21/10/2026
🌿🐴 POISONOUS PLANT OF THE WEEK: SYCAMORE 🐴🌿
🚨 Horse owners, beware!
Did you know that sycamore seeds, seedlings and leaves can contain Hypoglycin A (HGA), a toxin linked to Atypical Myopathy — a serious and potentially fatal muscle disease in horses?
🔎 Signs to look out for:
⚠️ Muscle weakness, stiffness or trembling
⚠️ Reluctance to move or difficulty walking
⚠️ Dark red or brown urine
⚠️ Sweating or rapid, laboured breathing
🍂🌱 When is the risk highest?
Autumn and spring! Fallen “helicopter” seeds can pose a risk in autumn, while young sycamore seedlings can be dangerous in spring.
🛡️ How can you protect your horse?
✅ Check paddocks regularly for sycamore seeds and seedlings.
✅ Remove fallen seeds and plant material safely.
✅ Fence off affected areas or move horses to safer grazing.
✅ Provide adequate grazing and supplementary forage, but remember this does not eliminate the risk.
✅ Check surrounding areas, as seeds can blow into paddocks.
If you suspect your horse has atypical myopathy, contact your vet immediately. The condition can progress rapidly, and prompt veterinary attention is vital.