The Scottish Gardenplant Award
| The Scottish Garden Plant Award was published in Garden Plants for Scotland, the one-stop guide to gardening and choosing garden plants for Scotland. Click the image for more details. | |
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Scotland's very varied and particular climate suits a huge variety of plants, but there are a great many that do well further south but struggle in Scotland, because of lack of heat, winter wet or other factors; this includes many plants which have the RHS Award of Garden Merit (AGM). Conversely, many of the best performers in Scotland are not as happy further south - for example, many alpines, meconopsis, and Tropaeolum speciosum. The most serious flaw with the AGM, from a Scottish perspective, is the RHS H4 hardiness rating. This is defined as ‘hardy throughout the British Isles', but in reality many plants with this rating are simply not reliably hardy in colder/inland gardens in England, and many of them are tender in Scotland away from the coast. We decided therefore to create an additional rating for the hardiest plants, so we have created an H5 rating for plants, suitable for cold, inland and high altitude gardens.
The notion of a ‘Scottish Garden Plant Award' grew from these issues. The RHS Plant Finder contains 70,000 plant names. In the face of so many plants on offer, we thought it would be useful to point gardeners in the direction of the most reliable, tried-and-tested plants, which are the best of their type for Scottish gardens. We hope that the award will be used on plant labels in Scotland to help gardeners make the best selection of an often bewildering range of plants. To consider which plants should receive the award, we assembled an impressive group of judges, representing a wide spectrum of Scottish horticultural expertise. Sometimes there was agreement, sometimes not. We now have a list of 500 plants that have been awarded the Scottish Gardenplant Award or SGA. Their hardindess ratings H1-H5 are included. You can be sure that plants listed here with the SGA symbol are a very good starting point for gardeners from one end of Scotland to the other.
The list of Scottish Gardenplant Award plants is also available on several websites including the Royal Caledonian Horticultural Society http://www.royalcaledonianhorticulturalsociety.org/ and Glendoick Gardens (http://www.glendoick.com/)
Bamboos
Fargesia murielae H5
Fargesia murielae 'Simba' H5
Fargesia nitida H5
Phyllostachys nigra H4
Clematis
Clematis alpina H5
Clematis alpina 'Frances Rivis' H5
Clematis 'Bill MacKenzie' (late summer) H4
Clematis 'Hagley Hybrid' H5
Clematis 'Jackmanii' H5
Clematis macropetala 'Markham's Pink' H5
Clematis montana 'Elizabeth' H4
Clematis montana 'Rubens' H4
Clematis montana var. grandiflora H4
Clematis montana var. rubens 'Tetrarose' H4
Clematis 'Mrs Cholmondeley' H4
