Rock Garden Area Location Botanical Name Family Type of Plant Bloom Time Zone Rock Garden Abies balsamea 'Nana' Pinaceae Tree 3-6 Abies lasiocarpa 'Arizonica Compacta' Pinaceae Tree 4 Acer palmatum Aceraceae Tree 6-9 Acer palmatum 'Elegans' Aceraceae Tree 6-8 Adiantum aleuticum Pteridaceae Fern 3-8 Allium sp Liliaceae Perennial May Androsace primuloides Primulaceae Perennial Summer 6 Aquilegia discolor Ranunuculaceae Perennial Arabis caucasica Brassicaceae Perennial Spring 4-8 Armeria maritima 'Nifty Thrifty' Plumbaginaceae Perennial 3-9 Bolax gummifera Apiaceae Perennial Summer 5-6 Buxus microphylla 'Kingsville Dwarf' Buxaceae Shrub 6-9 Campanula satorii Campanulaceae Perennial Carex morrowii 'Aureo Variegata' Cyperaceae Grass 7-9 Carex ornithopoda 'Variegata' Cyperaceae Grass 4-8 Cedrus deodara 'Hollandia' Pinaceae Tree 6 Cedrus libani 'Green Knight' Pinaceae Tree 6 Centaurea simplicicaulis Asteraceae Perennial 3-8 Chamaecyparis obtusa 'Coralliformis' Cupressaceae Tree 4-8 Chamaecyparis obtusa 'Hage' Cupressaceae Tree 5 Chamaecyparis obtusa 'Nana Lutea' Cupressaceae Tree 5 Chamaecyparis obtusa 'Reis Dwarf' Cupressaceae Tree Chamaecyparis obtusa 'Stoneham' Cupressaceae Tree 5 Cheilanthes fenderli Adiantaceae Fern 4 Chiastophyllum oppositifolium Crassulaceae Perennial 6-9 Cryptomeria japonica 'Nana' Taxodiaceae Tree 6-9 Cytisus hirsutus Fabaceae Shrub L. Spring 6 Daphne x 'Lawrence Crocker' Thymelaeaceae Shrub Summer 6-9 Dianthus freynii Caryophyllaceae Perennial 6 Enkianthus perulatus Ericaceae Shrub Spring 6-8 Epimedium x versicolor 'Sulphureum' Berberidaceae Shrub Feb/Mar 5-9 Eranthis hyemalis Ranunculaceae Perenial Jan/Feb 4-9 Euonymus japonica 'Rokiljo' Celastraceae Shrub 6 Euphorbia myrsinites (3) Euphorbiaceae Perennial Spr 5-8 Fritillaria acmopetala Liliaceae Perennial 6-8 Fritillaria graeca Liliaceae Perennial 6-9 Fritillaria michailovskyi Liliaceae Perennial 5-8 Fritillaria persica Liliaceae Perennial 6-8 Fritillaria uva-vulpis Liliaceae Perennial 7-9 Fritillaria verticillata Liliaceae Perennial 6-8 Gentiana septemfida Gentianaceae Perennial L. Summer 6-8 Globularia trichosantha Globulariaceae Perennial L. spring 6 Hebe pimeleoides Schrophulariacea Shrub Summer 9-10 Iberis 'Sayana' Brassicaceae Perennial E. Summer 7-9 Ilex crenata 'Dwarf Pagoda' Aquifoliaceae Tree 5 Iris graminea Iridaceae Perennial Spr 6-9 Iris siberica Iridaceae Perennial May/Jun 4-9 Juniperus communis 'Compressa' Cupressaceae Tree 4 Juniperus horizontalis 'Pancake' Cupressaceae Shrub 3-9 Lewisia cotyledon Portulacaceae Perennial Spr 6-8 Lewisia 'Pinkie' Portulacaceae Perennial 6-8 Limonium bellidifolium Plumbaginaceae Perennial E. Summer 7-9 Limonium munitum Plumbaginaceae Perennial 8-9 Magnolia x watsonii Magnoliaceae Tree Apr/May 5-9 Rock Garden Area Menziesia ciliicalyx var. purpurea Ericaceae Shrub Jun 6-9 Narcissus 'Faith' Amaryllidaceae Perennial Narcissus 'Segovia' Amaryllidaceae Perennial Onosma alborosea Boraginaceae Perennial 7-9 Paeonia lutea Paeoniaceae Shrub May 5-8 Paeonia officinalis Paeoniaceae Perennial May 3-9 Parrotia persica Hamamelidaceae