Riddles Wood

Site of Special Scientific Interest · 51.8202, 1.0881

Also within

Essex County

Condition (Natural England)

Unfavourable Recovering (1)
UnitFeatureConditionArea (ha)Assessed
TM129180 Unfavourable Recovering 37.94 2011-11-09

Geology & landscape

Landscape processes: Glacial

Description

Area,37.3 hectares 92.2 ac Description Riddles Wood contains some of the best examples in Essex of chestnut coppice, derived from ancient pedunculate oak hazel and pedunculate oak hornbeam woodland. The soils are varied, being derived from glacial sands and gravels in the west and London Clay in the east. This results in a diversity of woodland types and a rich and varied ground flora, including several uncommon Essex species. The canopy consists mainly of pedunculate oak Quercus robur, over a coppice layer of sweet chestnut Castanea sativa with a scattering of hazel Corylus avellana and a small area of hornbeam Carpinus betulus along the eastern edge. There is a small amount of ash Fraxinus excelsior, mainly confined to the damper London Clay soils, while birch Betula spp. and aspen Populus tremula occur as invasive species of the young coppice. Holly Ilex aquifolium and wild service Sorbus torminalis occur locally, mainly along the boundary of the wood. The ground flora is dominated by bramble Rubus sp., bracken Pteridium aquilinum, or in places by greater stitchwort Stellaria holostea. In an area of poor, gravelly soil in the north west, wood sage Teucrium scorodonia is co-dominant with bracken, creeping soft grass Holcus mollis and honeysuckle Lonicera periclymenum. Other herb species include moschatel Adoxa moschatellina, yellow archangel Lamiastrum galeobdolon and common cow wheat Melampyrum pratense. Species of special note are wood small reed Calamagrostis epigejos, Butcher's broom Ruscus aculeatus and broad leaved helleborine Epipactis helleborine, soft Shield fern Polystichum setiferum and the rare orpine Sedum telephium. The plant communities have benefited from recent coppice management. Additional habitats are provided by a system of rides and a small pond.

Species mentioned

English name
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Latin name
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IUCN / Red List Type Family
soft shield-fern Polystichum setiferum LC fern dryopteridaceae
bracken Pteridium aquilinum LC fern dennstaedtiaceae
wood small-reed Calamagrostis epigejos LC grass poaceae
creeping soft grass Holcus mollis LC grass poaceae
moschatel Adoxa moschatellina LC herb adoxaceae
broad-leaved helleborine Epipactis helleborine DD herb orchidaceae
yellow archangel Lamiastrum galeobdolon LC herb lamiaceae
honeysuckle Lonicera periclymenum LC herb caprifoliaceae
common cowwheat Melampyrum pratense VU herb orobanchaceae
orpine Sedum telephium Not listed in GB list herb crassulaceae
common stitchwort Stellaria holostea LC herb carophyllaceae
wood sage Teucrium scorodonia LC herb lamiaceae
butchers-broom Ruscus aculeatus LC shrub liliaceae
hornbeam Carpinus betulus LC tree betulaceae
sweet chestnut Castanea sativa LC tree fagaceae
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
Heath fritillary
Melitaea athalia
Endangered Melampyrum pratense, Teucrium scorodonia
Scarce vapourer
Orgyia recens
Endangered 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 Carpinus betulus, Castanea sativa, Corylus avellana, Lonicera periclymenum, Populus tremula, Quercus spp.
Marsh fritillary
Euphydryas aurinia
Vulnerable Lonicera periclymenum
White admiral
Limenitis camilla
Vulnerable Lonicera periclymenum
The lackey
Malacosoma neustria
Vulnerable Corylus avellana, Quercus spp.
Pale brindled
Phigalia pilosaria
Vulnerable 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.
Beaded chestnut
Agrochola lychnidis
Near Threatened Stellaria 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
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.
Heart moth
Dicycla oo
Near Threatened Quercus robur
Large thorn
Ennomos autumnaria
Near Threatened Corylus avellana, Populus spp., Quercus spp.
September thorn
Ennomos erosaria
Near Threatened Quercus spp.
Dusky thorn
Ennomos fuscantaria
Near Threatened Fraxinus excelsior
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

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 7 species from the description above: Fraxinus excelsior, Holcus mollis, Lonicera periclymenum, Pteridium aquilinum, Quercus robur, Stellaria holostea, Teucrium scorodonia

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