✾
Rosy Garlic
Allium roseum
✾
Round-Headed Rampion
Phyteuma orbiculare
✾
Roundleaf Liverleaf
Hepatica americana
✾
Saffron Crocus
藏红花 · サフラン
Crocus sativus
Autumn
✾
Saffron Crocus
Crocus sativus
✾
Sasanqua
茶梅 · サザンカ
Camellia sasanqua
Winter
✾
Satin Flower
Clarkia amoena
✾
Sea Thrift
Armeria maritima
✾
Seaside Daisy
Erigeron glaucus
✾
Serbian Bellflower
Campanula poscharskyana
✾
Shooting Star
Dodecatheon meadia
✾
Showy Beardtongue
Penstemon spectabilis
✾
Showy Milkweed
Asclepias speciosa
✾
Showy Speedwell
Veronica speciosa
✾
Siberian Bugloss
Brunnera macrophylla
✾
Silver Lupine
Lupinus albifrons
✾
Siskiyou Lewisia
Lewisia cotyledon
✾
Slender Deutzia
Deutzia gracilis
✾
Snapdragon
金鱼草 · キンギョソウ
Antirrhinum majus
Spring–Autumn
✾
Sneezeweed
Helenium autumnale
✾
Snow in Summer
Cerastium tomentosum
✾
Snowdrop
雪花莲 · スノードロップ
Galanthus nivalis
Winter–Spring
✾
Snowdrop Windflower
Anemone sylvestris
✾
Snowy Angels Trumpet
Brugmansia suaveolens
✾
Solomon’s Seal
Polygonatum multiflorum
✾
Southern Blue Flag
Iris virginica
✾
Spanish Bluebell
Hyacinthoides hispanica
✾
Speedwell
Veronica longifolia
✾
Spider Flower
Cleome hassleriana
✾
Spotted Zygopetalum
Zygopetalum maculatum
✾
Spring Beauty
Claytonia virginica
✾
Spring Blossom
Jaborosa integrifolia
✾
Spring Starflower
Ipheion uniflorum
✾
St. John’s Wort
Hypericum calycinum
✾
Star Jasmine
Trachelospermum jasminoides
✾
Star of Bethlehem
Ornithogalum magnum
✾
Starry Eyes
Nierembergia gracilis
✾
Statice
补血草 · スターチス
Limonium sinuatum
Summer–Autumn
✾
Stonecrop
Sedum spp.
✾
Sugarbowl Clematis
Clematis scottii