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Spring Hazards for Dogs in the UK: What to Watch Out For

Spring brings longer walks, blooming gardens, and renewed outdoor activity — but it also brings a distinct set of hazards for UK dogs. Being aware of the seasonal risks helps you keep your dog safe through the most botanically active time of year.

Toxic Spring Plants

The UK spring brings a beautiful but potentially hazardous range of flowering plants. Daffodils are among the most common spring poisoning cases seen in dogs — all parts of the plant are toxic, but the bulb is most concentrated. Daffodil ingestion causes vomiting, abdominal pain, excessive salivation, and in severe cases, cardiac arrhythmias and convulsions. Given how widely daffodils are planted in UK parks and gardens, vigilance is essential.

Bluebells — a quintessentially British spring sight — are toxic to dogs, causing vomiting, diarrhoea, and potentially heart abnormalities if large quantities are consumed. Bluebell woods are safe for dogs to walk through unless they are actively chewing or digging up the plants. Keep an eye on inquisitive diggers.

Tulip bulbs contain tulipalin, a compound toxic to dogs; the bulb is significantly more dangerous than the flower. If your dog digs up bulbs planted in your garden — as many dogs will — this represents a real ingestion risk. Hyacinths, also popular in spring, carry similar risks. Conkers (horse chestnut seeds) don't appear until autumn, but fallen aescin-containing bark and leaves can cause mild toxicity from early spring onward.

Seasonal Parasites: Ticks, Fleas, and Lungworm

Spring marks the resurgence of parasite activity in the UK. Ticks become active when temperatures consistently exceed 4°C — in much of England, this means from late February onwards, significantly earlier than many owners realise. Ticks transmit Lyme disease (Borrelia burgdorferi), babesiosis, and other pathogens; Lyme disease in dogs causes lameness, fever, lethargy, and kidney disease, and is increasingly common in the UK.

Flea activity increases dramatically as temperatures rise. Indoor infestations can persist year-round in centrally heated homes, but spring typically brings an increase in new infestations. Flea-borne tapeworm (Dipylidium caninum) and flea bite hypersensitivity are common secondary concerns. Ensure your dog is on an effective flea prevention programme year-round, not just in summer.

Lungworm (Angiostrongylus vasorum) is transmitted through slugs and snails — organisms that become more active in spring and after rain. Dogs become infected by accidentally or deliberately ingesting slugs or snails, or by drinking from outdoor water sources contaminated by them. Lungworm can cause bleeding disorders, respiratory signs, and death if untreated. The PDSA advises asking your vet about lungworm prevention, as not all standard wormers cover Angiostrongylus.

Fertilisers, Pesticides, and Garden Products

Spring is peak season for garden treatments — fertilisers, herbicides, slug pellets, and pest control products — many of which pose risks to dogs. Traditional metaldehyde-based slug pellets are acutely toxic to dogs, causing tremors, seizures, and death. While metaldehyde has been banned from sale in the UK, older products may still exist in storage, and illegally sold versions occasionally appear.

Ferroc-based slug pellets (the approved alternative) are significantly less toxic but can still cause digestive upset in quantity. Weed killers containing glyphosate are widely used in UK gardens and carry a low-to-moderate risk to dogs if ingested when wet — keep dogs off treated areas until products have fully dried.

Fertilisers — including organic bone meal and blood meal — can be highly attractive to dogs due to their smell while also causing gastrointestinal distress if ingested. Store all garden products securely and adhere to recommended re-entry periods after application. The Animal Poison Line (01202 509000) can advise on specific products if ingestion occurs.

Grass Seeds: A Spring and Summer Danger to Prepare For

Grass seeds — particularly from foxtail grass and other wild grasses — pose an underappreciated but serious risk to dogs from late spring through summer. Their barbed structure allows them to penetrate skin, migrate into the ear canal, paw webbing, eyelids, and even internal organs. The seeds' one-directional movement means they cannot be expelled naturally once embedded.

Ear canal grass seed penetration causes sudden, severe head shaking and pawing at the ear. Interdigital (between toes) entry causes limping and obsessive licking. Eye penetration causes acute pain and discharge. Any suspected grass seed penetration requires prompt veterinary attention — delayed treatment allows seeds to migrate further, making removal more complex and expensive.

Regularly check your dog's coat, paws, ears, and eyes after walks in long grass from late spring onwards. Running a comb through coats after every grassland walk significantly reduces the risk of seeds finding their way in. Short-haired dogs have some advantage here, but any breed can be affected.

Spring Preparedness and CompareMyVet

Spring health visits — including parasite prevention review, tick awareness, and general seasonal health checks — are a good investment at the start of the season. Consultation fees for a standard vet visit range from £40 to £65, and knowing what local practices charge helps you plan your annual health budget.

CompareMyVet at app.comparemyvet.uk lets you compare vet prices in your area so you can manage seasonal health costs confidently. With CMA pricing reforms requiring all UK practices to publish their standard prices, comparing practices is now more straightforward than ever.

Start each spring prepared — updated parasite prevention, knowledge of your nearest emergency vet, and a clear picture of local vet prices all contribute to keeping your dog safe through the season.