FROST HARDINESS

We have many clients who are wanting clear information regarding plants that can not only withstand frost but temperatures below zero. I hope the following information will help those who suffer with these severe elements. Where we know the minus temperatures we will state them. We have put beside the other plants HF which stands for Heavy Frost - I do not know the precise minus temperature that these plants can go down to. If anyone has any information to add to this page, we would love to hear from you.

Abbreviations:
F = Frost hardy;  HF = Heavy frost; FS = Frost sensitive.

Abelia varieties HF
Abutilon amplum HF
Abutilon geranioides HF
Abutilon muticum HF
Abutilon otocarpum HF
Acacia species HF
Achillea varieties HF
Aconitum napellus HF (Dormant)
Acorus HF
Adenanthos HF
Agapanthus HF May show some discolouration to foliage
Agastache varieties HF
Agonis HF
Akebia HF But will become semi deciduous
Albizzia varieties -12 HF
Alcea varieties HF
Alonsoa Warscewicii HF
Alyogyne varieties HF and to -6
Alyosia triphylla HF
Angelica atropurpurea HF
Anigozanthus SF But foliage will discolor
Anigozanthus Big Red HF
Anigozanthus manglessii HF
Anisodontea capensis HF
Antirrhinum - hispanicum HF
Applemint HF
Aquebia quinata HF
Aquilegia varieties HF
Arabis caucasica HF
Arctosis varieties HF
Arenaria montana HF
Armeria varieties HF
Artemisia varieties HF
Asarina procumbens lemon souffle HF
Asclepias varieties HF
Astartea HF - Can also take waterlogged soil or dry
Atriplex hortensis (Red orache) HF
Aucuba -5
Aurinia saxatile HF
Babiana Stricta HF
Bacopa varieties HF
Banksia species HF
Bauhinia -3 only once established
Bay tree - Laurus Nobilis HF
Belladonnas HF
Berberidopsis carolina HF
Bergamont HF
Bergamont citriodora SF
Betula pendula HF
Borage HF
Brachycombe varieties HF
Brachysema lanceolata -5
Brachysema sericea HF
Brachychiton varieties HF
Buddleja varieties HF
Buxus varieties HF
Callistemon varieties HF
Calocephalus brownii HF
Calothamnus varieties HF
Calytrix tetragona HF
Camellia varieties HF
Campanula varieties HF
Caraway HF
Carex HF
Cassia artemisiodes -5
Cassia nemophila -5
Catnip HF
Ceanothus varieties HF
Centaurea varieties HF
Centranthus HF
Cerastium tomentosum HF
Chamaecyparis varieties HF
Chamelaucim Species HF
Cheiranthus varieties HF
Chelone oblique HF
Chervil-anthriscus cerefolium HF
Ceanothus HF
Ceratostigma -5 Can withstand moist soil also
Choisya ternata -10 HF
Chorizema -9 But may have some leaf discolor
Chrysanthemums HF
Cistus -9 HF
Clianthus HF
Coleonema HF
Convolvus cneorum HF
Convolvulus sabaticus HF
Coprosma kirkii variegated HF
Cordyline Australis HF
Coriander HF
Correa varieties HF
Corydalis Wilsonii HF
Cotoneaster HF
Crowea exalata HF
Cuppressocyparis varieties HF
Curry plant HF
Cymbalaria muralis HF
Cyrtanthus varieties HF
Cytisus varieties HF
Dactylis glomerata-Catgrass HF
Daisy varieties HF
Dampiera varieties HF
Dandelion red ribbon HF
Daphne -8
Darwinia varieties HF
Deutzia varieties HF
Dianella HF
