I would also concur with recommending Joan J as they taste superb. Mine are in a 1.2m x 4.8m raised edged bed and after a year or two the initial row has ‘disappeared’ and now the whole area has canes (which I do thin out). The other advantage I have noticed is that they seem to be contained within the bed and I don’t seem to get runners popping up in adjacent beds – something I see with the other two varieties I grow. The early variety I grow is Malling Minerva – these have taken a couple of years to get a reasonable yield but I find them not much earlier than Glen Ample which produces a higher yield of larger and better tasting fruits.
Hi – I put in Joan J they fruited the first year and the flavour, compared to the other ones I inherited which I think are Polka plus I went round tasting from other allotment plots, is the best in my opinion; heavy fruiters and large. In fact I got fed up picking them !!