Here is a partial list of common Poisonous Flowers / Plants in your landscape that should NOT be eaten:

Aconite, Anemone, Anthurian, Autumn Crocus, Azalea,

Boxwood, Buttercup, Butterfly Weed Caladium, Calla Lily,

Carolina Jasmine, Castor Bean, Cherry Laurel, Chinaberry,

Clematis Daffodil, Deadly Nightshade, Delphinum,

Dumbcane, Elephant Ears, False Hellebore, Four O'Clock,

Foxglove, Gardenia, Gloriosa Daisy, Heavenly Bamboo,

Horse Chestnut, Hyancinth, Hydrangea, Iris, Ivy,

Jessamine, Jimson Weed, Jonquil, Lantana, Lily of the Valley,

Lobelia, March Marigold, May Apple, Mistletoe, Morning Glory,

Nightshade, Oleander, Periwinkle, Pointsettia, Poison Hemlock,

Potato, Privet, Philodendron, Rhododendron, Schefflera,

Star of Bethlehem, Sweet Pea, Tobacco, Tomato (blooms),

Trumpet Vine, Water Hemlock, Wild Cherry, Wisteria,

Yellow Oleander.