Coombe Hill

Site of Special Scientific Interest · 51.6451, -2.3450

Condition (Natural England)

Unfavourable Recovering (1) Favourable (1)
UnitFeatureConditionArea (ha)Assessed
ST758941 Unfavourable Recovering 2.46 2012-11-08
ST763941 Favourable 13.06 2012-11-08

Geology & landscape

Geological Period: Jurassic · Rock Type: Chalk, Limestone

Description

Description Coombe Hill is of special interest for its large area of flower rich, unimproved limestone grassland. It is one of only a few recent sites for the nationally rare limestone woundwort Stachys alpina.* The site occupies moderately steep, mainly south facing slopes close to Wotton under Edge. It consists of a large, unimproved limestone grassland pasture, a small area of ungrazed grassland and a fringe of broadleaved woodland along the western boundary. The underlying geology is Inferior Oolite, a type of Jurassic limestone. The grassland is of the type characteristic of the Cotswolds, being an example of the upright brome tor grass Bromus erectus Brachypodium pinnatum plant community. A survey of 200 Cotswold grasslands found that Coombe Hill ranked in the top ten sites for the abundance of herbs in the turf. It is closely grazed, which is now unusual for a grassland of this type. Many such grasslands have been lost, not only through agricultural improvement but also from abandonment and cessation of grazing. In addition to upright brome and tor grass, other characteristic grasses include sheep's fescue Festuca ovina, meadow oat grass Avenula pratensis and quaking grass Briza media. Herbs typical of this community are present such as salad burnet Poterium sanguisorba, dwarf thistle Cirsium acaule, common rock rose Helianthemum nummularium, small scabious Scabiosa columbaria and wild thyme Thymus praecox. Other more locally restricted lime loving plants occur such as betony Betonica officinalis, horseshoe vetch Hippocrepis comosa and autumn gentian Gentianella amarella. A variety of orchid species are found here including pyramidal orchid Anacamptis pyramidalis, early purple orchid Orchis mascula and bee orchid Ophrys apifera. The diversity of the site is enhanced by patches of scrub, principally blackthorn Prunus spinosa and hawthorn Crataegus monogyna and areas of broadleaved woodland. The woodland canopy is dominated by ash Fraxinus excelsior, pedunculate oak Quercus robur and beech Fagus sylvatica with an understorey of hazel Corylus avellana. Coombe Hill is one of only three Sites of Special Scientific Interest in which the nationally rare limestone woundwort occurs. There is a cluster of past and present sites for limestone woundwort close to Wotton under Edge, one of only two areas in Britain where this plant is found. Limestone woundwort is a biennial or short lived perennial, which appears able to survive for long periods as seed in the ground. It is associated with woodland edge habitats and clearings and often appears after a period of disturbance or woodland management. It has declined in abundance since it was first discovered in this locality in 1897. The site also supports a variety of butterflies including the characteristic Cotswold grassland species, small blue Cupido minimus, chalk hill blue Polyommatus coridon and marbled white Melanargia galatheaa. * A plant specially protected by Schedule 8 of the Wildlife and Countryside Act.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
small blue Cupido minimus NT butterfly lycaenidae
chalkhill blue Polyommatus coridon VU butterfly lycaenidae
meadow oat grass Avenula pratensis Not listed in GB list grass poaceae
tor grass Brachypodium pinnatum LC grass poaceae
quaking grass Briza media VU grass poaceae
upright brome Bromus erectus Not listed in GB list grass poaceae
sheep's fescue Festuca ovina LC grass poaceae
pyramidal orchid Anacamptis pyramidalis LC herb orchidaceae
betony Betonica officinalis VU herb lamiaceae
dwarf thistle Cirsium acaule VU herb asteraceae
autumn gentian Gentianella amarella LC herb gentianaceae
rock roses Helianthemum nummularium VU herb cistaceae
horseshoe vetch Hippocrepis comosa VU herb fabaceae
bee orchid Ophrys apifera LC herb orchidaceae
early purple orchid Orchis mascula LC herb orchidaceae
salad burnet Poterium sanguisorba VU herb rosaceae
small scabious Scabiosa columbaria LC herb caprifoliaceae
limestone woundwort Stachys alpina EN herb lamiaceae
creeping thyme Thymus praecox Not listed in GB list herb lamiaceae
hawthorn Crataegus monogyna LC shrub rosaceae
blackthorn Prunus spinosa LC shrub rosaceae
hazel Corylus avellana LC tree corylaceae
beech Fagus sylvatica LC tree fabiaceae
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
Oak lutestring
Cymatophorina diluta
Endangered Quercus robur
Figure of eight
Diloba caeruleocephala
Endangered Crataegus spp., Prunus spinosa, Prunus spp.
The lappet
Gastropacha quercifolia
Endangered Crataegus monogyna, Prunus spinosa, Prunus spp.
Scarce vapourer
Orgyia recens
Endangered Corylus avellana, Crataegus spp., Fagus sylvatica, Prunus spinosa, Quercus spp.
Black hairstreak
Satyrium pruni
Endangered Prunus spinosa
Mouse moth
Amphipyra tragopoginis
Vulnerable Crataegus spp., Poterium sanguisorba
Northern brown
Aricia artaxerxes
Vulnerable Helianthemum nummularium
The sprawler
Asteroscopus sphinx
Vulnerable Corylus avellana, Crataegus spp., Fagus sylvatica, Fraxinus excelsior, Prunus spinosa, Prunus spp., Quercus spp.
Mottled umber
Erannis defoliaria
Vulnerable Corylus avellana, Crataegus spp., Fagus sylvatica, Prunus spinosa, Quercus spp.
Dingy skipper
Erynnis tages
Vulnerable Hippocrepis comosa
Marsh fritillary
Euphydryas aurinia
Vulnerable Scabiosa columbaria
Satyr pug
Eupithecia satyrata
Vulnerable Helianthemum nummularium
Grayling
Hipparchia semele
Vulnerable Festuca ovina
The lackey
Malacosoma neustria
Vulnerable Corylus avellana, Crataegus monogyna, Prunus spinosa, Prunus spp., Quercus spp.
Pale brindled
Phigalia pilosaria
Vulnerable Corylus avellana, Crataegus monogyna, Fraxinus excelsior, Prunus spinosa, Quercus spp.
Silver studded blue
Plebejus argus
Vulnerable Helianthemum nummularium, Hippocrepis comosa
Grizzled skipper
Pyrgus malvae
Vulnerable Poterium sanguisorba
Brown hairstreak
Thecla betulae
Vulnerable Prunus spinosa
Early moth
Theria primaria
Vulnerable Crataegus monogyna, Prunus spinosa, Quercus spp.
Pale eggar
Trichiura crataegi
Vulnerable Corylus avellana, Crataegus monogyna, Prunus spinosa, Quercus spp.
Oak hook-tip
Watsonalla binaria
Vulnerable Quercus robur
Flounced chestnut
Agrochola helvola
Near Threatened Crataegus monogyna, Quercus spp.
Beaded chestnut
Agrochola lychnidis
Near Threatened Crataegus monogyna
Grey chi
Antitype chi
Near Threatened Crataegus monogyna
Garden tiger
Arctia caja
Near Threatened Prunus spinosa
Light crimson underwing
Catocala promissa
Near Threatened Quercus robur
Dark crimson underwing
Catocala sponsa
Near Threatened Quercus robur
Small heath
Coenonympha pamphilus
Near Threatened Festuca spp.
Heart moth
Dicycla oo
Near Threatened Quercus robur
Large thorn
Ennomos autumnaria
Near Threatened Corylus avellana, Crataegus spp., Prunus spinosa, Prunus spp., Quercus spp.
September thorn
Ennomos erosaria
Near Threatened Fagus sylvatica, Quercus spp.
Dusky thorn
Ennomos fuscantaria
Near Threatened Fraxinus excelsior
Autumnal rustic
Eugnorisma glareosa
Near Threatened Festuca ovina
Grey pug
Eupithecia subfuscata
Near Threatened Betonica officinalis, Crataegus monogyna, Prunus spinosa
Double dart
Graphiphora augur
Near Threatened Crataegus spp., Prunus spinosa, Quercus spp.
Silver-spotted skipper
Hesperia comma
Near Threatened Festuca ovina
Silky wave
Idaea dilutaria
Near Threatened Helianthemum nummularium
Rosy minor
Litoligia literosa
Near Threatened Festuca ovina
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.

