Scottish farmers are being warned to prepare for a possible summer drought. SEPA, the Scottish Environment Protection Agency has issued a water scarcity alert as 17 river catchments are so low. In England the Environment Agency says two thirds of rivers are below normal or lower for the time of year.

This week we're digging into the world of potato production - none of which would be possible, of course, without healthy, disease-free seed to get the crop started. Growing seed potatoes is a high-value, tightly regulated, specialist sector, and in the UK it's largely concentrated in Scotland where the disease risks are lower thanks to a cooler climate. Europe was a key market for Scottish seed, but Brexit changed all that. The EU's plant protection rules mean the trade is no longer allowed. However growers haven't given up on resuming exports and efforts continue.

The asparagus season is underway, traditionally, the spears of this tender crop are only picked from 23rd April, St George’s Day, to 21st June, the longest day of the year. It’s crucial for growers to have their best produce ready at the right time. Not only that, getting it to market and making sure it’s quality is perfect can pay real dividends when supplying top end restaurants and catering. We join one grower who welcomed the whole supply chain to his farm to see how the asparagus they buy from him, is grown.

Presenter = Charlotte Smith