Spring Pet Dangers UK 2026: Toxic Spring Plants (Daffodils, Bluebells), Adder Bites, Slug Pellets & Garden Chemicals

Dogs7 March 20263 min read
🐾 Veterinary Disclaimer: This article is for educational purposes only and does not replace professional veterinary advice. All medical content is reviewed by Dr. Sarah Mitchell, BVSc MRCVS. Always consult your registered veterinary surgeon if your pet shows signs of illness.
🔄Last Updated: 10 March 2026Originally published: 7 March 2026

Spring brings new life to UK gardens — and new dangers for pets. Bulb plants, garden chemicals, and even wildlife can pose serious risks. Knowing what to watch for lets you enjoy spring safely with your dogs and cats.

Toxic Spring Plants

Plant Toxic Part What It Does
Daffodils All (especially bulbs) Lycorine → vomiting, diarrhoea, seizures. Even vase water is toxic
Bluebells All Glycosides → stomach upset; large amounts → heart problems, difficulty breathing
Tulips All (especially bulbs) Mouth irritation, drooling, vomiting; severe: heart problems
Lilies All (pollen too) Fatal kidney failure in cats — even tiny amounts
Crocuses All GI upset; Autumn Crocus more toxic (colchicine)

Adder Bites

The adder (Vipera berus) is the UK’s only venomous snake, most active February–October with bites peaking June–August.

  • Signs: Rapid, painful swelling around two small puncture marks, lethargy, vomiting, bruising
  • Action: Keep your pet as still as possible. Carry them if you can (movement spreads venom). Get to a vet immediately
  • Most UK adder bites are survivable with prompt veterinary treatment

Slug Pellets & Garden Chemicals

  • Metaldehyde (slug pellets): Banned in the UK since April 2022 — but older products may still be in sheds. If found, dispose of safely. Causes tremors, seizures, death within hours
  • Ferric phosphate pellets: Safer alternative, but large quantities can still cause GI upset
  • Fertilisers: NPK fertilisers cause gastric upset. Weed-and-feed/moss killers are more toxic. Blood and bone meal attracts dogs — store securely
  • Cocoa mulch: Contains theobromine — same toxin as chocolate. Keep away from dogs

FAQs

My dog dug up and chewed a daffodil bulb — what should I do?

Contact your vet or the Animal PoisonLine (01202 509 000) immediately. Daffodil bulbs contain the highest concentration of lycorine and are the most dangerous part of the plant. Symptoms can include severe vomiting, diarrhoea, abdominal pain, tremors, and in serious cases, seizures. Treatment is more effective when started early.

⚕️ Veterinary Disclaimer: This article is for informational purposes only and does not replace professional veterinary advice. Always consult a qualified veterinarian for advice specific to your pet. If your pet is unwell, contact your vet or call the Animal PoisonLine (01202 509000) in an emergency.

SM

Dr. Sarah Mitchell

BVSc MRCVS

Dr. Mitchell is a practising veterinary surgeon with 12 years of clinical experience at a mixed-practice surgery in the West Midlands. She qualified from the Royal Veterinary College in 2014 and holds a certificate in small animal medicine. Sarah reviews all our health, nutrition, and breed-specific medical content.

📋 Veterinary Reviewer 🎯 Small Animal Medicine