Hedychium x 'Daniel Weeks' Hedychium x 'Elizabeth'
Hedychium x 'Gold Flame' Hedychium x 'Kewense'
Hedychium x 'Kinkaku' Hedychium x 'Lemon Beauty'
Hedychium x 'Luna Moth' Hedychium x 'Pink Flame'
Hedychium x 'Pink V' Hedychium x 'White Starburst'
Hedychium chrysoleucum Hedychium coccineum
Hedychium coccineum 'Aurantiacum' Hedychium coronarium
Hedychium cylindricum Hedychium flavescens
Hedychium gardnerianum Hedychium greeni
Hedychium hasseltii Helenium 'Bruno'
Helenium 'Coppelia' Helenium 'Mardi Gras'
Helenium 'Moerheim Beauty' Helenium autumnale
Helenium hoopesii Helenium puberulum
Helianthemum nummularium Helianthemum nummularium 'Buttercup'
Helianthemum nummularium 'Goldie Lock' Helianthus angustifolius
Helianthus angustifolius 'Gold Lace' Helianthus debilis
Helianthus giganteus 'Shiela's Sunshine' Helianthus maximilianii
Helianthus microcephalus Helianthus x multiflorus
Helianthus salicifolius Helianthus salicifolius 'First Light'
Helianthus salicifolius 'Low Down' Helichrysum 'Ruby Cluster'
Helichrysum 'Silver Star' Helichrysum cymosum ssp. cymosum
Helichrysum italicum Helichrysum italicum 'Nana'
Helichrysum italicum ssp. serotinum Helichrysum montanum
Heliconia densiflora 'Fire Flash' Heliconia guyana
Heliconia orthotricha Helictotrichon sempervirens
Helictotrichon sempervirens 'Sapphire' Heliopsis helianthoides
Heliopsis helianthoides 'Ballerina' Heliopsis helianthoides 'Bressingham Doubloon'
Heliopsis helianthoides 'Loraine Sunshine' Heliopsis helianthoides 'Prairie Sunset'
Heliopsis helianthoides 'Summer Nights' Heliopsis helianthoides 'Summer Sun'
Heliopsis helianthoides ssp. scabra Heliopsis helianthoides ssp. scabra 'Gold Greenheart'
Heliopsis helianthoides ssp. scabra 'Golden Plume' Heliotropium amplexicaule
Heliotropium angiospermum Heliotropium arborescens
Heliotropium arborescens 'Atlantis' Heliotropium arborescens 'Marine'
Helleborus x Helleborus x 'Gold Finch'
Helleborus x 'HDC Pink Frost' Helleborus x 'Kingston Cardinal'
Helleborus x 'Royal Heritage™' Helleborus x 'Snow Bunting'
Helleborus 'Walhelivor (Ivory Prince)' Helleborus argutifolius
Helleborus atrorubens Helleborus x ericsmithii 'HGC Maestro'
Helleborus x ericsmithii 'HGC Silvermoon' Helleborus foetidus
Helleborus foetidus 'Variegata' Helleborus niger
Helleborus niger 'HGC Green Corsican' Helleborus niger 'HGC Jacob'
Helleborus niger 'HGC Josef Lemper' Helleborus x nigercors 'Green Heron'
Helleborus orientalis Helleborus orientalis 'Winter Joy Bouquet'
Helleborus x sternii Helleborus x sternii 'Ashwood Garden Strain'
Helleborus x sternii 'Blackthorn' Helleborus x sternii 'Boughton Beauty'
Helleborus torquatus Helleborus viridis
Helonias bullata