Hamamelis x intermedia 'Arnold's Promise' Hamamelis x intermedia 'Barnsted Gold'
Hamamelis x intermedia 'Diana' Hamamelis x intermedia 'Hiltenbury'
Hamamelis x intermedia 'Jelena' Hamamelis x intermedia 'Luna'
Hamamelis x intermedia 'Primavera' Hamamelis x intermedia 'Ruby Glow'
Hamamelis japonica var. flavopurpurascens Hamamelis mollis
Hamamelis mollis 'Brevipetala' Hamamelis mollis 'Pallida'
Hamamelis mollis 'Princeton Gold' Hamamelis vernalis
Hamamelis vernalis 'Autumn Embers' Hamamelis vernalis 'Carnea'
Hamamelis vernalis 'Christmas Cheer' Hamamelis vernalis 'Purpurea'
Hamamelis vernalis 'Sandra' Hamamelis virginiana
Hamamelis virginiana 'Little Suzie' Hamelia patens
Harpephyllum caffrum Harpullia hillii
Harpullia pendula Harrisia gracilis
Hebe x 'Edinensis' Hebe x 'La Seduisante'
Hebe x 'Margret' Hebe x 'Red Edge'
Hebe 'Caledonia' Hebe 'First Light'
Hebe 'Heilan Lassie' Hebe 'Hinerua'
Hebe 'Midsummer Beauty' Hebe 'Purple Shamrock'
Hebe amplexicaulis Hebe x andersonii 'Variegata'
Hebe buxifolia 'Nana' Hebe cupressoides 'Broughton Dome'
Hebe epacridea Hebe x franciscana 'Blue Gem'
Hebe x franciscana 'Lobelioides' Hebe glaucophylla
Hebe haastii Hebe menziesii
Hebe ochracea 'James Stirling' Hebe pimeleoides 'Quicksilver'
Hebe pinguifolia Hebe pinguifolia 'Godefrovana'
Hebe pinguifolia 'Pagei' Hebe pinguifolia 'Sutherlandii'
Hebe propinqua Hebe rakaiensis
Hebe recurva Hebe speciosa
Hebe speciosa var. violacea Hebe topiaria
Hedera canariensis Hedera canariensis 'Variegata'
Hedera colchica Hedera colchica 'Dentata Variegata'
Hedera colchica 'Trabzon' Hedera helix
Hedera helix 'Anne Marie' Hedera helix 'Baltica'
Hedera helix 'California' Hedera helix 'Curly Locks'
Hedera helix 'Filigran' Hedera helix 'Glacier'
Hedera helix 'Gold Child' Hedera helix 'Gold Heart'
Hedera helix 'Green Leaf Varigated' Hedera helix 'Green Ripple'
Hedera helix 'Irish Lace' Hedera helix 'Jubilee'
Hedera helix 'Manda's Crested' Hedera helix 'Mottled Mosaic'
Hedera helix 'Parsley Crested' Hedera helix 'Patricia'
Hedera helix 'Ralf' Hedera helix 'Star'
Hedera helix 'Thorndale' Hedera helix 'Tri-Green and White'
Hedera helix 'Variagata' Heimia salicifolia
Helianthemum 'Dazzler' Helianthemum 'Razzle Dazzle'
Helianthemum nummularium Helianthemum nummularium 'Buttercup'
Helianthemum nummularium 'Cerise Queen' Helianthemum nummularium 'Goldie Lock'
Helianthemum nummularium ssp. obscurum Hemiptelea davidii
Heptacodium miconioides Heritiera actinophyllum
Hesperocyparis sargentii Hesperoyucca whipplei ssp. parishii