African violet
Saintpaulia ionantha
ageratum (floss flower)
Ageratum houstonianum
amaryllis
Hippeastrum spp.
cactus
(numerous genera)
canna
Canna spp.
celosia
Celosia argentea
chrysanthemum (mums)
Chrysanthemum spp.
coleus
Solenostemon scutellarioides
columbine
Aquilegia spp.
cosmos
Cosmos spp.
crocus
Crocus spp.
cyclamen
Cyclamen persicum
daffodil
Narcissus spp.
dahlia
Dahlia spp.
daylily
Hemerocallis spp.
dianthus
Dianthus spp.
dracaena
Dracaena spp.
dumbcane
Dieffenbachia spp.
pansy
Viola × wittrockiana
peony
Paeonia spp.
peperomia
Peperomia spp.
petunia
Petunia spp.
philodendron
Philodendron spp.
poinsettia
Euphorbia pulcherrima
portulaca (moss rose)
Portulaca spp.
salvia
Salvia spp.
schefflera
Schefflera spp.
snake plant (sword plant, mother-in-law's tongue)
Sansevieria trifasciata
snapdragon
Antirrhinum majus
sweet alyssum
Lobularia maritima