| faasenii | after J.H. Faassen | naar J.H. Faassen | Nepeta faassenii |
| falcatum | sickle-shaped | sikkelvormig | Cyrtomium falcatum |
| fasciata | with ribbon and stripes | van banden en strepen voorzien | Aechmea fasciata |
| fascinator | spellbound | betoverend | Maranta leuconeura 'Fascinator' |
| fastigiata | equal leveled | even hoog | Carpinus betulus 'Fastigiata' |
| fenestralis | with windows | van vensters voorzien | Vriesea fenestralis |
| filifera | with thin-thread branches | met draaddunne twijgen | Chamaecyparis pisifera 'Filifera' |
| filipendula | hanging on threads | aan draden hangend | Achillea filipendula |
| flaccida | weak | slap | Yucca flaccida |
| flaviramea | with yellowish twigs | met lichtgele twijgen | Cornus stolonifera 'Flaviramea' |
| flavum | light yellow | lichtgeel | Rhododendron flavum |
| fletcheri | after J.C.B. Fletcher | naar J.C.B. Fletcher | Chamaecyparis lawsoniana 'Fletcheri' |
| floccosa | hairy flaked | vlokkig behaard | Cotoneaster salicifolia var. floccosa |
| floribunda | abundant flowering | rijk bloeiend | Malus floribunda |
| floridus, -a | with many flowers | bloemrijk | Calycanthus floridus |
| fluminensis | along a river | bij de rivier | Tradescanthia fluminensis |
| foetida, us | stinking | stinkend | Helleborus foetdus |
| foremanii | after Foremann | naar Foremann | Skimmia foremanni |
| formosa | beautifull | schoon | Dicentra formosa |
| forsteriana | after J.R.&J.G.A. Forster | naar J.R.&J.G.A. Forster | Howeia forsteriana |
| fortunei | after F. Fortune | naar F. Fortune | Euonymus fortunei |
| fosterianus | after M. Foster | naar M. Foster | Cryptanus zonatus 'Fosterianus' |
| fragilus | weak | broos, zwak | Opuntia fragilus |
| fragrans | fragrant | welriekend | Viburnum fragrans |
| fragrantissimum | stongly fragrant | sterk welriekend | Adianthum cuneatum 'fragrantissimum' |
| frainetto | old Italian name for oak | italiaans volksnaam voor eik | Quercus frainetto |
| franchetti | after A. Franchet | naar A. Franchet | Cotoneaster franchetti |
| frangula | tree with fragile wood | boom met broos hout | Rhamnus frangula |
| fraxinifolia | with leaves of Fraxinus=ash | met blad van Fraxinus= es | Pterocarya fraxinifolia |
| frisia | frisian, from Friesland | Fries, van Friesland | Robinia pseudoacacia 'Frisia' |
| fructicohybrida | shrublike hybrid | heesterachtige hybride | Calceolaria fructicohybrida |
| frutescens | half shrublike | halfheesterachtig | Chrysanthemum frutescens |
| fruticosa, -us | shrublike | heesterachtig | Potentilla fructicosa |
| fulgens | shiny | schitterend | Aechmea fulgens |
| fuscus | darkbrown | donkerbruin | Crypthanthus zonatus 'Fuscus' |