Dianthus varieties HF
Diascia varieties HF
Dierama pulcherrimum - fairy fishing rods HF
Dietes varieties HF
Digitalis lutea - Dwarf perennial foxglove HF
Dodonea purpurea HF
Dranuculus vulgaris HF
Echinops ritro HF
Echium wildpretti HF
Epacris varieties HF
Eremophila varieties HF
Erepsia pillansii HF
Erica cerinthioides HF
Erigeron karvinkianus-seaside daisies HF
Eriostemon myoporoides HF
Erodium varieties HF
Escallonia -8 HF
Eschsoltzia varieties HF
Euonymus fortunei HF
Euphorbia varieties HF
Euryops -2 HF
Eutaxia species -6 HF
Euyonymus silver pillar HF
Felicia varieties -3 HF
Fenugreek HF
Festuca glauca HF
Fraxinus exselcior - common ash HF
Gaillardia varieties HF
Gaura varieties HF
Gazania varieties HF
Genista varieties HF
Geranium varieties HF
Geum varieties HF
Gossypium varieties HF
Grevillea varieties HF
Hakea species -7 HF
Hardenbergia violacea rosea HF
Hebe varieties HF
Helianthemum varieties HF
Helichrysum 'schweffellicht' HF
Hemiandra pungens HF
Hibbertia varieties HF
Hibiscus varieties HF
Homoranthus varieties HF
Hymenospermum can grow up to 1000 - 3000 feet altitude
Iberis varieties HF
Iris dwarf HF
Iris unguicularis HF
Isotoma axillaris/Solenopsis axillaris HF
Ixodia acheilleiodes 'compacta' HF
Jasminum polyanthemum HF
Kennedia varieties HF
Knautia macedonica HF
Kniphofia varieties HF
Kunzea varieties HF
Lagunaria patersonii HF
Laperirousia crenata HF
Larkspur mixed HF
Laurus nobilis HF
Lavandula HF
Lavatera varieties HF
Lavendar varieties HF
Lechenaultia varieties HF
Lemon verbena -3
Leonotis leonorus -2 HF
Lepechina hestata -8 HF
Leptospermum varieties HF
Leucadendron varieties HF
Leucophyta brownii-cushion bush HF
Ligustrum undulatum HF
Limonium varieties HF
Linaria varieties HF
Lomandra varieties HF
Lonicera nitida varieties HF
Lovage HF
Luma apiculata HF
Lunaria varieties HF
Lupin varieties HF
Lychnis varieties HF
Mahonia varieties -10
Melaleuca varieties HF
Mandevilla laxa HF
Melaleuca varieties HF
Meulenbeckia complexa HF
Micromyrtus ciliata HF
Mondo grass HF
Murraya exotica/paniculata HF
Myoporum varieties HF
Nemesia varieties HF
Nemophila insignus HF
Nerine HF
Nerium -5 HF
Nigella HF
Oenothera HF
Oleander white HF
Olearia phlogapappa HF
Ophiopogon japonicus nana - Dwarf mondo grass HF
Orthrosanthus multiflorus HF
Osteospermum varieties HF
Papaver varieties HF
Parochetus communis HF
Patersonia varieties HF
Paulownia -12 HF
Pelargonium varieties HF
Pennisetum alopecuroides - swamp foxtail HF
Penstemon varieties HF
Pentapterygium serpens or Agapetes serpens HF
Philadelphus varieties HF
Phlomis russelliana HF
Phlox varieties HF
Phormium varieties -5 HF
Photina varieties HF
Phygelius varieties HF
Piemela varieties HF
Pittosporum varieties HF
Poa varieties HF
Poppy varieties HF
Potentilla varieties HF
Prostanthera varieties HF
Prunus varieties HF
Punica -8 HF
Rehmannia angulata - Chinese foxglove HF
Ribes sanguineum -10
Romneya coulteri HF
Rose banksia - double white HF
Rosemary varieties -5 HF
Sage HF
Salix chinensis HF
Salvia africana lutea HF
