Hakenochloa macra 'Aureola' AGM

x Halimiocistus sahucii

Hebe 'Caledonia' AGM

Hebe 'Carl Teschner'

Hebe 'Great Orme' AGM

Hebe 'Marjorie'

Hebe pinguifolia 'Pagei'

Hebe 'Youngii' AGM

= 'Carl Teschner'

Hedera helix 'Caecilia' AGM

= H. helix 'Clotted Cream'

Hedera helix 'Eva'

English ivy

Hedera helix 'Glacier' AGM

English ivy

Hedera helix 'Gold Heart'

English ivy

Hedera helix 'Golden Ingot' AGM

English ivy

Hedera hibernica 'Sagittifolia'

Needlepoint ivy

Helenium autumnale 'Helena Rote Toene'

Helen's flower

Helenium autumnale 'Rot-gold hybrids'

Selected colours

Helenium 'Butterpat' AGM

Helen's flower

Helenium 'Moerheim Beauty' AGM

Helen's flower

Helenium 'Rubinzwerg' AGM

Helen's flower

Helenium 'Tip Top'

Helen's flower

Helenium 'Waldtraut' AGM

Helen's flower

Helianthemum 'Golden Queen'

Rock rose

Helianthemum 'Lawrenson's Pink'

Rock rose

Heliopsis heliantoides var. scabra 'Sommernachte'

= 'Summer Nights', Ox eye

Heliopsis heliantoides var. scabra 'Sommersonne'

= 'Summer Sun', Ox eye

Hemerocallis 'Berlin Red' AGM

Day lily

Hemerocallis 'Bonanza'

Day lily

Hemerocallis 'Catherine Woodbery'

Day lily

Hemerocallis fulva 'Green Kwanso'

Day lily

Hemerocallis 'Gentle Shepherd'

Day lily

Hemerocallis 'Little Wine Cup'

Day lily

Hemerocallis 'Marion Vaughn' AGM

Day lily

Hemerocallis 'Pink Damask' AGM

Day lily

Hemerocallis 'Ruffled Apricot'

Day lily

Hemerocallis 'Stella D'Oro' AGM

Day lily

Hemerocallis 'Stoke Poges' AGM

Day lily

Heuchera 'Bloodvein'

Coral Bells

Heuchera 'Bressingham Hybrids'

Coral Bells

Heuchera 'Can Can' AGM

Coral Bells

Heuchera 'Cascade Dawn'

Coral Bells

Heuchera 'Cherries Jubilee'

Coral Bells

Heuchera 'Chocolate Ruffles'

Coral Bells

Heuchera 'Creme Brulee'

Coral Bells

Heuchera cylindrica 'Greenfinch'

Coral Bells

Heuchera 'Leuchtkafer' (Firefly)

Coral Bells

Heuchera micrantha var. diversifolia 'Bressingham Bronze'

Coral Bells

Heuchera 'Plum Pudding'

Coral Bells

Heuchera 'White Marble'

Coral Bells

Heuchera 'White Spires'

Coral Bells

x Heucherella alba 'Bridget Bloom' 

x Heucherella 'Kimono' AGM (PBR)

Holcus mollis 'Albovariegatus'

Hordeum jubatum

Squirrel tail grass

Hosta (Tardiana Gp) 'Halcyon' AGM

Plaintain lily

Hosta 'August Moon'

Plaintain lily

Hosta 'Big Daddy'

Plaintain lily

Hosta 'Birchwood Parky's Gold'

Plaintain lily

Hosta fortunei var. albopicta AGM

Plaintain lily

Hosta fortunei var. aureomarginata AGM

Plaintain lily

Hosta 'Francee' AGM

Plaintain lily

Hosta 'Frances Williams' AGM

Plaintain lily

Hosta 'Gold Standard'

Plaintain lily

Hosta 'Golden Tiara' AGM

Plaintain lily

Hosta 'Halcyon' AGM

Plaintain lily

Hosta 'Patriot'

Plaintain lily

Hosta 'Royal Standard' AGM

Plaintain lily

Hosta 'Shade Fanfare' AGM

Plaintain lily

Hosta 'So Sweet'

Plaintain lily

Hosta 'Stiletto'

Plaintain lily

Hosta 'Sum & Substance' AGM

Plaintain lily

Hosta 'Wide Brim' AGM

Plaintain lily

Houttuynia cordata 'Boo-Boo'

Traffic light plant

Houttuynia cordata 'Chameleon'

Traffic light plant

Houttuynia cordata 'Joker's Gold'

Traffic light plant

Hydrangea anomala subsp. petiolaris AGM

Climbing hydrangea

Hydrangea arborescens 'Annabelle' AGM

Common hydrangea

Hydrangea macrophylla 'Bouquet Rose'

Mophead hydrangea

Hydrangea macrophylla 'King George'

Common hydrangea

Hydrangea macrophylla 'Lanarth White' AGM

Lacecap hydrangea

Hydrangea macrophylla 'Mariesii Perfecta' AGM

Lacecap hydrangea

Hydrangea macrophylla 'Mme Emily Mouilliere'

Lacecap hydrangea

Hydrangea macrophylla 'Pia'

Common hydrangea

Hydrangea paniculata 'Grandiflora' AGM

Hydrangea paniculata 'Kyushu' AGM

Hydrangea quercifolia AGM

Oak-leaved hydrangea

Hydrangea serrata 'Bluebird' AGM

Hymenoxys hoopsii

Hypericum androsaemum x 'Albury Purple'

Hypericum 'Hidcote' AGM

St. John's Wort

Hypericum x moserianum 'Tricolour'

St. John's Wort

Hypericum x moserianum 'Variegatum'

St. John's Wort