In the more open areas of the lower valley vegetation includes meadowsweet and great willowherb.

Meadowsweet and Great Willowherb flourish.

Great willowherb (Epilobium hirsutum)

The reed beds are dominated by great willowherb and common reed with other species present including blunt-flowered reed and water figwort.

It is commonly known as the great willowherb, great hairy willowherb or hairy willowherb.

Wetland habitats here contain mature White Willow, rushes, reedmace, marsh thistle, pendulous sedge, and great willowherb.

The more open areas support plants such as Common Valerian, Great Willowherb, Meadowsweet and Pendulous Sedge.

The main feature of the Marsh is Club-rush which forms dense stands together with Bulrush, Great Willowherb and Common Reed.

Plants such as Angelica, Great Willowherb, Amphibious Bistort, Betony, Gipsywort and Yellow Flag Iris are all common to the area.

Next to the poor running waters near Ulriksdal Palace are Intermediate Water-starwort and further upstream two metre tall Great Willowherb is found along the shores as is instances of Blue Water-Speedwell.

It was misidentified as Great Hairy Willowherb in contemporary floras.

It is commonly known as the great willowherb, great hairy willowherb or hairy willowherb.

Plants include cotton sedge, bog moss and sphagnum, great hairy willowherb, water figwort, flag iris, cross-leaved heath, bog rosemary, cranberry and sundew; alder trees and willow predominate.

Different plants are associated with this vegetation, increasing bodiversity to include species such as hemp agrimony Eupatorium cannabinum, purple loosestrife Lythrum salicaria and great hairy willowherb Epilobium hirsutum.

This species is quite similar to Epilobium hirsutum, but the flowers are much smaller.

The larvae feed on Epilobium species, including Epilobium hirsutum.

Epilobium hirsutum (I)

Great willowherb (Epilobium hirsutum)

Epilobium hirsutum is a flowering plant belonging to the willowherb genus Epilobium in the family Onagraceae.

Another, and more extensive, fen type is tall fen, dominated by common reed, Phragmites australis, and great willow herb, Epilobium hirsutum.

British NVC community OV26 (Epilobium hirsutum community) is one of the open habitat communities in the British National Vegetation Classification system.

Different plants are associated with this vegetation, increasing bodiversity to include species such as hemp agrimony Eupatorium cannabinum, purple loosestrife Lythrum salicaria and great hairy willowherb Epilobium hirsutum.

The larvae feed on Circaea x intermedia, Circaea lutetiana, Chamerion angustifolium, Epilobium collinum, Epilobium hirsutum, Epilobium montanum and Epilobium parviflorum.

The larvae have been recorded feeding on Chamerion angustifolium, Epilobium hirsutum, Epilobium montanum, Epilobium palustre and Oenothera species, but Epilobium hirsutum is the main food plant.

The swamp area of the site has Lesser Pond-sedge Carex acutiformis as the dominant plant species, with other species such as Great Reedmace Typha latifolia and Great Willowherb Epilobium hirsutum found in the area.