It might be cold out there, but there is still fun to be had on the allotment. Every year I put in a perennial; this year it's blueberries. I chose Blue Pearl, recommended to me by fellow plot holders for its heavy cropping and, as our Katie is a blueberry fiend, it seemed like a plan. I dug big holes and put ericaceous soil 12 inches below the root ball so it should be a few years before they hit soil with lime in it. Even though they are hardy, the big freeze on its way means I've fleeced them until they settle in and the worst of the weather has passed. Now all we need is a little sun, some timely rain and blueberry pie it is.