Shepherd's-purse
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 9,963
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- Species by county
- Halton
Species recorded in Halton
375 species
Halton — county
Field Horsetail
- Group
- Ferns and horsetails
- Peak month
- June
- Records since 2000
- 9,954
Pendulous Sedge
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 9,859
Hemlock Water-dropwort
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 9,856
Yellow-rattle
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 9,710
Common Liverwort
- Group
- Liverworts
- Peak month
- April
- Records since 2000
- 9,606
Japanese Rose
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 9,179
Meadow Crane's-bill
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 9,089
Common Field-speedwell
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 8,966
Common Mallow
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 8,810
Guelder-rose
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 8,622
Goat Willow
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 8,468
Hedge Mustard
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 8,158
Alexanders [Smyrnium olusatrum]
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 8,145
Rainbow weed, Spiked loosestrife, Purple-loosestrife
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 8,145
Queen Anne's Lace
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 8,098
Bristly Oxtongue
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 8,049
Lesser Burrdock
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 7,906
Kentish Snail
- Group
- Molluscs
- Peak month
- May
- Records since 2000
- 7,788
Scots Pine
- Group
- Conifers
- Peak month
- August
- Records since 2000
- 7,517
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
Norway Maple
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 7,211
Knotgrass
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 7,179
Broad-leaved Willowherb
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 7,139
Bulrush
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 7,052
Raspberry
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 6,958
Lecidella lichen
- Group
- Lichens
- Peak month
- March
- Records since 2000
- 6,871
Procumbent Pearlwort
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 6,809
Iceland Gull
- Group
- Birds
- Peak month
- January
- Records since 2000
- 6,693
Common Fleabane
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 6,682
Wych Elm
- Group
- Flowering plants
- Peak month
- May
- Records since 2000
- 6,614
Bearbind
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 6,477
Common Rough Woodlouse
- Group
- Crustaceans
- Peak month
- April
- Records since 2000
- 6,413
Wild Privet
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 6,265
Hard Rush
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 6,248
Sticky Mouse-ear
- Group
- Flowering plants
- Peak month
- April
- Records since 2000
- 6,100
Sycamore Tarspot
- Group
- Fungi
- Peak month
- October
- Records since 2000
- 5,798
Agrimony
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 5,759
Greenish Oedemera
- Group
- Beetles
- Peak month
- June
- Records since 2000
- 5,714
Perennial Sow-thistle
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 5,567
Large Gray Willow
- Group
- Flowering plants
- Peak month
- July
- Records since 2000
- 5,535
Redshank [plant]
- Group
- Flowering plants
- Peak month
- August
- Records since 2000
- 5,442
Snowdrop
- Group
- Flowering plants
- Peak month
- February
- Records since 2000
- 5,071
Holly Leaf Gall Fly
- Group
- True flies
- Peak month
- April
- Records since 2000
- 4,934
Common Shiny Woodlouse
- Group
- Crustaceans
- Peak month
- April
- Records since 2000
- 4,917
Buck's-horn Plantain
- Group
- Flowering plants
- Peak month
- June
- Records since 2000
- 4,894