Is ZZ Plant poisonous ? Is ZZ plant poisonous to cats and dogs ? Our Arizona native plant of the day is an interesting one! Commonly called Horsetail or Bottlebrush, Equisetum spp. are vascular plants that reproduce by spores, not by seeds. As you might guess, Assorted Succulents Protect Your Cat by Keeping These Toxic Succulents Out of Your Home Kinship When and How to Start Tomato Seeds Indoors Northern Homestead Strawberry Popcorn Seeds Red Heirloom Corn Variety