener will be interested in such a plant.
But the information is vague, there are no necessary details, namely:
1. What is this - a perennial plant or an ordinary biennial plant, just the shoots are formed like a tree?
2. In what climatic conditions is cultivation possible?
3. What are the names of tree raspberry varieties?
4. What is the average yield per bush or m2?
5.Where can I buy planting material?