Postlebury Wood

Site of Special Scientific Interest · 51.1846, -2.3706

Also within

Somerset County

Condition (Natural England)

Unfavourable Recovering (1)
UnitFeatureConditionArea (ha)Assessed
ST741428 Unfavourable Recovering 86.86 2010-11-25

Birds & fish recorded

Birds

SpeciesSeason
buzzard Breeding
sparrowhawk Breeding

Description

Description Postlebury Wood is a large and relatively undisturbed woodland of considerable antiquity, developed on poorly drained Oxford Clays. A double bank and roadway bordering part of the wood probably represents the Anglo Saxon boundary. The first records of the woodland are from documents dated 1182, shortly after which it was incorporated in the Royal Forest of Selwood. The wood is largely composed of oak Quercus robur, ash Fraxinus excelsior and hazel Corylus avellana, with alder Alnus glutinosa alongside the small streams. Recent management has resulted in a high forest structure, although it was formerly coppiced and has been used for charcoal production in the past. A wide range of trees and shrubs occur, including maple Acer campestre, hornbeam Carpinus betulus, birch Betula sp, holly Ilex aquifolium, aspen Populus tremula and sallow Salix sp, with dogwood Cornus sanguinea, spindle Euonymus europaeus and guelder rose Viburnum opulus on the more base rich soils. The ground flora is well developed, ranging from communities of bluebell Hyacinthoides non-scripta, bracken Pteridium aquilinum, foxglove Digitalis purpurea and wood sorrel Oxalis acetosella on drier and more acid soils, to those of wood spurge Euphorbia amygdaloides, dog's mercury Mercurialis perennis and pendulous sedge Carex pendula on wetter and basic soils. Plants of particular interest recorded include Solomon's seal Polygonatum multiflorum, greater butterfly orchid Platanthera chlorantha, bird's nest orchid Neottia nidus-avis, broad leaved helleborine Epipactis helleborine and autumn crocus Colchicum autumnale. At least two species present, herb paris Paris quadrifolia and woodruff Galium odoratum are generally confined to ancient woodland. Postlebury Wood supports large populations of homostyle primroses, a plant found in only one area outside south east Somerset. These plants, which are unique in that they represent a self fertile form of a normally self sterile species, are of international significance in providing opportunities for genetic studies. Research involving four universities has been carried out in Somerset since 1940. The woodland has a wide range of breeding birds, including buzzard, sparrowhawk, six species each of warbler and tit and the three British woodpecker. Mammals occurring in the wood include badgers, rose, muntjac and fallow deer. A number of uncommon butterfly species have been recorded.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
sparrowhawk Accipiter nisus NT (Breeding) bird-hawk falconidae
buzzard Buteo buteo LC (Breeding) bird-hawk falconidae
bracken Pteridium aquilinum LC fern dennstaedtiaceae
autumn crocus or meadow saffron Colchicum autumnale NT herb colchicaceae
foxglove Digitalis purpurea LC herb plantaginaceae
broad-leaved helleborine Epipactis helleborine DD herb orchidaceae
wood spurge Euphorbia amygdaloides LC herb euphorbiaceae
woodruff Galium odoratum LC herb rubiaceae
bluebell Hyacinthoides non-scripta LC herb liliaceae
dog's mercury Mercurialis perennis LC herb euphorbiaceae
birdsnest orchid Neottia nidus-avis VU herb orchidaceae
wood sorrel Oxalis acetosella LC herb oxalidaceae
herb paris Paris quadrifolia VU herb melanthiaceae
greater butterfly orchid Platanthera chlorantha NT herb orchidaceae
Soloman's seal Polygonatum multiflorum LC herb liliaceae
pendulous sedge Carex pendula LC sedge cyperaceae
dogwood Cornus sanguinea LC shrub cornaceae
spindle tree Euonymus europaeus LC shrub celastraceae
gelder rose Viburnum opulus LC shrub caprifoliaceae
field maple Acer campestre LC tree aceraceae
alder Alnus glutinosa LC tree salicaceae
hornbeam Carpinus betulus LC tree betulaceae
hazel Corylus avellana LC tree corylaceae
ash Fraxinus excelsior LC tree oleaceae
holly Ilex aquifolium LC tree aquifoliaceae
aspen Populus tremula LC tree salicaceae
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
Oak lutestring
Cymatophorina diluta
Endangered Quercus robur
Dark bordered beauty
Epione vespertaria
Endangered Populus tremula
Maple pug
Eupithecia inturbata
Endangered Acer campestre
Heath fritillary
Melitaea athalia
Endangered Digitalis purpurea
Scarce vapourer
Orgyia recens
Endangered Alnus glutinosa, Corylus avellana, Quercus spp.
The sprawler
Asteroscopus sphinx
Vulnerable Corylus avellana, Fraxinus excelsior, Populus spp., Quercus spp.
Broom moth
Ceramica pisi
Vulnerable Pteridium aquilinum
Scarce chocolate-tip
Clostera anachoreta
Vulnerable Populus spp., Populus tremula
Mottled umber
Erannis defoliaria
Vulnerable Acer campestre, Carpinus betulus, Corylus avellana, Populus tremula, Quercus spp.
Satyr pug
Eupithecia satyrata
Vulnerable Galium spp.
Bedstraw hawk-moth
Hyles gallii
Vulnerable Galium spp.
The lackey
Malacosoma neustria
Vulnerable Corylus avellana, Quercus spp.
Pale brindled
Phigalia pilosaria
Vulnerable Alnus glutinosa, Cornus sanguinea, Corylus avellana, Fraxinus excelsior, Populus spp., Quercus spp.
Early moth
Theria primaria
Vulnerable Quercus spp.
Pale eggar
Trichiura crataegi
Vulnerable Corylus avellana, Populus spp., Quercus spp.
Oak hook-tip
Watsonalla binaria
Vulnerable Quercus robur
No common name
Zeugophora turneri
Vulnerable Populus tremula
Flounced chestnut
Agrochola helvola
Near Threatened Quercus spp.
Grey chi
Antitype chi
Near Threatened Digitalis purpurea
Purple emperor
Apatura iris
Near Threatened Populus tremula
Garden tiger
Arctia caja
Near Threatened Pteridium aquilinum
Minor shoulder-knot
Brachylomia viminalis
Near Threatened Populus tremula
Light crimson underwing
Catocala promissa
Near Threatened Quercus robur
Dark crimson underwing
Catocala sponsa
Near Threatened Quercus robur
The sallow
Cirrhia icteritia
Near Threatened Populus spp.
Dingy mocha
Cyclophora pendularia
Near Threatened Alnus glutinosa
Heart moth
Dicycla oo
Near Threatened Quercus robur
Kentish glory
Endromis versicolora
Near Threatened Alnus glutinosa
Large thorn
Ennomos autumnaria
Near Threatened Alnus glutinosa, Corylus avellana, Populus spp., Quercus spp.
September thorn
Ennomos erosaria
Near Threatened Quercus spp.
Dusky thorn
Ennomos fuscantaria
Near Threatened Fraxinus excelsior
Autumnal rustic
Eugnorisma glareosa
Near Threatened Galium spp., Hyacinthoides non-scripta
Grey pug
Eupithecia subfuscata
Near Threatened Populus tremula
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
Dark-barred twin-spot carpet
Xanthorhoe ferrugata
Near Threatened Galium spp.

