Hodgemoor Wood

Site of Special Scientific Interest · 51.6329, -0.6047

Condition (Natural England)

Favourable (1)
UnitFeatureConditionArea (ha)Assessed
SU966935 Favourable 103.04 2014-05-07

Geology & landscape

Rock Type: Chalk

Birds & fish recorded

Birds

SpeciesSeason
nightingale Breeding
nightjar Breeding
sparrowhawk Breeding
woodcock Breeding

Description

Description Hodgemoor Woods constitutes one of the largest tracts of semi natural broadleaved woodland remaining in the Buckinghamshire Chilterns. The woods are situated on an unusually wide and contrasting range of soil types derived from mottled clays, sands and gravels associated with the Reading Beds and tertiary gravels and calcareous clays over the Middle Chalk. The combination of extensive areas of semi natural woodland of varying age on such a wide range of soils is exceptional in the Chiltern Hills and has generated a wide range of woodland plant communities and a characteristically diverse woodland flora. Much of the woodland is of ancient origin, with records of its existence dating back to the 13th and 14th centuries. There has, however, been considerable fluctuation in the extent of woodland over the centuries, and secondary semi natural woodland of 18th, 19th and 20th century origin surround the ancient core of the site. The structure of the woodland is extremely varied and includes large areas of ancient coppice stools of oak, beech and hornbeam with occasional old standards of oak; high forest stands of oak and birch; plantation stands of beech and other native broadleaved species such as oak and cherry; and some mixed and coniferous plantations. An extensive system of tracks and paths has been maintained creating many open sunny rides. The range of soil types, the complex history of the woods and the low intensity of past management has led to Hodgemoor Wood possessing an extremely wide range of woodland trees and shrubs, including whitebeam Sorbus aria, wild service tree Sorbus torminalis, maple Acer campestre, wych elm Ulmus glabra, aspen Populus tremula, crab apple Malus sylvestris and yew Taxus baccata. This range of species is considered to have been typical of the Chilterns woodlands before the widespread establishment of beech plantations. On the drier acidic soils oak and beech coppice are found, while the heavier clay soils support areas of oak/bracken/bramble woodland. Where the underlying chalk influences the soils, patches of ash/maple/dog's mercury woodland occur. The drier soils within the wood support a heathy woodland vegetation of bracken Pteridium aquilinum and bramble Rubus fruticosus, with wood rushes Luzula pilosa and L. forsteri and honeysuckle Lonicera periclymenum. Cow wheat Melampyrum pratense, trailing St John's wort Hypericum humifusum and heather Calluna vulgaris are present in areas recently coppiced. The wetter flushes and muddy rides contain wood sedge, remote sedge and pale sedge Carex sylvatica, Carex remota and C. pallescens, the latter being of limited occurrence in Buckinghamshire. On the chalkier soils a wide range of plants of base rich woodland soils may be found including abundant dog's mercury Mercurialis perennis, along with its typical associates yellow archangel Lamiastrum galeobdolon, bluebell Hyacinthoides non-scripta, sweet woodruff Galium odoratum, pignut Conopodium majus, primrose Primula vulgaris, twayblade Neottia ovata and early purple orchid Orchis mascula. This diverse array of woodland plants is typical of ancient woodland and indicative of along history of traditional management. Other plants recorded in the wood include coral root Cardamine bulbifera, a nationally uncommon species particularly characteristic of the Chilterns; lady fern Athyrium filix-femina, narrow buckler fern Dryopteris carthusiana and the hawkweed Hieracium virgultorum, all uncommon in Buckinghamshire. The wood is known to hold populations of white admiral Limenitis camilla, purple hairstreak Favonius quercus and green hairstreak Callophrys rubi. A nationally rare jewel beetle Agrilus biguttatus, a species associated with old oaks in ancient woodland, has been recorded from the woods. The breeding birds of Hodgemoor Woods include many woodland species such as woodcock, hawfinch, sparrowhawk and both green and great spotted woodpecker. Clearings and coppice compartments in the driest heathy parts of the wood have supported breeding nightingale and nightjar in recent decades.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
no common name Agrilus biguttatus LC beetle buprestidae
hawfinch Coccothraustes coccothraustes EN (Breeding) bird-finch fringillidae
sparrowhawk Accipiter nisus NT (Breeding) bird-hawk falconidae
nightjar Caprimulgus europaeus LC (Breeding) bird-nightjar caprimulgidae
nightingale Luscinia megarhynchos VU (Breeding) bird-robin muscicapidae
woodcock Scolopax rusticola LC (NonBreeding), VU (Breeding) bird-woodcock scolopacidae
great spotted woodpecker Dendrocopos major LC (Breeding) bird-woodpecker picidae
green hairstreak Callophrys rubi LC butterfly lycaenidae
purple hairstreak Favonius quercus LC butterfly lycaenidae
white admiral Limenitis camilla VU butterfly nymphalidae
lady-fern Athyrium filix-femina LC fern woodsiaceae
narrow buckler fern Dryopteris carthusiana LC fern dryopteridaceae
bracken Pteridium aquilinum LC fern dennstaedtiaceae
coral root Cardamine bulbifera LC herb brassicaceae
pignut Conopodium majus LC herb apiaceae
woodruff Galium odoratum LC herb rubiaceae
a hawkweed Hieracium virgultorum Not listed in GB list herb asteraceae
bluebell Hyacinthoides non-scripta LC herb liliaceae
trailing St John's wort Hypericum humifusum LC herb hypericaceae
yellow archangel Lamiastrum galeobdolon LC herb lamiaceae
honeysuckle Lonicera periclymenum LC herb caprifoliaceae
common cowwheat Melampyrum pratense VU herb orobanchaceae
dog's mercury Mercurialis perennis LC herb euphorbiaceae
common twayblade Neottia ovata NT herb orchidaceae
early purple orchid Orchis mascula LC herb orchidaceae
primrose Primula vulgaris LC herb primulaceae
bramble Rubus fruticosus LC herb rosaceae
hairy wood-rush Luzula pilosa LC rush juncaceae
remote sedge Carex remota LC sedge cyperaceae
wood sedge Carex sylvatica LC sedge cyperaceae
bell heather or ling Calluna vulgaris NT shrub dwarf ericaceae
field maple Acer campestre LC tree aceraceae
crab apple Malus sylvestris LC tree rosaceae
aspen Populus tremula LC tree salicaceae
whitebeams Sorbus aria CR tree rosaceae
yew Taxus baccata LC tree taxaceae
wych elm Ulmus glabra LC tree ulmaceae

