Toxic Plant Series: The Avocado Association of Avian Veterinarians How to Grow Chrysanthemums in your Flower Beds Year Round The Plant Hunter's Atlas Yucca plants are poisonous to dogs A most interesting plant! Called the Sangre de Cristo (Spanish for "Blood of Christ"), the roots contain a red dye, and the clear sap is said to be able to seal wounds Arugula Plant Pods Click & Grow