Tummelberries freeze well and hold their shape when thawed.
The bush’s canes need support.
Tummelberries were developed by the Scottish Crop Research Institute, which also developed the Tayberry which Tummelberries resemble. The Institute crossed a Tayberry seedling with another Tayberry seedling, making Tummelberries, like their parents, a blackberry / raspberry cross. One of the goals was to produce a more cold-hardy bush than the Tayberry, but critics complain some of the flavour got lost in attaining the goal.
Tummelberries are named after the Tummel River in Perthshire, Scotland.