Out and Plunder Woods

Site of Special Scientific Interest · 52.1661, 0.4202

Condition (Natural England)

Unfavourable Declining (2)
UnitFeatureConditionArea (ha)Assessed
TL656547 Unfavourable Declining 29.07 2015-09-15
TL665547 Unfavourable Declining 9.49 2015-09-15

Geology & landscape

Rock Type: Glacial Till

Landscape processes: Glacial

Description

Area, 28 hectares 70 ac Description These woodlands are of ancient origin and hold plant and animal communities of three main association types, namely wet ash maple, which is the dominant type, together with hazel ash and lowland pedunculate oak hazel types. The woods are situated over chalky Boulder Clay which further influences the components of the associated plant and animal communities. Such woodland types are restricted to the heavy soils of lowland England and have undergone a rapid decline in their extent during the latter half of this Century. The Out and Plunder Woods have remained relatively unmodified since the Middle Ages and as such stable conditions have endured which allow for the maintenance of rich and diverse plant and animal communities. Of note is the presence of the oxlip Primula elatior, a plant which is restricted to ancient Boulder Clay woodlands and occurs mainly in Cambridgeshire and Essex. The site comprises two main woodland blocks, Out Wood and Sparrows Grove and Plunder Wood, all of which have been traditionally managed as coppice with standards. Dominant tree species are ash Fraxinus excelsior and field maple Acer campestre, which occur as mature coppice. Oak Quercus robur standards are present throughout the wood and oak coppice occurs in Plunder Wood. The ‘small coppice’ of hazel Corylus avellana provides understorey structure together with shrubs such as wild privet Ligustrum vulgare, guelder rose Viburnum opulus, dogwood Cornus sanguinea and spindle Euonymus europaeus. The ground flora is typically of dog’s mercury Mercurialis perennis, bluebell Hyacinthoides non-scripta and oxlip Primula elatior, together with areas dominated by low bramble Rubus fruticosus and bluebell, with herb Robert Geranium robertianum, sweet violet Viola odorata and early dog violet Viola reichenbachiana. Other herbs include water avens Geum rivale, hairy wood rush Luzula pilosa, wood sedge Carex sylvatica and wood speedwell Veronica montana. A dry, acid influence occurs where patches of sand and gravel lienear the surface. This is unusual for the county and supports less common flora including a variety of mosses such as Leucobryum glaucum and Pleuridium subulatum. The grassy rides provide additional habitat diversity and further enhance the value of this well structured woodland for bird, invertebrate and other animal life.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
herb Robert Geranium robertianum LC herb geraniaceae
water avens Geum rivale LC herb rosaceae
bluebell Hyacinthoides non-scripta LC herb liliaceae
dog's mercury Mercurialis perennis LC herb euphorbiaceae
oxlip Primula elatior LC herb primulaceae
bramble Rubus fruticosus LC herb rosaceae
wood speedwell Veronica montana LC herb plantaginaceae
sweet violet Viola odorata LC herb violaceae
early dog violet Viola reichenbachiana LC herb violaceae
large white moss Leucobryum glaucum LC moss dicranales
taper leaved earth moss Pleuridium subulatum LC moss dicraneles
hairy wood-rush Luzula pilosa LC rush juncaceae
wood sedge Carex sylvatica LC sedge cyperaceae
dogwood Cornus sanguinea LC shrub cornaceae
spindle tree Euonymus europaeus LC shrub celastraceae
wild privet Ligustrum vulgare LC shrub oleaceae
gelder rose Viburnum opulus LC shrub caprifoliaceae
field maple Acer campestre LC tree aceraceae
hazel Corylus avellana LC tree corylaceae
ash Fraxinus excelsior LC tree oleaceae
common oak Quercus robur LC tree fagaceae

Insects to look out for

These moths, butterflies and beetles are known to feed on plants recorded at this site, and carry a notable UK conservation status — but a host-plant being present doesn't mean the insect has actually been recorded here. Treat this as "worth watching for," not a confirmed sighting.

SpeciesStatusVia host-plant
High brown fritillary
Fabriciana adippe
Critically Endangered Viola odorata
Pearl-bordered fritillary
Boloria euphrosyne
Endangered Viola odorata
Oak lutestring
Cymatophorina diluta
Endangered Quercus robur
Maple pug
Eupithecia inturbata
Endangered Acer campestre
Scarce vapourer
Orgyia recens
Endangered Corylus avellana, Quercus spp., Rubus fruticosus
The sprawler
Asteroscopus sphinx
Vulnerable Corylus avellana, Fraxinus excelsior, Quercus spp.
Broom moth
Ceramica pisi
Vulnerable Rubus fruticosus
Mottled umber
Erannis defoliaria
Vulnerable Acer campestre, Corylus avellana, Quercus spp.
The lackey
Malacosoma neustria
Vulnerable Corylus avellana, Quercus spp., Rubus fruticosus
Pale brindled
Phigalia pilosaria
Vulnerable Cornus sanguinea, Corylus avellana, Fraxinus excelsior, Quercus spp.
Grizzled skipper
Pyrgus malvae
Vulnerable Rubus fruticosus
Early moth
Theria primaria
Vulnerable Quercus spp.
Pale eggar
Trichiura crataegi
Vulnerable Corylus avellana, Quercus spp., Rubus fruticosus
Oak hook-tip
Watsonalla binaria
Vulnerable Quercus robur
Flounced chestnut
Agrochola helvola
Near Threatened Quercus spp.
Light crimson underwing
Catocala promissa
Near Threatened Quercus robur
Dark crimson underwing
Catocala sponsa
Near Threatened Quercus robur
Heart moth
Dicycla oo
Near Threatened Quercus robur
Large thorn
Ennomos autumnaria
Near Threatened Corylus avellana, Quercus spp.
September thorn
Ennomos erosaria
Near Threatened Quercus spp.
Dusky thorn
Ennomos fuscantaria
Near Threatened Fraxinus excelsior
Autumnal rustic
Eugnorisma glareosa
Near Threatened Hyacinthoides non-scripta
Double dart
Graphiphora augur
Near Threatened Quercus spp.
Clay fan-foot
Paracolax tristalis
Near Threatened Quercus spp.
Common fan-foot
Pechipogo strigilata
Near Threatened Quercus robur
Frosted green
Polyploca ridens
Near Threatened Quercus robur

Host-plant data: Cook et al. (2025), Traits data for the butterflies and macro-moths of Great Britain and Ireland, 2024, UK Centre for Ecology & Hydrology / Butterfly Conservation; and Padovani et al. (2020), Database of Insects and their Food Plants (DBIF), UK Centre for Ecology & Hydrology (both Open Government Licence). Contains data supplied by UK Centre for Ecology & Hydrology.