Wildflowers recorded in the reserve include bluebell, wood anemone, lily of the valley, red campion, winter aconite, snowdrop and crocus.
The narrow strip of woodland supports many mature trees including beech, horse chestnut, lime and a small stand of elm close to the Waterworks Road entrance.
Sweetbriar Road Meadows SSSI adjoin the marsh on the west and mostly industrial land lie to the east.
A small man-made pond in the reserve is used by breeding amphibians and provides a hunting ground for damselflies and is home to several species of dragonfly.
In the spring of 2012, the pond was filled in to stop the spread of the invasive New Zealand pigmy weed to the adjoining SSSI.