Common names: F
- fairy crassula
- fairy fan-flower
- fairy foxglove
- fairy iris
- fairy primrose
- fall daffodil
- false bindweed
- false bishop's weed
- false chamomile
- false cypress
- false dayflower
- false heather
- false hemp
- false Indian plantain
- false indigo
- false lily-of-the-valley
- false lupin
- false nettle
- false oat grass
- false spikenard
- false spiraea
- false sunflower
- fan aloe
- fan palm
- fan-flower
- farewell to spring
- Fargesi willow
- Farmer's dendrobium
- Father Hugo's rose
- feather cactus
- feather grass
- feather reed grass
- feathered pink
- feathertop grass
- February daphne
- feijoa
- fennel
- fenugreek
- Ferdinand saxifrage
- fern leaf peony
- fern palm
- fernleaf lavender
- fernleaf yarrow
- fescue
- feverfew
- few flowered leek
- field bindweed
- field briar
- field chickweed
- field clover
- field fennelflower
- field horsetail
- field lupine
- field maple
- field mustard
- field pansy
- field poppy
- field restharrow
- fig
- fig-leaved gourd
- fig-leaved squash
- figwort
- Fiji fan palm
- filbert
- fingerroot
- fir
- fire bush
- fire lily
- fire vine
- firecracker flower
- firecracker plant
- firecracker vine
- fireglow spurge
- firethorn
- fireweed
- firewheel tree
- five leaf akebia
- five spot
- five-finger fern
- flag
- flag iris
- flaky juniper
- flamboyant
- flame azalea
- flame freesia
- flame of the woods
- flame tree
- flame violet
- flaming Katy
- flaming sword
- flaming torch
- flamingo flower
- Flanders poppy
- flannelbush
- flat nectarine platerina
- flat peach
- flat-leaved vanilla
- flax
- flax leaf paperbark
- flax lily
- fleabane
- fleece flower
- Fleischer's willow herb
- fleshy hawthorn
- floating fern
- floating watermoss
- Florence fennel
- floribunda rose
- florist's cineraria
- floss flower
- flower of jove
- flower-of-an-hour
- flowering almond
- flowering ash
- flowering cabbage
- flowering currant
- flowering maple
- flowering onion
- flowering quince
- flowering raspberry
- flowering rush
- flowering tobacco
- fly agaric
- fly amanita
- fly flower
- fly honeysuckle
- foamflower
- fodder beet
- fodder galega
- Forbes' glory of the snow
- forest grass
- forest sugarbush
- forget-me-not
- fork-leaved sundew
- forking larkspur
- Formosa toad lily
- Forrest's rowan
- forsythia
- Fortune's holly fern
- Fortune's spindle
- fountain bamboo
- fountain buddleja
- fountain grass
- four leaf clover
- four o'clocks
- foxglove
- foxglove tree
- foxtail amaranth
- foxtail barley
- foxtail lily
- foxtail millet
- foxtail orchid
- fragrant abelia
- fragrant agrimony
- fragrant evening primrose
- fragrant fringecup
- fragrant hellebore
- fragrant olive
- fragrant orchid
- fragrant viburnum
- fragrant virgin's bower
- fragrant water lily
- fragrant winter hazel
- frangipani
- Frankfort rose
- Fraser's photinia
- Freemann's maple
- Fremont cottonwood
- French lavender
- French lilac
- French marigold
- French parsley
- French rose
- French spinach
- French tamarisk
- Frensh cranesbill
- friendship tree
- fringed bleeding heart
- fringed iris
- fringed loosestrife
- fringed rosemallow
- fringed tulip
- fringed water lily
- fringed-lipped dendrobium
- fritillary
- fruit sage
- fuchsia
- Fuller's teasel
- fullmoon maple
- fumewort
- fumitory
- funnel creeper
- fuzzy kiwi