Hebes and their cultivars and hybrids
Below are some of the Hebes and their cultivars and hybrids that are grown in New Plymouth
Hebe is the largest genus of New Zealand shrubs containing almost 80 species, many of which hybridise. It is typically a New Zealand genus and there are only about 100 species known.
Hybridisation between species growing in the wild is not common but when compatible species are in planted in gardens, hybridism is extensive. Many growers and collectors have selected and named these cultivars. Planned breeding of ornamental Hebe cultivars has been happening for a long time. It is thought that the first hybrid was produced in 1845 in Suffolk, England and it is now estimated that there are around 700 hybrid Hebes.
The Royal New Zealand Institute of Horticulture is the International Registration Authority for Hebe and they have been working steadily towards a Register of cultivar names for the genus Hebe for many years. It contains a number of cultivar names which are now of historical interest.
Check species at RNZIH http://www.rnzih.org.nz/pages/imagesHebe.htm
NZ books on Hebes
An Illustrated guide to New Zealand Hebes
by Michael Bayly and Alison Kellow,
Native Hebes
Hebe hulkeana (New Zealand Lilac)
cms_selflink page="hebe-macrocalyx-var-humilis" text="Hebe macrocalyx var. humilis"}
Hebe acutiflora (Northland River Koromiko)
Hebe carnosula
Hebe truncatula
Hebe rigidula
Hebe pinguifolia
Hebe dieffenbachii
Hebe cockayneana
Hebe barkeri (Chatham Island tree hebe)
Hebe adamsii
Hebe Albicans
Hebe armstrongii
Hebe buchananii (Hollow-leaved Hebe)
Hebe cupressoide
Hebe evenosa (Tararua hebe)
Hebe pubescens subsp. sejuncta (Mokohinau Koromiko)
Hebe tairawhiti (Wairoa Koromiko)
Hebe topiaria
Hebe (Koromiko)(Hebe stricta)
Hebe (Hebe diosmifolia)
Hebe divaricata
Hebe hectori
Hebe lycopodioides subsp. lycopodioes 
Hebe macrantha (Large flowered hebe)
Hebe odora (Boxwood hebe)
Hebe townsonii 
Hebe speciosa (Napuka)
Hebe speciosa ‘Variegata’ (‘Tricolor’)
Hebe chathamica
Hebe annulata
Hebe ochracea (Hebe 'James Stirling)
Hebe treadwellii (Hebe 'Bald Knob Ridge')
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Cultivars and hybrids
H. diosmifolia ‘Otari Delight’
Hebe 'Amy'
Hebe ('Wiri Charm')
Hebe 'Heebie Jeebie
Hebe (Ohau)
Hebe (Bel Air) Hebe X speciosa “Bel Air”
Hebe 'First Light'
Hebe (Waireka) Hebe X francisana 'Waireka'
Hebe 'Champagne'
Hebe diosmifolia ‘Minor’
Hebe 'Emerald Gem'
Hebe ‘Marilyn Monroe’
Hebe ‘Orphan Annie’
Hebe 'Black Panther'
Hebe 'Alicia Amherst'
Hebe 'Oratia Beauty'
Hebe 'Pretty in Pink'
Hebe 'Sunset Boulevard'
Hebe 'Jewel of the Nile'
Hebe 'Champion'
Hebe Sunstreak (Hebe hybrida)
Hebe Hartii (Hebe Lavender Spray)
Hebe Gina Maree
References:
Nature guide to the NZ forest by Dawson& Lucas
Eagle's Trees & Shrubs of New Zealand
Eagle's 100 Shrubs & Climbers of NZ
Nayive Plants by L Metcalf
New Zealand in Flower By Alison Evans
Vegetation of Egmont National Park by B Clarkson
Small-leaved shrubs of New Zealand by Wilson& Galloway
The Flora of Great Walks by Richard Ryall
The Gardener's Encyclopaedia of NZ Native Plants
The Royal Horticultural Society A-Z Encyclopaedia of Garden Plants
Mini Guide to the Identification of New Zealand Native Trees by Andrew Crowe
Photographic Guide to Trees of New Zealand by Lawrie Metcalf
Photographic Guide to New Zealand Ferns by Lawrie Metcalfe
New Zealand Small Shrubs and Trees by Murdoch Riley
New Zealand Trees and Ferns by Murdoch Riley
Trees and Shrubs of New Zealand by A. L. Poole and Nancy Adams
Nature Guide to the New Zealand Forest by John Dawson and Rob Lucus
Know your New Zealand Native Plants by Lawrie Metcalf
New Zealand Flowers and Plants in Colour by J. T Salmon
New Zealand Medical Plants Brooker,Cambie,Cooper
New Zealand Gardening A-Z by W. G. Sheat
Hebes by Lawrie Metcalfe
NZ Native Trees by John Dawson & Rob Lucas
An illustrated Guide to New Zealand Hebes by Michael Bayly and Alison Kellow
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