Azaleas and Rhododendrons: A Common Landscaping Danger

Azaleas and rhododendrons are extremely common landscaping shrubs, which means exposure risk is high simply because so many yards have them. They contain grayanotoxins, which affect the heart and nervous system rather than just causing the digestive upset that's more typical of many toxic plants.

Even a small amount of leaves can cause symptoms, and severity tends to scale with how much was eaten, though sensitivity does vary between individual animals.

Symptoms to watch for: drooling, vomiting, and diarrhea initially, progressing to weakness, an irregular or slowed heart rate, low blood pressure, and in severe cases, collapse or seizures.

What to do right now: any known ingestion of azalea or rhododendron leaves or flowers should be assessed the same day given the cardiac involvement, even if your pet seems only mildly affected at first — heart rhythm effects aren't something you can reliably judge just by watching behavior.

When it's an emergency: any weakness, irregular heartbeat you can feel or notice, or collapse — these indicate the cardiac effects are progressing and need immediate attention.

## Related Reading

• English Ivy: A Common Houseplant With Real Toxicity Risk
• Mistletoe and Holly: Holiday Plants With Real Risk
• Glow Sticks: Usually More Dramatic Than Dangerous

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This is general information, not a substitute for an actual assessment of your specific pet, weight, and situation. If you're ever unsure whether something your pet ate needs immediate attention, a quick video vet consultation can tell you in minutes whether to monitor at home or head to a clinic.