Stubbers Green Bog

Stubbers Green Bog ​is a privately owned site with no public access.

It is a small wetland site in Walsall comprising a shallow pool with fringing valley mire and swamp communities which have developed in a hollow, presumed to be caused by mining subsidence. The site overlies unstratified, gravely, boulder clay on top of Etruria Marl. This combination of habitats is poorly represented in the country and valley mire is scarce nationally.

Flora and fauna

The pool has an extensive growth of stonewort (Chara sp.). The mixed valley mire has formed around two sides of the pool. It consists of moderately thick peat with a scattered carpet of bog moss (Sphagnum sp.) covered with a rich growth of common cottongrass (Eriophorum angustifolium), bog pondweed (Potamogeton polygonifolius), common spike-rush (Eleocharis palustris), common fleabane (Pulicaria dysenterica) and rushes (Juncus spp). Locally uncommon plants include round-leaved sundew (Drosera rotundifolia), southern marsh-orchid (Dactylorhiza praetermissa), marsh arrowgrass (Triglochin palustris)and narrow buckler-fern (Dryopteris carthusiana).

The species-rich swamp is dominated by a mixture of great reedmace (Typha latifolia) and reed sweet-grass (Glyceria maxima). It grades in to a zone of damp continuous scrub dominated by goat willow (salix caprea) and sallow (salix cinerea). Acidic grassland has formed on part of the site where it slopes down to the bog. An area of tall herb vegetation dominated by reed canary-grass (Phalaris arundinacea) has developed in a damp area between the bog and the adjacent road.

Geographical features

Two drainage channels lead in to the basin on its northern side and are important in supplying some of the water to the site. In recent years the site has become dominated by willow scrub and the ecological value of the site is uncertain.