Hydrangea Plants and Pets

Hydrangeas, or Hydrangea arborescens, are beautiful flowering plants that are common decorations in many yards. Pets of all sorts from cats to dogs and even horses have been known to search out these flowering plants for a snack.

  1. Identification

    • The hydrangea plant is also known as "hortensia." It may have large clusters of flowers or small, flat flowers. Hydrangeas can be small tress or climbing vines, but are commonly shrub-like, reaching heights of three to nine feet.

    Warning

    • The ASPCA poison control center identifies hydrangeas as being toxic to cats, dogs and horses.

    Effects

    • Depression, lethargy, vomiting and diarrhea are common side effects seen in pets who eat hydrangeas.

    Considerations

    • The toxic principle in the hydrangea plant is cyanogenic glycosides. This chemical has the potential to turn into cyanide, a strong poison, when exposed to stomach acid. Cyanide poisoning from hydrangeas is considered rare.

    Solution

    • Do not plant hydrangeas in an area near your pet's habitat. Supervise animals if they must be around the plants. Call a veterinarian in the event of accidental ingestion.