Primo Giardino is a mature garden room highlights horticulturally exceptional plants for Northwest gardens.
| Botanical Name | Common Name |
| Abelia x grandiflora ‘Panache’ | Panache Glossy Abelia |
| Acer palmatum ‘Sumi nagashi’ | Sumi nagashi Japanese Maple |
| Acer palmatum ‘Tobiosho’ | Tobiosho Japanese Maple |
| Acer palmatum var. dissectum ‘Tamuke yama’ | Tamuke yama Lace-leaf Japanese Maple |
| Calluna vulgaris ‘Glenlivet’ | Glenlivet Scots Heather |
| Calluna vulgaris ‘Winter Chocolate’ | Winter Chocolate Scots Heather |
| Chamaecyparis obtusa ‘Saffron Spray’ | Saffron Spray Hinoki False-Cypress |
| Cornus stolonifera (sericea) ‘Bud’s Yellow’ |
Yellow-twig Dogwood |
| Corylus avellana ‘Contorta’ | Harry Lauder’s Walking Stick; Contorted Filbert |
| Erica manipuliflora | Autumn Heath |
| Erica x darleyensis ‘Jenny Porter’ | Jenny Porter Dale Darley Heath |
| Euonymus alatus | Winged Euonymus |
| Hebe traversii | Streamside Hebe |
| Juniperus chinensis ‘Plumosa Aurea’ | Golden Plume Chinese Juniper |
| Ophiopogon planiscapus ‘Nigrescens’ | Black Mondo Grass |
| Oxydendrum arboreum | Sourwood, Sorrel Tree |
| Parrotia persica ‘Pendula’ | Pendulous Persian Ironwood |
| Penstemon pinifolius | Pine-leaved Beard Tongue |
| Picea abies ‘Nidiformis’ | Bird’s Nest Norway Spruce |
| Rhododendron nakaharae | Evergreen Azalea |
| Rhododendron x ‘Homebush’ | Homebush Exbury Azalea |
| Rhododendron x ‘Mandarin Lights’ | Mandarin Lights Deciduous Azalea |
| Rhododendron x ‘Ramapo’ | Ramapo Rhododendron |
| Rosa x ‘Robusta’ | Rugosa Rose |
| Rosa x ‘Scabrosa’ | Rugosa Rose |
| Salix integra ‘Hakura Nishiki’ | Dappled Willow |
| Skimmia japonica | Japanese Skimmia |
| Stachys coccinea ‘Pow Wow’ | Pow Wow Texas Betony |
| Stewartia monadelpha | Tall Stewartia; Orange-bark Stewartia |
| Stewartia rostrata | Beaked Stewartia |
| Viburnum davidii | David’s Viburnum |
| Viburnum plicatum f. tomentosum | Double-file Viburnum |
| Viburnum plicatum f. tomentosum ‘Mariesii’ |
Maries Double-file Viburnum |
| Viburnum x bodnantense ‘Charles Lamont’ | Bodnant’s Viburnum |
| Viburnum x juddii | Judd Viburnum |