Tree Jan/Feb 4-7 Picea abies 'Little Gem' Pinaceae Tree Picea abies 'Repens' Pinaceae Tree 3-8 Picea omorika 'Hexenbesen' Pinaceae Tree 4 Picea pungens 'Glauca Procumbens' Pinaceae Tree 2 Pimelea prostrata Thymelaeaceae Shrub 9-10 Pinus contorta 'Chief Joseph' Pinaceae Tree 4 Pinus parviflora 'Hagaromo' Pinaceae Tree 5 Pinus parviflora 'Miyajima' Pinaceae Tree 5 Podocarpus nivalis Podocarpaceae Shrub 7-10 Polystichum setiferum Dryopteridaceae Fern 6-9 Polystichum setiferum Plumosum- Dryopertidaceae Fern 6-9 Polystichum setiferum Divisilobum group Drypertidaceae Fern 6-9 Pulmonaria angustifolia Boraginaceae Perennial L Spring 4-8 Rhocodendron calostrotum ssp. Calostrotum Ericaceae Shrub Rhododendron calostrotum ssp calostrotum Ericaceae Shrub 6 Rhododendron campylogonum 'Myrtilloides' Ericaceae Shrub Rhododendron cilpinense (?) Ericaceae Shrub May 6 Rhododendron dauricum Ericaceae Shrub Feb 4-8 Rhododendron ferrugineum Ericaceae Shrub Rhododendron ferrugineum Ericaceae Shrub 4 Rhododendron glaucophyllum (2) Ericaceae Shrub 8 Rhododendron haematodes Ericaceae Shrub 7-9 Rhododendron keleticum Ericaceae Shrub 6 Rhododendron kiusianum white form Ericaceae Shrub Spring 6 Rhododendron 'Macrantha' Ericaceae Shrub Rhododendron micranthum Ericaceae Shrub Jun 3 Rhododendron mucronatum 'Delaware Ericaceae Shrub 7-9 Rhododendron pachysanthum Ericaceae Shrub 7-9 Rhododendron tomentosum 'Milky Way' Ericaceae Shrub 2-6 Rhododendron trichostomum 'Rae Berry' Ericaceae Shrub 7 Rhododendron williamsianum (5) Ericaceae Shrub May 7-9 Rhododendron yakushimanum x Ericaceae Shrub Rosa pimpinellifolia Roaceae Shrub Summer 3-9 Saxifraga exarata ssp moschata 'Cloth of Saxifragaceae Perennial L. Spring 5-7 Saxifraga mossy group Saxifragaceae Perennial Summer Saxifraga obtusifolia (oppositifolia?) Saxifragaceae Perennial Saxifraga paniculata var brenifolia Saxifragaceae Perennial 1-6 Sedum makinoi 'Ogon' Crassulaceae Perennial 7 Sedum spurium 'Tricolor' (3) Crassulariaceae Perennial L. Sum 4-9 Sempervivum 'Ashes of Roses' Crassulaceae Perennial 5-9 Sempervivum calcareum 'Sir William Crassulaceae Perennial 5-9 Sempervivum 'Fuzzy Wuzzy' Crassulaceae Perennial 5-9 Sempervivum x 'Hullabalou' Crassulaceae Perennial 5-9 Sequoia sempervirens 'Prostrata' Taxodiaceae Tree 8-9 Shortia uniflora' Grandiflora Rosea' Diapensiaceae Perennial 5-8 Silene aucalis 'White Rabbit' Caryophyllaceae Perennial Summer 3-5 Silene hookeri Caryophyllaceae Perennial L. Summer 5-8 Soldanella montana Primulaceae Perennial E. Spring 3-7 Succisa pratensis 'Alba' Dipsacaceae Perennial Summer/Fall 4-7 Taxus baccata 'Fastigiata' Taxaceae Tree 7-8 Rock Garden Area Tsuga canadensis Pinaceae Tree 4-8 Tsuga canadensis 'Hussai' (sp?) Pinaceae Tree 4-8 Tulipa batalinii 'Apricot Jewel' Liliaceae Perennial Tulipa humilis 'Alba Caerulea Oculata' Liliaceae Perennial Tulipa praestans 'Unicum' Liliaceae Perennial 5 Veronica gentianoides var. glacilis Scrophulariaceae Perennial E. Summer 4-7 Veronica peduncularis 'Georgia Blue' Scrophulariaceae Perennial E. Spring 6-8 X Phylliopsis 'Sugar Plum' Ericaceae Shrub 4-8.