Amaryllis, Anemone, Autumn Crocus, Azalea, Belladonna Lily, Bird-of-Paradise, Bleeding Heart, Buttercup, Buckeye (Horse Chestnut), Caladium, Calla Lily, Christmas Rose, Clematis, Daffodil, Datura, Delphinium, Foxglove, Gloriosa Lily, Hydrangea, Iris, Ivy (English ivy), Lantana, Larkspur, Lily of the Valley, Lobelia, Lupin, Mistletoe, Monkshood, Morning Glory, Narcissus, Oleander, Potato, Poinsettia, Rhododendron, Star-of-Bethlehem, Sweet Pea, Tansy, Wisteria.

Note:

• Certain flowers are said to be toxic by some but not by others; for example petunias and primroses. Do err on the side of caution and do not eat them.
• Chrysanthemums contain pyrethrum, which kills aphids, mites and other insects but will not harm fish, plants, waterfowl or mammals and which breaks down quickly in sunlight. Do not confuse pyrethrum with pyrethoids, which are highly toxic.