Clematis 'Nelly Moser' H4
Clematis 'Niobe' H4
Clematis 'The President' H4
Clematis viticella 'Etoile Violette' H5
Conifers
Abies koreana H5
Abies nordmanniana H5
Araucaria araucana H4-5
Cedrus atlantica Glauca Group H5
Cedrus deodara H4
Cedrus libani H4
Chamaecyparis lawsoniana 'Columnaris (C. Glauca') H5
Chamaecyparis lawsoniana 'Ellwoodii' H5
Chamaecyparis lawsoniana 'Ellwood's Gold' H5
Chamaecyparis lawsoniana 'Fletcheri' H5
Chamaecyparis nootkatensis 'Pendula' H5
Chamaecyparis obtusa 'Nana' H5
Chamaecyparis obtusa 'Nana Gracilis' H5
Chamaecyparis pisifera 'Boulevard' H5
Chamaecyparis pisifera 'Filifera Aurea' H5
Cryptomeria japonica H5
Cupressocyparis leylandii H5
Cupressocyparis leylandii ‘Castlewellan' H5
Ginkgo biloba H5
Juniperus × pfitzeriana 'Old Gold' H5
Juniperus × pfitzeriana 'Pfitzeriana H5
Juniperus communis 'Compressa' H5
Juniperus communis 'Green Carpet' H5
Juniperus communis 'Hibernica' H5
Juniperus communis 'Repanda' H5
Juniperus squamata 'Blue Carpet' H5
Juniperus squamata 'Blue Star' H5
Juniperus virginiana 'Grey Owl' H5
Larix decidua H5
Metasequoia glyptostroboides H5
Picea abies 'Nidiformis' H5
Picea breweriana H5
Picea omorika H5
Picea pungens 'Globosa' H5
Picea pungens 'Hoopsii' H5
Picea pungens 'Koster' H5
Pinus mugo 'Mops' H5
Pinus sylvestris H5
Pinus wallichiana H5
Sequoiadendron giganteum H5
Taxus baccata H5
Thuja occidentalis 'Rheingold' H5
Thuja occidentalis 'Smaragd' H5
Tsuga heterophylla H5
Ferns
Adiantum pedatum H4-5
Asplenium scolopendrium H4-5
Asplenium trichomanes H4-5
Athyrium filix-femina H5
Blechnum penna-marina H4-5
Blechnum spicant H5
Dryopteris erythrosora H4
Dryopteris filix-mas H5
Dryopteris filix-mas 'Cristata' H5
Matteuccia struthiopteris H4-5
Osmunda regalis H5
Polystichum polyblepharum H5
Fruit Trees
Apple 'Bramley's seedling' H4-5
Apple 'Discovery' H4-5
Apple 'Egremont Russet' H4-5
Apple 'Fiesta' H4-5
Apple 'Howgate Wonder' H4-5
Apple 'James Grieve' H4-5
Apple 'Katy' (Katja) H4-5
Apple Worcester Permain H4-5
Cherry 'Morello' H4-5
Cherry 'Stella' H4-5
Pear 'Concorde' H4-5
Pear 'Conference' H4-5
Plum 'Czar' H4-5
Grasses
Acorus gramineus Hakuro-nishiki H5
Acorus gramineus 'Ogun' H5
Acorus gramineus 'Variegatus' H5
Briza media H5
Calamagrostis x acutiflora 'Overdam' (v) H4
Carex buchananii H3-4
Carex comans 'Frosted Curls' H3-4
Carex oshimensis 'Evergold' (v) H4
Luzula nivea H4
Milium effusum 'Aureum' H4
Stipa gigantea H4
Roses
Rosa 'Albertine' (Ra) H5
Rosa 'Alec's Red' H5
Rosa 'Arthur Bell' (F) H5
Rosa 'Blanche Double de Coubert'(Ru) H5
Rosa 'Félicité Perpétue' (Ra) H5
Rosa filipes 'Kiftsgate' (Ra) H5
Rosa 'Fru Dagmar Hastrup' (Ru) H5
Rosa 'Frühlingsgold' (PiH) H5
Rosa Gertrude Jekyll ='Ausbord' (PBR) (S) H5
Rosa 'Golden Showers' (Cl) H5
Rosa Iceberg = 'Korbin' (F) H5
Rosa 'Madame Alfred Carrière' (N) H5
Rosa 'Rambling Rector' (Ra) H5
Rosa rugosa 'Alba' (Ru) H5
