Wilden Marsh is a nature reserve of the Worcestershire Wildlife Trust.

It links to Spennells Valley nature reserve along Hoo Brook to the north-east, which also has marshland, and to the upper Hoo Brook pools beyond; areas linked in this way by corridors are beneficial for biodiversity.

The reserve also has reed beds, dry fields, and small woods of alder and willow.

[3] In the 1970s there was dredging of the River Stour, and a weir downstream was removed; this resulted in the marsh drying out, with an effect on plant life.

Rock ramps have been put in the river to reverse this, and there has been work on sluices and drainage ditches.