Plant Growing Guides

Rhododendron Nova Zembla

Rhododendron 'Nova Zembla'

Oblong-leaved Rhododendron

Rhododendron oblongifolium

Rhododendron P.J.M.

Rhododendron catawbiense var. P.J.M.

Rhododendron Purple Gem

Rhododendron catawbiense 'Purple Gem'

Ramapo Rhododendron

Rhododendron catawbiense 'Ramapo'

Rhododendron and Azalea

Rhododendron spp.

Rhododendron yakushimanum hybrid

Rhododendron yakushimanum × [various cultivars]

Rhubarb

Rheum rhabarbarum

Rhubarb Chard

Beta vulgaris subsp. vulgaris

Rhubarb Chipman Red

Rheum rhabarbarum 'Chipman Red'

Rhubarb Crimson Red

Rheum rhabarbarum 'Crimson Red'

Rhubarb 'Crimson Red'

Rheum rhabarbarum 'Crimson Red'

Rhubarb 'Crimson Red' / 'MacDonald'

Rheum rhabarbarum

Rhubarb 'Crimson Red Strawberry Surprise'

Rheum rhabarbarum 'Crimson Red Strawberry Surprise'

Rhubarb Glaskin's Perpetual

Rheum rhabarbarum 'Glaskin's Perpetual'

Rhubarb Timperley Early

Rheum rhabarbarum

Rhubarb Victoria

Rheum rhabarbarum 'Victoria'

Currant and Gooseberry

Ribes species

Riccardia (Liverwort)

Riccardia species

Rice Cutgrass

Leersia oryzoides

Riparian herbaceous plants

Various species in riparian zones

Rip Van Winkle Daffodil

Narcissus pseudonarcissus 'Rip van Winkle'

Riverbank Privet

Ligustrum rivulare

River Birch

Betula nigra

Willows and Poplars

Salix spp. and Populus spp.

River Oats

Chasmanthium latifolium

Riviera Lilac Splash

Calibrachoa × hybrida 'Riviera Lilac Splash'

Robbiae

Euphorbia robbiae

Robert (Herb Robert)

Geranium robertianum

Robert Chapman Heather

Calluna vulgaris 'Robert Chapman'

Robin Hill Azalea

Rhododendron 'Robin Hill'

Robustissima Windflower

Anemone × hybrida 'Robustissima'

Roc d'Or

Lactuca sativa var. crispa 'Roc d'Or'

Rock Brake

Cryptogramma crispa

Rock Cotoneaster

Cotoneaster horizontalis

Alpine Rockcress

Arabis alpina subsp. alpina

Rock Cress Variegata

Arabis caucasica 'Variegata'

Rock-dwelling plants

Various species (Saxifraga, Sempervivum, Sedum, Armeria, etc.)

Rocket

Eruca vesicaria

Rocket Mix

Eruca vesicaria subsp. sativa and Diplotaxis species

Rocket Purple

Eruca vesicaria subsp. sativa

Rocket Red

Arugula (Eruca vesicana)

Rocket (Arugula)

Eruca vesicana

Rocket Sylvetta

Diplotaxis tenuifolia

Rocket White

Eruca vesicaria subsp. sativa

Rocket White Roquette

Eruca vesicana subsp. sativa

Rocket Yellow

Eruca vesicaria subsp. sativa

Rock Garden Alpines

Various alpine species (e.g., Sempervivum spp., Saxifraga spp., Dianthus alpinus)