| Heliamphora minor x nutans |
| Helianthus annuus 'Ring of Fire' Solros |
| Helianthus tuberosus Jordärtskocka |
| Helichrysum coralloides |
| Helichrysum pagophilum |
| Helicodiceros muscivorus Fläkkalla, svinröv |
| Heliconia 'Olympic Flame' |
| Heliconia stricta |
| Helictotrichon desertorum |
| Heliotropium arborescens Heliotrop |
| Heliotropium arborescens 'Marine' Heliotrop |
| Helleborus cyclophyllus Stor doftjulros |
| Hellenia speciosa Spiralcostus |
| Hemerocallis 'Stella de Oro' Hybriddaglilja |
| Hemerocallis dumortieri Tuvdaglilja |
| Hemerocallis lilioasphodelus Gul daglilja |
| Hemerocallis middendorffii Orangegul daglilja |
| Hemerocallis minor Liten daglilja |
| Hereroa puttkameriana Fläckigt lyrblad |
| Hernandia cordigera |
| Herreria bonplandii |
| Heterocentron elegans Rosenreva |
| Heterotheca villosa |
| Heuchera 'Black Beauty' Hybridalunrot |
| Heuchera 'Lime Marmelade' Hybridalunrot |
| Heuchera sanguinea Blodalunrot |
| Heucherella 'Stoplight' |
| Hevea brasiliensis Gummiträd |
| Hibiscus 'Copper Rose' |
| Hibiscus 'Creole Lady' |
| Hibiscus 'Gerrit Gommer' |
| Hibiscus 'Islamorada Gold' |
| Hibiscus 'Lady Bug' |
| Hibiscus 'Liz' |
| Hibiscus 'Me Oh My Oh' |