Hawthorn berries are not directly poisonous, but there are certain circumstances in which they can have adverse effects. The seeds in Hawthorn berries contain a compound called amygdalin, which is cyanide bonded with sug... More »

Apple seeds are not harmful to dogs when ingested in small amounts, according to DogSupplies.com. However, apple seeds contain a form of cyanide that is toxic to humans and animals when ingested in large quantities. More »

Apple seeds contain cyanide, a poison that is poisonous to humans. According to About.com, consuming the seeds of an apple, however, is not typically dangerous or lethal to people. More »

The Carolina cherry laurel, Prunus caroliniana, produces berries that are toxic to humans, dogs and livestock but safe for birds. English laurel, Prunus laurocerasus, and mountain laurel, Kalmia latifolia, are also toxic... More »

Some shrubs with poisonous berries are the Daphne, Japanese yew, bitter nightshade and English holly. These bushes produce berries that are attractive to birds, ensuring seed propagation. However, these berries are toxic... More »

www.reference.com Home & Garden Gardening & Landscapes Outdoor Plants & Flowers

Holly berries are poisonous to both humans and pets. A child who consumes just a couple of holly berries may not experience any problems, but prolonged vomiting, nausea and diarrhea can occur when more than three berries... More »

www.reference.com Home & Garden Gardening & Landscapes Outdoor Plants & Flowers

Hawthorn berries and other parts of the hawthorn plant are used to make medicines and are mainly used for diseases of the heart and other cardiac-related health problems. These issues can include congestive heart failure... More »

www.reference.com Health Nutrition & Diets