Hamamelis; Halesia; Halimiocistus; Hebe; Hedera; Helichrysum; Hibiscus; Holodiscus; Hydrangea; Hypericum; Hyssopus:
What's your colour preference for the Hamamelis group of shrubs - Witch Hazels. Most are yellow shades, but orange or red are also available - as can be seen in the image of Hamamelis x intermedia Diane.
Hakea: - Half hardy evergreen shrubs with contorted white flowers for acid soils.
Halesia – Snowdrop Tree: - Fully hardy group of large shrubs - then trees. The pendant flowers similar to snowdrops - but upside down.
X Halimiocistus: - Halfway between Cistus and Halimium - Naughty parents! Some useful offspring for the rock garden os container.
Hazel Nut – Corylus: - See Corylus
Helichrysum – The Curry Plant: - The Helichrysum is not to be confused with the Curry LEAF plant. This one is not edible, but has glorious solver foliage and yellow flowers and yes - it smells of curry when brushed against.
Heliotropium – Heliotrope – Cherry Pie: - Normally available as a bedding plant in the colder countries, the heliotrope is a useful - if short-lived - evergreen shrub in the warmer countries.
Hibiscus: - There are hardy and tender varieties of this shrub - each with the same flower types. The tropical ones are larger and showier. the hardy ones are good for late summer and autumn colour.
Hippophae – Sea Buckthorn: - Fully hardy shrub with grey green foliage, is contrasted by the gaudy orange berries. Can be planted almost anywhere - in full sun - but is very useful for seaside planting.
Hoheria: - Not fully hardy shrub, with fragrant cupped white flowers.
Holodiscus: - Hardy shrub which simply adores dry conditions - even in woodland setting. never fails to flower, with plume-like white flowers.
Hyssopus – Hyssop: - Fully hardy dwarf shrub - sometimes clipped into low hedge. aromatic - foliage and flowers. The flowers on this dwarf shrub are blue.