Purslane 'Fairytale Cinderella' Purslane 'Yubi Apricot'
Purslane 'Yubi Lemon Yellow' Purslane, Milk
Purslane, Summer (spp.) Purslane, Summer 'Duet Yellow'
Purslane, Summer 'Wildfire' Purslane: umbellata, Rock
Pussley (spp.) Pussley 'Duet Yellow'
Pussley 'Wildfire' Pussy Ears
Pussytoes 'Rubra' Pussytoes, Stoloniferous 'Rubra'
Pussytoes: parvifolia Pussytoes: rosea
Puya Puya: coerulea violacea
Puya: raimondii Pycnostachys
'Pygmy Torch' Prince's Feather Pyramidal Bugleweed 'Metallica Crispa'
Pyrenean Cranesbill 'Wargrave Pink' Pyrethrum (spp.)
Pyrethrum 'Painted Daisy' Pyrethrum 'Robinson Hybrids'
Pyrethrum 'Robinson's Mix' Pyrethrum 'Robinson's Red'
Pyrolla, Pink 'Quadricolor' Wandering Jew: zebrina
Quaker Ladies Quamash 'Coerulea'
Quamash, Cusick 'Quartz Burgundy' Verbena
'Queen Alexander' Oriental Poppy Queen Anne's Lace
Queen Anne's Lace: carota 'Queen Josephine' Hosta
Queen Lily Ginger (spp.) Queen Lily Ginger 'Emperor'
'Queen of Night' Hybrid Tulip 'Queen of Siam' Chinese Evergreen
Queen of the Alps (spp.) Queen of the Meadows 'Plena'
Queen of the Meadows Variegated Queen of the Night
Queen of the Prairie (spp.) 'Queen Sophia' French Marigold
Queen Victoria Century Plant Queen's Spiderwort
Queensland 'Queeny Purple' Hollyhock
'Quilled Petals Mix' Black-eyed Susan 'Quills' Sweet Coneflower
Quiver Tree Rabassam
Rabbit Bush Rabbit Tail Grass
Rabbit Tracks (spp.) Rabbit Tracks 'Herringbone Plant'
Rabbit's Foot Rabbit's Foot Fern
'Rachels Gold' Garden Sage 'Radiant Edger' Hosta
Radicchio (spp.) Radicchio 'Marina'
Ragged Orchid 'Ragin Cajin' Red Ruellia
Ragweed, Annual Ragweed, Giant
Ragweed, Great Ragwort (spp.)
Ragwort 'Desdemona' Ragwort 'Othello'
Railroad Vine Rain Lily
Rain Lily: candida Rainbow Plant (spp.)
Rainbow Plant 'Chameleon' 'Rainbow River' Flax
Rainbow Rockcress (spp.) Rainbow Rockcress 'Snow Cap'
Rainbow Rockcress 'Whitewell Gem' 'Rainbow Sunrise (Maori Queen)' New Zealand Flax
'Rainforest' Orchid 'Ramie' Ramie
Ramie (spp.) Ramie 'Ramie'
'Ramona' Hybrid Clematis Ram's Horn
'Rana' Guzmania Rancheria Grass (spp.)
Rancheria Grass Blue Raoulia
Raoulia 'Greenstone' Raoulia: haastii
'Rare Treat' Tall Bearded German Iris