Lythrum salicaria
Other areas of the fen become drier during periods of dry weather and support a different range of plant life. Taller vegetation is more common, particularly reed "Phragmites australis" and meadowsweet "Filipendula ulmaria". Different plants are associated with this vegetation, increasing biodiversity to include species such as hemp agrimony "Eupatorium cannabinum", purple loosestrife "Lythrum salicaria" and great hairy willowherb "Epilobium hirsutum". Scrub and woodland vegetation has developed throughout the fens with sallow and alder predominant in these areas, although Blo' Norton Fen has some oak and ash woodland.