It is important to check in and around the edge of paddocks for any plants which may be harmful to horses or ponies. Any harmful plants should be dug out and removed. The following plants are just some which are poisonous to horses and ponies in varying degrees.

• Acorns
• Alder Buckthorn
• Black Bryony
• Black Nightshade
• Box
• Bracken
• Broom
• Buckthorn
• Buttercup
• Celandine - Greater
• Charlock
• Cherry Laurel
• Chickweed
• Clover
• Columbine
• Corncrockle
• Cowbane
• Cuckoo Pint
• Darnel
• Deadly Nightshade
• Foxglove
• Ground Ivy
• Groundsel
• Hellebore
• Hemlock
• Hemlock Water-Dropwort
• Hemp Nettle
• Henbane
• Herb Paris
• Horse Radish
• Horsetail
• Iris
• Laburnum
• Larkspur
• Lily of the Valley
• Linseed
• Lupin
• Marsh Marigold
• Meadow Saffron
• Melilot
• Mercury
• Monk's Hood
• Oak
• Pimpernel
• Poppy
• Potato
• Privet
• Ragwort
• Rhubarb
• Rododendron
• Rush
• St Johns Wort
• Sorrel
• Spurge
• Thorn Apple
• White Bryony
• Woody Nightshade
• Yew