| Fairies' Thimbles |
Campanula cochlearifolia |
 |
| Fairy Foxglove |
Erinus alpinus |
|
| False Acacia |
Robinia pseudoacacia |
 |
| False Blue Flax |
Heliophila longifolia |
|
| False Freesia |
Anomatheca laxa |
 |
| False Indigo |
Baptisia australis (alba) |
|
| Fame Flower |
Talinum okanoganense |
|
| Fennel |
Foeniculum vulgare |
|
| Fever Root |
Ruellia tuberosa |
 |
| Feverfew |
Tanacetum parthenium |
|
| Field Buttercup |
Ranunculus acris |
|
| Field Mouse Ear |
Cerastium arvense |
|
| Field Poppy |
Papaver rhoeas |
|
| Field Scabious |
Knautia arvensis |
|
| Field Violet |
Viola arvensis |
|
| Fine-leaved Felicia |
Felicia filifolia |
 |
| Firecracker Flower |
Crossandra undulifolia (infundibulifolia) |
|
| Flamboyant, Flame Tree |
Delonix regia |
|
| Flame Nettle |
Solenostemon scutellarioides |
|
| Flame of the Woods |
Ixora coccinea |
|
| Flame Tree |
Brachychiton acerifolius |
|
| Flame Vine, Flaming Trumpet |
Pyrostegia venusta |
|
| Flanders Poppy |
Papaver rhoeas |
|
| Flannel Bush |
Fremontodendron californica |
|
| Flax (many) |
Linum |
|
| Fleabane (many) |
Erigeron |
|
| Fleabane |
Erigeron aureus |
|
| Fleabane |
Erigeron compositus |
|
| Fleabane |
Pulicaria dysenterica |
|
| Floss Flower |
Ageratum houstonianum |
|
| Flowering Maple |
Abutilon 'Nabob' |
|
| Flowering Maple |
Abutilon vitifolium |
|
| Flowering Onion (many) |
Allium |
|
| Flowering Onion |
Allium cyathophorum v farreri |
|
| Flowering Onion |
Allium 'Purple Sensation' |
|
| Flowering Tobacco |
Nicotiana alata |
|
| Forest Lily |
Veltheimia bracteata |
|
| Forest Pansy |
Cercis canadensis |
|
| Forget-me-Not |
Myosotis sylvatica |
|
| Four Corners |
Grewia occidentalis |
|
| Four o'clock |
Mirabilis |
|
| Foxglove (many) |
Digitalis |
|
| Foxglove |
Digitalis purpurea |
|
| Foxglove, Perennial |
Digitalis grandiflora |
|
| Foxglove Tree |
Paulownia tomentosa |
|
| Foxtail Agave |
Agave attenuata |
|
| Foxtail Fern |
Asparagus densiflorus |
|
| Foxtail Lily (many) |
Eremurus |
|
| Foxtail Lily |
Eremurus robustus |
|
| Fragile Bellflower |
Campanula fragilis |
|
| Fragrant Snowbell |
Styrax obassia |
|
| Frangipani |
Plumeria rubra |
|
| Freesia |
Freesia |
|
| Fremont's Indigobush |
Psorothamnus fremontii |
|
| French Lavender |
Lavandula stoechas |
|
| French Marigold |
Tagetes patula |
|
| Frilly Bergenia |
Bergenia ciliata |
|
| Fringed Sandwort |
Arenaria ciliata |
|
| Fritillary |
Fritillaria raddeana |
|
| Fuchsia (many) |
Fuchsia |
|
| Fuchsia |
Fuchsia boliviana |
|
| Funkia |
Hosta |
|