Plant communities

W21 — Hedgerow scrub, Mixed scrub

Crataegus monogyna-Hedera helix scrub

Matches 8 species from the description above: Brachypodium pinnatum, Corylus avellana, Crataegus monogyna, Fagus sylvatica, Fraxinus excelsior, Poterium sanguisorba, Prunus spinosa, Quercus robur

Hedera helix, Salix cinerea, Acer pseudoplatanus, Ilex aquifolium, Betula pendula, Corylus avellana, Fagus sylvatica, Quercus robur, Fraxinus excelsior, Malus sylvestris, Sorbus aria, Taxus baccata, Ulmus glabra, Ulmus procera, Sambucus nigra, Viburnum lantana, Euonymus europaeus, Cornus sanguinea, Juniperus communis, Ligustrum vulgare, Clematis vitalba, Rhamnus cathartica, Crataegus laevigata, Crataegus monogyna, Prunus spinosa, Juncus effusus, Plagiomnium undulatum, Brachythecium rutabulum, Kindbergia praelonga, Rhynchostegium confertum, Tamus communis, Heracleum sphondylium, Torilis japonica, Arum maculatum, Arctium minus, Cirsium arvense, Lonicera periclymenum, Moehringia trinervia, Silene dioica, Stellaria graminea, Stellaria holostea, Stellaria media agg., Calystegia sepium, Mercurialis perennis, Geranium robertianum, Iris foetidissima, Glechoma hederacea, Lamium purpureum, Origanum vulgare, Stachys sylvatica, Teucrium scorodonia, Allium ursinum, Hyacinthoides non-scripta, Circaea lutetiana, Rumex sanguineus, Anemone nemorosa, Ranunculus repens, Fragaria vesca, Geum urbanum, Potentilla sterilis, Poterium sanguisorba, Rosa arvensis, Rosa canina, Rubia peregrina, Rubus fruticosus agg., Galium aparine, Urtica dioica, Viola riviniana, Anisantha sterilis, Arrhenatherum elatius, Brachypodium pinnatum, Brachypodium sylvaticum, Bromopsis erecta, Dactylis glomerata, Elytrigia repens, Holcus lanatus, Holcus mollis, Poa trivialis, Asplenium scolopendrium, Pteridium aquilinum, Dryopteris filix-mas

