The retailer sources from Cobrey Farms, home of the Wye Valley Asparagus brand, where water capture is employed using a network of grass-lined waterways to channel rainfall into an on-farm reservoir for reuse. The crop is also described as "pesticide-residue free".
Farm partner John Chinn said: "We really want to drive the British asparagus industry forwards in the most sustainable and natural way."
Marks & Spencer sells 100g packs of UK asparagus tips, 200g packs of UK asparagus spears and 125g packs of UK extra-fine asparagus, each for £3.
It also claims to be the first retailer to stock this season's indoor-grown Jersey Royal potatoes. Grown by the Jersey Royal Company and packed by Manor Fresh, they sell at £3.99 for a 500g bag.