 Declared a Local Nature Reserve in 2006 by Sandy Town Council and designated an 'Urban Fringe' site, The Riddy is a species rich habitat, being described by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire as "an oasis of wild flowers, bird song and a wonderful view among a sea of arable fields".In the meadows many different grasses and other plants grow, such as cuckoo flower ("Cardamine pratensis").The pond, stream and ditches support aquatic plants, such as arrowhead ("Sagittaria sagittifolia"), celery-leaved buttercup ("Ranunculus sceleratus"), purple-loosestrife ("Lythrum salicaria"), water-plantain ("Alisma plantago-aquatica") and duckweed.