Salvia apiana -2
Salvia azurea HF (Winter dormant)
Salvia buchananii HF
Salvia cacaliifolia to zero
Salvia chameadryoides HF
Salvia chamelaeagnana HF
Salvia disermis HF
Salvia lanceolata HF
Salvia omaho gold -2
Salvia scabra HF
Salvia sineolensis -2
Santolina chamaecyparissus- Cotton lavender HF
Saroccocca confusa HF
Scabiousa atropurpurea mixed HF
Schinus molle HF
Seaside daisy HF
Selago densiflorus HF
Senecio varieties HF
Shasta daisy HF
Sisrynchium varieties HF
Sollya HF
Sphaeralcea priscilla pink HF
Stachys varieties HF
Statice suworowii HF
Stock perennial HF
Sutera/bacopa mauve HF
Syringa josikaea HF
Telopea -8
Tecomaria -2
Teucruim varieties HF
Thomasia varieties HF
Thryptomene varieties HF
Thyme varieties HF
Trachelium coeruleum HF
Tritellia HF
Tulbaghia varieties HF
Verbascum varieties HF
Verbena varieties HF
Veronica varieties HF
Verticordia varieties HF
Viburnum varieties HF
Virgilla capensis HF
Vinca Elizabeth cran HF
Vinca minor HF
Viola HF
Wall flower HF
Watsonias HF
Weigela HF
Westringia varieties HF
Wormwood powis castle HF
Zantedeschia childsiana - Dwarf Arum lily HF
Zephyranthes candida HF
<p><u>SUCCULENTS tolerant to heavy frosts</u>:</p>
<p>Adromischus
Aloe species (some)
Astrophyllum
Cotyledon orbiculata
Cotyledon orbiculata green form
Echevaria apricot
Echevaria black prince
Echevaria glauca
Echevaria globosum
Echevaria setosa (foliage may spot slightly)
Echevaria turgida
Fenestraria aurantiaca
Graptoveria
Graptoveria bronze
Pachyphytum moonstones HF
Pig Face
Sedevaria HF
Sedum acre
Sedum adolphii - Pats pink
Sedum alboriseum mediovariegatum (dormant)
Sedum alboroseum (dormant)
Sedum altissimum
Sedum Bertram Anderson (dormant)
Sedum brevifolium
Sedum bronze carpet
Sedum Cappa blanco
Sedum cauticola 'lidakense' (dormant)
Sedum coccineum
Sedum dasyphyllum
Sedum globosum
Sedum goldmound (Sedum mexicanum aureum)
Sedum kamshaticum variegated
Sedum lineare variegatum
Sedum mexicanum
Sedum mexicanum aureum
Sedum mexicanum cristatum
Sedum origanum
Sedum potosinum
Sedum reflexum tripmadam
Sedum repestre blue spruce
Sedum rubrotinctum (foliage may spot slightly)
Sedum rupestre blue spruce
Sedum sexangulare
Sedum shorbus blut
Sedum sieboldii
Sedum spathlifolium purpureum
Sedum spectabile (dormant)
Sedum spectabile variegated (dormant)
Sedum spurium roseum/purpureum
Sedum spurium stonecrop
Sedum spurium variegatum
Sedum stonecrop
Sedum tartaranowii 'Sunset Cloud' (dormant)
Sedum telephium 'Autumn joy' (dormant)
Sedum telephium 'Gooseberry Fool' (dormant)
Sedum telephium hestor (dormant)
Sedum telephium 'Matrona' (dormant)
Sedum telephium Mohrchen (dormant)
Sedum telephium 'Purple Emperor' (dormant)
Sedum telephium ruprechtii (dormant)
Sedum Vera Jamieson (dormant)
Sempervirens
Sempervirum montanum green
Sempervirum montanum red form
Sempervivum arachnoides
Sempervivum guiseppe
Sempervivum montanum
Sempervivum montanum green form
Senecio serpens (foliage may spot slightly)
Senecio serpens dwarf (foliage may spot slightly)
Trichodiadema Densum