Rosa rugosa 'Rubra' (Ru) H5
Rosa 'Silver Jubilee' (HT) H5
Rosa xanthina 'Canary Bird' (S) H5
Rosa 'Zephirine Drouhin' H5
Shrubs
Actinidia kolomikta H4
Amelanchier lamarckii H5
Arbutus unedo H4
Berberis darwinii H4
Berberis thunbergii f. atropurpurea 'Rose Glow' (v) H4-5
Berberis x stenophylla H4
Buddleja davidii 'Black Knight' H5
Buddleja davidii 'Empire Blue' H5
Buddleja davidii 'Royal Red' H5
Buddleja davidii 'White Profusion' H5
Buddleja 'Lochinch' H4
Buddleja x weyeriana 'Sungold' H4
Calluna vulgaris 'Beoley Gold' H4-5
Calluna vulgaris 'Kinlochruel' (d) H4-5
Calluna vulgaris 'Robert Chapman' H4-5
Calluna vulgaris 'Wickwar Flame' H4-5
Camellia x williamsii 'Anticipation' H4
Camellia x williamsii 'Debbie' H4
Camellia x williamsii 'Donation' H4
Cassiope 'Muirhead' H4
Cercidiphyllum japonicum H4
Chaenomeles x superba 'Crimson and Gold' H5
Chaenomeles x superba 'Knap Hill Scarlet' H5
Chaenomeles x superba 'Pink Lady' H5
Choisya ternata H3-4
Choisya ternata Sundance = 'Lich' (PBR) H3-4
Cornus alba 'Aurea' H5
Cornus alba 'Elegantissima' (v) H5
Cornus alba 'Sibirica' H5
Cornus alba 'Spaethii' (v) H5
Cornus canadensis H4
Cornus kousa var. chinensis H4
Cornus sericea 'Flaviramea' (C. stolonifera 'Flaviramea') H4
Corylus avellana Contorta H5
Corylus maxima 'Purpurea' (F) H5
Cotinus coggygria 'Royal Purple' H4
Cotinus ‘Grace' H4
Cotoneaster dammeri H5
Cotoneaster frigidus 'Cornubia' H4
Cotoneaster horizontalis H5
Cotoneaster salicifolius 'Rothschildianus' H4
Crinodendron hookerianum H3
Cytisus battandieri H3
Cytisus 'Lena' H4
Cytisus x praecox 'Allgold' H4
Daboecia cantabrica subsp. scotica 'William Buchanan' H4
Daphne bholua 'J. Postill' H3-4
Daphne cneorum 'Eximia' H4
Daphne tangutica H4
Daphne tangutica Retusa Group H4
Desfontainia spinosa H3
Deutzia x hybrida 'Strawberry Fields' H5
Elaeagnus pungens Maculata H4
Elaeagnus x ebbingei 'Gilt Edge' (v) H4
Elaeagnus x ebbingei 'Limelight' H4
Embothrium coccineum H3
Enkianthus campanulatus H5
Erica carnea 'Ann Sparkes' H4-5
Erica carnea 'Foxhollow' H4-5
Erica carnea 'Myretoun Ruby' H4-5
Erica carnea 'Springwood White' H4-5
Erica carnea 'Vivellii' H4-5
Escallonia 'Apple Blossom' H3
Escallonia 'Iveyi' H3
Eucryphia x nymansensis 'Nymansay' H4
Euonymus alatus H5
Euonymus europaeus 'Red Cascade' H5
Euonymus fortunei 'Emerald Gaiety' (v) H5
Euonymus fortunei 'Emerald 'n' Gold' (v) H5
Exochorda x macrantha 'The Bride' H5
Fothergilla major H4
Garrya elliptica 'James Roof' (m) H4
Genista lydia H4
Griselinia littoralis H3
Hamamelis mollis H5
Hamamelis x intermedia 'Pallida' H5
Hebe ochracea 'James Stirling' H4
Hebe pinguifolia 'Pagei' H4
Helianthemum 'Henfield Brilliant' H4
Hippophae rhamnoides H4-5
Humulus lupulus 'Aureus' H4-5
Hydrangea arborescens 'Annabelle' H4-5
Hydrangea paniculata 'Grandiflora' H5
Hydrangea petiolaris (H. anomala ssp. petiolaris) H4-5
Hydrangea 'Preziosa' (syn. serrata 'Preziosa') H4-5
