Heliopsis 'Burning Hearts' boasts bicolour yellow and red daisies atop tall black stems with purple foliage.

Heliopsis helianthoides var. scabra 'Luna Roja' has daisy-like flowers in bright yellow-orange to fire-engine red.

Heliopsis 'Variegata Oriole' is a false sunflower with daisy-like yellow blooms with brown eyes and variegated foliage.

Heliopsis 'Yellow Spider' is a false sunflower with semi-double yellow flowers with red centres and dark red foliage and stems.

Heliotrope 'Augusta Lavender' is a tender subtropical heliotrope with long-lasting, fragrant, lavender flowers.

Heliotropium 'Marine' is a tender subtropical heliotrope with long-lasting fragrant, dark purple tubular flowers.

Heliotropium arborescens 'Marino White' is a tender subtropical heliotrope with long-lasting, fragrant, white flowers.

Helleborus argutifolius, the Corsican hellebore, is the largest of all hellebores up to three feet tall with apple green flowers.

Helleborus niger 'Jacob' has slightly fragrant, single pure white flowers in winter and early spring.

Helleborus niger 'Jesko' has large flowers with overlapping petals forming a lovely cupped shape.

Helleborus 'HGC Camelot' has charming pink buds opening to creamy pink flowers.

Helleborus 'Cinnamon Snow' has cinnamon pink buds opening to creamy white flowers highlighted with rose and cinnamon tones.

Helleborus 'HGC Love Bug' is cute and compact with pink flowers. Just like puppies or kittens, resistance is futile.

Helleborus 'HGC Maestro' has pink buds opening to pink and white flowers that age to a lovely mid pink.

Helleborus 'Mahogany Snow' has pink buds open to big ruffled white and pink hellebore flowers aging to mahogany pink.

Helleborus 'HGC Merlin' has pink buds and flowers aging to luscious raspberry purple.

Helleborus 'Pink Frost' is one of the best hellebore introductions in the last decade - masses of pink flowers atop big bold plants.

Helleborus 'Platinum Rose' has pink buds and creamy hellebore flowers aging to dark rose above awesome blue-grey foliage.

Helleborus 'Spring Party' has creamy white blossoms held on rosy stems above gray green leaves veined in silver.

Helleborus 'Champion' has warm, creamy white almost yellowish flowers that glow in the soft spring light.

The big, bold and impressive Helleborus Ice n' Roses Red offers large, outward-facing flowers in a rich, velvety, deep red.

The big, bold and impressive Helleborus Ice n' Roses Bianco offers large, outward-facing flowers in icy white.

The big, bold and impressive Helleborus Ice n' Roses Brunnello offers large, outward-facing flowers in velvety dark red.

The big, bold and impressive Helleborus Ice n' Roses Dark Picotee offers large, outward-facing flowers in white to pink with dark pink picotee edges.