A vase of garden-fresh hydrangeas embodies summer. Hydrangeas are harmful to cats, so if you have one in the house or yard, cut them.
Hydrangeas are mainly associated with bigleaf and mountain varieties. Hydrangeas are mainly associated with bigleaf (Hydrangea macrophylla) and mountain (Hydrangea serrata)
The Pet Poison Hotline says cats can poison themselves by eating any hydrangea plant part. Hydrangea cyanogenic glycoside is poisonous. The flowers, leaves, buds, and stalks all carry poison, but the buds and leaves are most toxic.
If your cat has eaten hydrangea blossoms, call your vet and watch for disease. Dr. Michelle Burch, a veterinarian, says hydrangea poisoning seldom causes serious problems.
If your cat visits your yard hydrangeas, you should try to keep her away. "Through the garden, place shells, branches, and thorny vines that dogs and cats won't step on," advises Dr. Burch. Other methods are also available.
Several non-toxic botanical oil sprays can be used along garden and plant edges. "The botanical oils smell bad to dogs and cats, deterring them," says Dr. Burch.
Install a motion-activated sprinkler on your garden borders to deter animals. "When the sprinkler detects motion, it will spray an unsuspecting intruder," adds Dr. Burch.
Movement-detecting ultrasonic deterrents can be fitted. Ultrasonic sound and light may scare pets away from certain sections of the yard or garden.
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