Lawn Grass & Your Dog:
What Every Pet Owner Should Know

If you have ever caught your dog grazing on the lawn like a small, confused cow, you are not alone. Dogs eat grass for several reasons — and most of them are perfectly natural:

📷 Dogs and family enjoying the lawn

• Natural instinct — Dogs are omnivores. Their wild ancestors consumed plant material as part of a varied diet, and this behaviour has carried through generations.
• Upset stomach — Many dog owners believe their pets eat grass to induce vomiting when feeling nauseous. However, research suggests fewer than 25% of dogs actually vomit after eating grass, so this isn't always the reason.
• Fibre and nutritional needs — Grass provides roughage that aids digestion. If your dog's diet is lacking in fibre or certain nutrients, it may instinctively turn to grass to compensate.
• Boredom or anxiety — Dogs left alone in the garden for extended periods may eat grass simply to pass time or manage stress.
• They enjoy it — Some dogs genuinely like the taste and texture of fresh, tender grass, especially early in the morning when it is still dewy.

Eating grass in moderation is generally harmless. The danger arises when the grass has been treated with pesticides, herbicides, or chemical fertilisers — a very real concern for manicured lawns in residential estates.

Going back to our Karen client — his dog's skin irritation was almost certainly triggered by grass pollen. Just like humans, dogs can develop environmental allergies, and grass pollen is one of the most common culprits. In Nairobi, pollen levels tend to peak during the dry seasons, particularly around January–February and August–September, when grasses flower and release large quantities of pollen into the air.

📷 Signs of grass pollen allergy in dogs

Common signs of grass pollen allergy in dogs include:

• Excessive scratching, particularly around the face, paws, belly, and groin
• Red, watery, or swollen eyes
• Sneezing and a runny nose
• Persistent licking or chewing of paws
• Recurring ear infections
• Hot spots or skin rashes, especially on areas that make direct contact with grass

If you notice these symptoms flaring up during dry or windy weather, grass pollen allergy is a strong suspect. Your vet can conduct allergy testing to confirm the trigger and recommend a treatment plan.

A beautiful, well-manicured lawn can harbour a surprising number of hazards for your dog. Being aware of these can help you make smarter decisions about lawn care and pet safety.

The good news is that with a few adjustments, you can have a lush, healthy lawn and a happy, healthy dog. Here is what we recommend to our clients:

Pet-safe lawn products

Regular mowing reduces pollen

Designated dog play zone

1. Choose pet-safe lawn care productsLook for organic or pet-certified fertilisers and weed control options. Always read labels and keep your dog off freshly treated areas for the recommended period.
2. Mow regularlyShorter grass produces less pollen. Keeping your lawn well-trimmed during pollen season can significantly reduce your dog's exposure.
3. Select dog-tolerant grass varietiesIn Nairobi, kikuyu grass is common and reasonably hardy. Discussing grass variety with your landscaper can help you find options that suit both your aesthetic and your pet.
4. Create a designated dog zoneConsider setting aside a section of the garden with hard landscaping, gravel, or tough ground cover where your dog can play freely.
5. Rinse your dog after outdoor playDuring high pollen periods, wiping down your dog's coat and paws after time on the lawn can dramatically reduce the pollen they carry indoors and into their skin.

If your dog is already showing signs of lawn-related irritation, here are practical steps to take:

📷 Happy pets in a safe garden environment

• Consult your vet — A proper diagnosis is essential before starting any treatment. Your vet can differentiate between a grass allergy and other skin conditions such as mange or fungal infections.
• Antihistamines and allergy medication — For dogs with confirmed grass pollen allergies, vets often prescribe antihistamines or corticosteroids during peak pollen periods.
• Improve your dog's diet — If your dog constantly eats grass, it may signal a nutritional deficiency. Switching to a higher-quality, higher-fibre diet can help reduce this behaviour.
• Regular grooming — Bathing your dog regularly during pollen season helps remove allergens from the coat. Use a gentle, hypoallergenic shampoo recommended by your vet.
• Keep a symptom diary — Note when flare-ups occur and whether they coincide with time on the lawn, weather patterns, or seasonal changes. This information is invaluable for your vet.