Plant Growing Guides

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 'Canada Red'

Rheum rhabarbarum 'Canada Red'

Rhubarb 'Canada Red' Valentine

Rheum rhabarbarum 'Canada Red' Valentine

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 'Timperley Early'

Rheum rhabarbarum 'Timperley Early'

Rhubarb Victoria

Rheum rhabarbarum 'Victoria'

Rialto Tomato

Solanum lycopersicum 'Rialto'

Currant and Gooseberry

Ribes species

Riccardia grossetana

Riccardia grossetana

Riccardia Moss

Riccardia chamedryfolia

Riccardia (Liverwort)

Riccardia species

Riccia

Riccia fluitans

Rice Cutgrass

Leersia oryzoides

Riesentraube Tomato

Solanum lycopersicum 'Riesentraube'

Riesling

Vitis vinifera subsp. vinifera

Ring of Fire Pepper

Capsicum annuum 'Ring of Fire'

Ring of Fire Pepper

Capsicum annuum 'Ring of Fire'

Ring of Fire Sunflower

Helianthus annuus 'Ring of Fire'

Rio Grande Bean

Phaseolus vulgaris

Riparia Grape

Vitis riparia

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.

Riviera Tomato

Solanum lycopersicum 'Riviera'

Riviera Lilac Splash

Calibrachoa × hybrida 'Riviera Lilac Splash'

Robert (Herb Robert)

Geranium robertianum

Robert Bloom Coneflower

Echinacea purpurea 'Robert Bloom'

Robert Chapman

Sempervivum 'Robert Chapman'

Robert Chapman Heather

Calluna vulgaris 'Robert Chapman'

Robin Hill Azalea

Rhododendron 'Robin Hill'

Robinson Crabapple

Malus 'Robinson'

Rob Roy

Capsicum annuum

Robustissima Windflower

Anemone × hybrida 'Robustissima'

Rocambole

Allium scorodoprasum

Rocambole Garlic

Allium sativum var. rocambole