Hydrangea quercifolia H3-4
Hypericum 'Hidcote' H4
Ilex aquifolium H4
Ilex aquifolium 'Ferox Argentea'(m/v) H4
Ilex aquifolium 'J.C. van Tol' (f/m) H4-5
Ilex aquifolium 'Silver Queen' (m/ v) H4
Jasminum nudiflorum H4-5
Kolkwitzia amabilis 'Pink Cloud' H5
Lavandula angustifolia 'Hidcote' H4
Leycesteria formosa H4
Lonicera japonica 'Halliana' H5
Lonicera nitida 'Baggesen's Gold' H4
Lonicera periclymenum 'Belgica' H4-5
Lonicera periclymenum 'Graham Thomas' H4-5
Lonicera periclymenum 'Serotina' H4-5
Magnolia stellata H4-5
Magnolia stellata 'Waterlily' H4-5
Magnolia 'Susan' H4-5
Magnolia wilsonii H4-5
Mahonia x media 'Charity' H4
Olearia x haastii H4
Osmanthus delavayi H4
Pachysandra terminalis 'Green Carpet' H4
Pachysandra terminalis 'Variegata' (v) H4
Paeonia ludlowii (P. lutea var ludlowii) H4-5
Parrotia persica H4
Parthenocissus quinquefolia H5
Parthenocissus tricuspidata H5
Philadelphus 'Beauclerk' H5
Philadelphus 'Belle Etoile' H4-5
Philadelphus 'Manteau d'Hermine' (d) H4
Philadelphus 'Virginal' H5
Phormium tenax H3
Photinia x fraseri 'Red Robin' H3-4
Pieris 'Flaming Silver' (v) H4
Pieris 'Forest Flame' H4
Pieris japonica 'Little Heath' (v) H5
Pieris japonica 'Mountain Fire' H5
Potentilla fruticosa 'Abbotswood' H5
Potentilla fruticosa 'Daydawn' H5
Potentilla fruticosa 'Elizabeth' H5
Potentilla fruticosa 'Red Ace' H5
Prunus laurocerasus 'Otto Luyken' H4-5
Pyracantha Saphyr Rouge = Cadrou' (PBR) H4
Rhododendron 'Blue Tit' (Magor Form) H4-5
Rhododendron 'Christmas Cheer' H4-5
Rhododendron 'Curlew' H4
Rhododendron 'Fastuosum Flore Pleno' (d) H5
Rhododendron 'Gibraltar' (A) H5
Rhododendron 'Ginny Gee' H5
Rhododendron 'Gomer Waterer' H5
Rhododendron luteum (A) H5
Rhododendron 'Nobleanum' H4-5
Rhododendron 'Praecox' H4
Rhododendron 'Ptarmigan' H4
Rhododendron 'Ramapo' H5
Rhododendron yakushimanum H5
Rhus typhina H5
Ribes sanguineum 'King Edward VII' H5
Ribes sanguineum 'Pulborough Scarlet' H5
Salix 'Boydii' (f) H5
Salix hastata 'Wehrhahnii' (m) H5
Salix lanata H5
Salix reticulata H5
Skimmia japonica 'Rubella' (m) H4
Spiraea nipponica 'Snowmound' H5
Syringa meyeri 'Palibin' H5
Syringa vulgaris 'Madame Lemoine' (d) H5
Viburnum davidii (m & f) H4
Viburnum plicatum f. tomentosum 'Mariesii' H4
Viburnum tinus 'Eve Price' H4
Viburnum x bodnantense 'Dawn' H4
Vinca major 'Variegata' (v) H5
Vitis coignetiae H4
Weigela florida 'Foliis Purpureis' H5
Weigela 'Florida Variegata' (v) H5
Yucca filamentosa H4
Trees
Acer campestre H5
Acer davidii 'George Forrest' H4
Acer griseum H4
Acer palmatum 'Bloodgood' H4
Acer palmatum 'Ôsakazuki' H4
Acer palmatum var. dissectum H4
Acer palmatum var. dissectum 'Garnet' H4
Acer platanoides 'Crimson King' H5
Aesculus hippocastanum H5
Betula utilis var. jacquemontii H5
Crataegus laevigata 'Paul's Scarlet' (d) H5
Davidia involucrata H4
Eucalyptus pauciflora subsp. niphophila H4
Fagus sylvatica H5
