Miscellaneous Plants
According to the book Daffodils are Dangerous (1966) [link], additional poisonous garden plants include:
- autumn crocus
- black locust tree
- bleeding heart
- box
- castor bean plant
- cherry laurel
- chinaberry tree
- Christmas rose
- daphne
- English ivy
- ginkgo
- golden chain
- larkspur
- lilies
- monkshood (wolfsbane)
- mountain laurel
- pasque flower
- poppy
- snow-on-the-mountain
- star-of-Bethlehem
- tobacco
- yew
- deadly nightshade/belladonna
- Indian hemp
- hemlock
- henbane/stinking Roger
- jimsonweed/moonflower
- manchineel
- mandrake
- mayapple
- pokeweed
From the book California Foraging (2014) [link]:
- flaxseed should not be eaten raw
- avoid tea made from some conifers (ponderosa pine, Norfolk pine, Araucana heterphylla, and Pacific yew)
- lemonade berry and sugar bush should be avoided by people allergic to cashews
- mountain pennyroyal, sierra mint, coyote mint should be avoided if pregnant
- soaproot should not be eaten raw
- edible acorns must be leached
According to Wicked Plants (2009) [link], other dangerous or poisonous plants include:
- coyotillo/cimmaron
- philodendron
- uncooked red kidney bean
- unripe ackee
- improperly prepared cassava
- chrysanthemum (blossoms from tea okay but plants can cause allergic reactions)
- hyacinth
- peacock flowers
- rosary pea
- sago palm