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
Dark bordered beauty
Epione vespertaria
Endangered Populus tremula
Maple pug
Eupithecia inturbata
Endangered Acer campestre
The lappet
Gastropacha quercifolia
Endangered Malus spp.
Duke of Burgundy
Hamearis lucina
Endangered Primula vulgaris
Shoulder-striped clover
Heliothis maritima
Endangered Calluna vulgaris
Heath fritillary
Melitaea athalia
Endangered Melampyrum pratense
Glanville fritillary
Melitaea cinxia
Endangered Hieracium spp.
Scarce vapourer
Orgyia recens
Endangered Rubus fruticosus, Ulmus spp.
White-letter hairstreak
Satyrium w-album
Endangered Ulmus glabra, Ulmus spp.
Mouse moth
Amphipyra tragopoginis
Vulnerable Hieracium spp.
The sprawler
Asteroscopus sphinx
Vulnerable Populus spp., Ulmus spp.
Broom moth
Ceramica pisi
Vulnerable Calluna vulgaris, Pteridium aquilinum, Rubus fruticosus, Ulmus spp.
Scarce chocolate-tip
Clostera anachoreta
Vulnerable Populus spp., Populus tremula
Mottled umber
Erannis defoliaria
Vulnerable Acer campestre, Lonicera periclymenum, Populus tremula, Ulmus spp.
Marsh fritillary
Euphydryas aurinia
Vulnerable Lonicera periclymenum
Satyr pug
Eupithecia satyrata
Vulnerable Calluna vulgaris, Galium spp., Hieracium spp., Hypericum spp.
Bedstraw hawk-moth
Hyles gallii
Vulnerable Galium spp.
White admiral
Limenitis camilla
Vulnerable Lonicera periclymenum
True lover's knot
Lycophotia porphyrea
Vulnerable Calluna vulgaris
The lackey
Malacosoma neustria
Vulnerable Rubus fruticosus, Ulmus spp.
Pale brindled
Phigalia pilosaria
Vulnerable Populus spp., Ulmus glabra
Silver studded blue
Plebejus argus
Vulnerable Calluna vulgaris
Grizzled skipper
Pyrgus malvae
Vulnerable Rubus fruticosus
Pale eggar
Trichiura crataegi
Vulnerable Calluna vulgaris, Malus sylvestris, Populus spp., Rubus fruticosus
No common name
Zeugophora turneri
Vulnerable Populus tremula
Flounced chestnut
Agrochola helvola
Near Threatened Calluna vulgaris, Ulmus spp.
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
Dusky-lemon sallow
Cirrhia gilvago
Near Threatened Ulmus glabra
The sallow
Cirrhia icteritia
Near Threatened Populus spp., Ulmus glabra
Grey scalloped
Dyscia fagaria
Near Threatened Calluna vulgaris
Large thorn
Ennomos autumnaria
Near Threatened Populus spp., Ulmus spp.
Autumnal rustic
Eugnorisma glareosa
Near Threatened Calluna vulgaris, Galium spp., Hyacinthoides non-scripta
Grey pug
Eupithecia subfuscata
Near Threatened Populus tremula
Double dart
Graphiphora augur
Near Threatened Ulmus spp.
Broad-barred white
Hecatera bicolorata
Near Threatened Hieracium spp.
Weaver's wave
Idaea contiguaria
Near Threatened Calluna vulgaris
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 5 species from the description above: Conopodium majus, Hyacinthoides non-scripta, Lonicera periclymenum, Mercurialis perennis, Pteridium aquilinum

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