Fagus sylvatica 'Dawyck' H5
Fraxinus excelsior H5
Laburnum × watereri 'Vossii' H5
Malus 'John Downie' (C) H5
Malus x zumi 'Golden Hornet' H5
Prunus 'Amanogawa' H4-5
Prunus avium H5
Prunus avium 'Plena' (d) H5
Prunus cerasifera 'Nigra' H5
Prunus incisa 'Kojo-No-Mai' H4-5
Prunus padus 'Watereri' H5
Prunus sargentii H5
Prunus serrula H4-5
Prunus 'Taihaku' H4-5
Prunus x subhirtella 'Autumnalis' H5
Prunus x subhirtella 'Autumnalis Rosea' H5
Pyrus salicifolia 'Pendula' H5
Quercus robur H5
Quercus rubra H5
Sorbus aria 'Lutescens' H5
Sorbus cashmiriana H5
Sorbus hupehensis H5
Sorbus 'Joseph Rock' H4-5
Sorbus koehneana (S. fruticosa 'Koehneana') H5
Sorbus reducta H5
Sorbus vilmorinii H5
Perennials
Acanthus mollis H4
Acanthus spinosus L. H4
Achillea filipendulina 'Cloth of Gold' H4
Achillea filipendulina 'Gold Plate' H4
Achillea 'Moonshine' H3
Achillea ptarmica'The Pearl' (clonal) H5
Aconitum 'Bressingham Spire' H5
Aconitum carmichaelii 'Arendsii' H5
Aconitum 'Ivorine' H5
Aconitum 'Spark's Variety' H5
Actaea simplex (Atropurpurea Group) 'Brunette' H5
Agapanthus campanulatus var. albidus H3
Agapanthus Headbourne hybrids H3-4
Ajuga reptans 'Atropurpurea' H5
Ajuga reptans 'Burgundy Glow' H5
Ajuga reptans 'Catlin's Giant' H5
Alchemilla mollis H5
Alstroemeria Ligtu hybrids H3-4
Alyssum montanum H4-5
Alyssum saxatile H4-5
Anaphalis margaritacea H5
Anaphalis triplinervis H5
Anemone × hybrida 'Honorine Jobert' H5
Anemone × hybrida 'Königin Charlotte' H5
Anemone × hybrida 'September' (S. Charm) H5
Anemone blanda H5
Anemone hupehensis 'Hadspen Abundance' H5
Anemone nemorosa H5
Anemone nemorosa 'Allenii' H5
Anemone nemorosa 'Robinsoniana' H5
Anemone rivularis H5
Anemone trullifolia H4
Anthemis 'E.C. Buxton' H3-4
Aquilegia vulgaris var. stellata 'Nora Barlow' (Barlow Series) (d) H5
Armeria juniperifolia 'Bevan's Variety' H4
Armeria maritima 'Vindictive' H4
Artemisia ludoviciana 'Silver Queen' H4
Aruncus dioicus (m) H5
Aster × frikartii 'Mönch' H5
Aster alpinus H3
Aster amellus 'King George' H5
Astilbe 'Bressingham Beauty' H5
Astilbe chinensis var. pumila H5
Astilbe 'Fanal' (× arendsii) H5
Astilbe 'Rheinland' (japonica hybrid) H5
Astilbe 'Sprite' (simplicifolia hybrid) H5
Astilbe 'Willie Buchanan' H5
Astrantia major 'Claret' H5
Astrantia major 'Ruby Wedding' H5
Bergenia 'Bressingham White' H3-4
Bergenia cordifolia 'Purpurea' H4
Bergenia 'Silberlicht' H4
Brunnera macrophylla H4
Brunnera macrophylla Jack Frost' H4
Caltha palustris H5
Caltha palustris 'Alba' H5
Caltha palustris 'Flore Pleno' (d) needs boggy soil H5
Campanula carpatica Blue Clips/Blau Clips H5
Campanula glomerata 'Superba' H5
Campanula lactiflora 'Alba' H5
Glendoick Gardens Ltd & Glendoick Garden Centre
Perth PH2 7NS, Scotland.
Rhododendrons and Azaleas
Established 1953. Mail Order, Export, Garden Centre & Cafe-Foodhall
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