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.

Plant communities

W25 — Bracken scrub

Pteridium aquilinum-Rubus fruticosus underscrub

Matches 6 species from the description above: Digitalis purpurea, Fraxinus excelsior, Hyacinthoides non-scripta, Mercurialis perennis, Pteridium aquilinum, Quercus robur

Hedera helix, Acer pseudoplatanus, Fagus sylvatica, Quercus robur, Fraxinus excelsior, Sambucus nigra, Ulex europaeus, Crataegus monogyna, Prunus spinosa, Luzula multiflora, Mnium hornum, Brachythecium rutabulum, Kindbergia praelonga, Angelica sylvestris, Conopodium majus, Heracleum sphondylium, Arum maculatum, Cirsium arvense, Lonicera periclymenum, Silene dioica, Stellaria holostea, Mercurialis perennis, Geranium robertianum, Glechoma hederacea, Teucrium scorodonia, Hyacinthoides non-scripta, Chamerion angustifolium, Circaea lutetiana, Digitalis purpurea, Rumex acetosa, Anemone nemorosa, Ficaria verna, Potentilla erecta, Rosa arvensis, Rosa canina, Rubus fruticosus agg., Rubus idaeus, Galium aparine, Galium mollugo sens.lat., Galium saxatile, Urtica dioica, Viola riviniana, Agrostis capillaris, Anthoxanthum odoratum, Arrhenatherum elatius, Dactylis glomerata, Festuca rubra, Holcus lanatus, Holcus mollis, Poa trivialis, Pteridium aquilinum, Dryopteris dilatata, Dryopteris filix-mas