UC ANR is committed to providing an accessible and inclusive web experience for all users. If you encounter an accessibility barrier or need content in an alternative or remediated accessible format, please contact anraccessibility@ucanr.edu.
Scientific Name: Pteridium aquilinum Common Name: Bracken Fern Thorns/Spines? How is this plant unsafe? How do you plant safely? No Fronds are poisonous if ingested. Supervise pets and children playing near this plant.
Scientific Name: Pyracantha spp. Common Name: Firethorn, Pyracantha Thorns/Spines? How is this plant unsafe? How do you plant safely? Yes Plant has obvious thorns. Note how large the plant grows and plant it a safe distance away from sidewalks and paths.
Scientific Name: Ricinus communis Common Name: Castor Bean, Red Castor Oil Plant; Varieties include 'Carmencita', 'Red Giant', and 'Impala' Thorns/Spines? How is this plant unsafe? How do you plant safely? No Seeds are poisonous if ingested. Leaves contain toxins as well.
Scientific Name: Sambucus nigra ssp. caerulea Common Name: Mexican Elderberry Thorns/Spines? How is this plant unsafe? How do you plant safely? No Roots, stems, and leaves of unripe fruits can cause diarrhea, nausea and vomiting. Supervise pets and children playing near this plant.
Scientific Name: Sansevieria spp. Common Name: Mother-in-law-Tongue Thorns/Spines? How is this plant unsafe? How do you plant safely? No All parts of this plant are toxic to both humans and pets. May cause nausea, vomiting, and diarrhea if ingested. Plant sap can cause skin irritation.
Scientific Name: Schinus molle Common Name: Pepper Tree, Peruvian Pepper Tree Thorns/Spines? How is this plant unsafe? How do you plant safely? No Leaves can cause dermatitis.
Scientific Name: Schinus terebinthifolius Common Name: Brazilian Pepper Tree Thorns/Spines? How is this plant unsafe? How do you plant safely? No Fruits can cause upset stomach if ingested. This plant can be invasive in California's wildlands. For more information on this plant, visit https://wric.
Scientific Name: Sedum spp. Common Name: Stonecrop, Pork & Beans Thorns/Spines? How is this plant unsafe? How do you plant safely? No Leaves are toxic if ingested and sap may be irritating to the skin.
Scientific Name: Senecio spp. Common Name: Dusty Miller, String of Pearls Thorns/Spines? How is this plant unsafe? How do you plant safely? No Sap may cause dermatitis.
Scientific Name: Solanum jasminoides Common Name: Potato Vine Thorns/Spines? How is this plant unsafe? How do you plant safely? Yes Berries are poisonous if ingested, because they contain solanine. Supervise pets and children playing near this plant.
