Feverfew
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 7,779
Species recorded in Essex
1,113 species
Essex — county
Sweet Chestnut
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 7,703
Pignut
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 7,683
Dog-rose
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 7,677
Early Mining Bee
- Group
- Bees, wasps and ants
- Peak month
- May
- Records since 2000
- 7,566
Light Emerald
- Group
- Butterflies and moths
- Peak month
- June
- Records since 2000
- 7,541
Scots Pine
- Group
- Conifers
- Peak month
- August
- Records since 2000
- 7,517
Great Scented Liverwort
- Group
- Liverworts
- Peak month
- April
- Records since 2000
- 7,505
Phacelia
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 7,497
Petty Spurge
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 7,495
Dove's-foot Crane's-bill
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 7,440
European Spindletree
- Group
- Flowering plants
- Peak month
- October
- Records since 2000
- 7,415
Norfolk Hawker
- Group
- Dragonflies and damselflies
- Peak month
- June
- Records since 2000
- 7,361
False Brome
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 7,325
Marsh Woundwort
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 7,315
Hornschuch's Beard-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 7,311
Sixspot Cranefly
- Group
- True flies
- Peak month
- May
- Records since 2000
- 7,283
Jelly Ear
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 7,281
Brooklime
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 7,185
Knotgrass
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 7,179
Green Cellar Slug
- Group
- Molluscs
- Peak month
- April
- Records since 2000
- 7,133
Common Pottia
- Group
- Mosses
- Peak month
- October
- Records since 2000
- 7,130
Chaetozone zetlandica
- Group
- Worms (annelids)
- Peak month
- August
- Records since 2000
- 7,129
Bumble Bee Hover Fly
- Group
- True flies
- Peak month
- June
- Records since 2000
- 7,101
Bulrush
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 7,052
Wandering Snail
- Group
- Molluscs
- Peak month
- September
- Records since 2000
- 7,038
Sheep's Sorrel
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 7,014
Broom
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 7,008
Downy Emerald
- Group
- Dragonflies and damselflies
- Peak month
- June
- Records since 2000
- 6,965
Cuspidate Earth-moss
- Group
- Mosses
- Peak month
- November
- Records since 2000
- 6,950
Laurustinus
- Group
- Flowering plants
- Peak month
- March
- Records since 2000
- 6,936
Sulphur Tuft
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 6,926
Fish Leech
- Group
- Worms (annelids)
- Peak month
- October
- Records since 2000
- 6,917
Small Red Sedge
- Group
- Caddisflies
- Peak month
- May
- Records since 2000
- 6,888
Mottled Sedge
- Group
- Caddisflies
- Peak month
- May
- Records since 2000
- 6,879
Autumn Hawkbit
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 6,867
Common Grass Veneer
- Group
- Butterflies and moths
- Peak month
- August
- Records since 2000
- 6,856
Notch-horned Cleg
- Group
- True flies
- Peak month
- July
- Records since 2000
- 6,849
Great Grey Slug
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 6,803
Pea and Bean Weevil
- Group
- Beetles
- Peak month
- August
- Records since 2000
- 6,781
Whitish Feather-moss
- Group
- Mosses
- Peak month
- March
- Records since 2000
- 6,743
Gorse Shieldbug
- Group
- True bugs
- Peak month
- April
- Records since 2000
- 6,724
Athripsodes cinereus
- Group
- Caddisflies
- Peak month
- May
- Records since 2000
- 6,717
Brown Cubical Rot of Birch
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 6,697
Common Fleabane
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 6,682
Bulbous Buttercup
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 6,662
Greater Celandine
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 6,651
Field Forget-me-not
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 6,582