W20 — Montane scrub

Salix lapponum-Luzula sylvatica scrub

Matches 2 species from the description above: Festuca ovina, Thymus praecox

Salix arbuscula, Salix cinerea, Salix lapponum, Salix myrsinites, Salix phylicifolia, Salix reticulata, Empetrum nigrum, Calluna vulgaris, Salix lanata, Vaccinium myrtillus, Vaccinium uliginosum, Carex atrata, Carex bigelowii, Carex binervis, Carex flacca, Luzula multiflora, Luzula sylvatica, Huperzia selago, Selaginella selaginoides, Aulacomnium palustre, Mnium hornum, Philonotis fontana, Plagiomnium undulatum, Rhizomnium punctatum, Dicranum bonjeanii, Dicranum majus, Dicranum scoparium, Fissidens adianthoides, Racomitrium lanuginosum, Calliergonell cuspidatum, Ctenidium molluscum, Hylocomium splendens, Hypnum callichroum, Hypnum cupressiforme, Palustriella commutatum, Plagiothecium denticulatum, Plagiothecium undulatum, Pleurozium schreberi, Ptilium crista-castrensis, Rhytidiadelphus loreus, Rhytidiadelphus squarrosus, Rhytidiadelphus triquetrus, Sanionia uncinata, Scorpidium revolvens, Thuidium tamariscinum, Atrichum undulatum, Polytrichastrum alpinum, Sphagnum capillifolium, Sphagnum fallax, Sphagnum girgensohnii, Sphagnum palustre, Sphagnum russowii, Sphagnum squarrosum, Sphagnum subnitens, Sphagnum teres, Barbilophozia barbata, Chiloscyphus polyanthos, Diplophyllum albicans, Lophocolea bidentata, Plagiochila porelloides, Ptilidium ciliare, Scapania undulata, Cladonia squamosa, Peltigera canina, Angelica sylvestris, Caltha palustris, Hieraclium spp., Saussurea alpina, Solidago virgaurea, Campanula rotundifolia, Succisa pratensis, Valeriana officinalis, Rhodiola rosea, Vaccinium vitis-idaea, Thymus praecox, Epilobium anagallidifolium, Dactylorhiza viridis, Euphrasia officinalis, Rhinanthus minor, Oxalis acetosella, Oxyria digyna, Polygonum viviparum, Rumex acetosa, Anemone nemorosa, Ranunculus acris, Thalictrum alpinum, Alchemilla alpina, Alchemilla glabra, Filipendula ulmaria, Geum rivale, Galium boreale, Galium saxatile, Saxifraga aizoides, Saxifraga hypnoides, Saxifraga oppositifolia, Saxifraga stellaris, Viola riviniana, Agrostis canina, Agrostis capillaris, Anthoxanthum odoratum, Deschampsia cespitosa, Deschampsia flexuosa, Festuca ovina, Festuca rubra, Nardus stricta, Dryopteris dilatata, Phegopteris connectilis

W22 — Hedgerow scrub, Mixed scrub

Prunus spinosa-Rubus fruticosus scrub

Matches 2 species from the description above: Corylus avellana, Prunus spinosa

Hedera helix, Acer campestre, Corylus avellana, Ulex europaeus, Prunus spinosa, Plagiomnium undulatum, Brachythecium rutabulum, Eurhynchium striatum, Kindbergia praelonga, Thuidium tamariscinum, Atrichum undulatum, Lophocolea bidentata, Achillea millefolium, Cardamine flexuosa, Lonicera periclymenum, Moehringia trinervia, Silene dioica, Silene uniflora, Stellaria media agg., Mercurialis perennis, Geranium robertianum, Stachys sylvatica, Teucrium scorodonia, Hyacinthoides non-scripta, Oxalis acetosella, Digitalis purpurea, Plantago lanceolata, Veronica chamaedrys, Armeria maritima, Rumex acetosa, Filipendula ulmaria, Geum urbanum, Rosa canina, Rubus fruticosus agg., Rubus idaeus, Galium aparine, Urtica dioica, Viola riviniana, Agrostis capillaris, Brachypodium sylvaticum, Dactylis glomerata, Festuca rubra, Holcus lanatus, Holcus mollis, Poa trivialis, Asplenium scolopendrium, Pteridium aquilinum, Dryopteris borreri, Dryopteris filix-mas