Adam's Needle
Alpine Poppy
Atlas Poppy
Basket of Gold Alyssum
Bearded Iris
Bergenia
Bitterroot
Blue Flax
Cactus, prickly pear
Carpathanian carpatica
Catmint
Chrysanthemum
Common Thrift
Coral Bells
Cranesbill Geranium
Crimson Scabious
Daylily
Delphinium
Dianthus
Donkey Tail Spurge
Dwarf Bearded Iris
False Rock Cress
Fleabane, Showy Daisy
Flowering Onion
Giant Hyssop
Hens and Chicks
Hollyhock
Lady's Mantle
Lavender
Lily
Musk Mallow
Maltese Cross
Moss Phlox
Nodding Wild Onion
Oriental Poppy
Ozark Sundrop
Penstemon, Beardtongue
Peony
Pincushion Flower
Pinks
Pussy Toes
Rock Rose
Rose Campion
Russian Sage
Russian Stonecrop
Sage
Sea Holly
Snow-in-summer
Stonecrop
Thyme
Wormwood
Yarrow
Yellow Ice Plant

(Source: www.toronto.ca/water)

Bachelor Buttons
Butterfly Gaura
California Poppy
Clary Sage
Cleome Spiderflower
Cosmos
Dahlberg Daisy
Dusty Miller
Gazania
Geranium
Lantana
Marigold
Portulaca
Prickly Poppy
Profusion Zinnia
Statice
Strawflower
Verbena