Silene dioica 'Inane' has attractive burgundy-flushed foliage and bright magenta-pink, pinwheel-like flowers from early summer to fall.

Sinningia is a genus related to Gloxinia and African violets. 'Invasion Force' has pink, fragrant, tubular flowers atop felted foliage.

Mighty Mato grafted tomatoes produce 2-3 times (or more!) fruit than ungrafted plants and are more cold tolerant and disease resistant.

Mighty Mato grafted tomatoes produce 2-3 times (or more!) fruit than ungrafted plants and are more cold tolerant and disease resistant.

Mighty Mato grafted tomatoes produce 2-3 times (or more!) fruit than ungrafted plants and are more cold tolerant and disease resistant.

Solanum tuberosum 'Amarosa' is a versatile gourmet red-skinned fingerling potato with red and pink marbled flesh.

Solanum tuberosum 'Banana' is a versatile gourmet fingerling potato with yellow flesh.

Solanum tuberosum 'Bellanita' is a versatile gourmet fingerling potato with excellent tasting yellow flesh and high yield.

Solanum tuberosum 'Chieftain' is an oval to oblong tuber with red skin and white flesh that matures mid-season.

Solanum tuberosum 'Innovator' is has yellow skin and flesh that are ideal for frying.

Solanum tuberosum 'Purple Viking' is a delicious edible potato with lavender blooms, smooth purple skin, and white flesh.

Solanum tuberosum 'Red Pontiac' is a delicious edible potato with light purple blooms, thin red skin, shallow eyes, and sweet white flest.

Solanum tuberosum 'Violet Queen' is a versatile gourmet potato with purple skin and purple flesh.

Solidago shortii 'Solar Cascade' is a nativar of the endangered Short's goldenrod with cascading branches of long-blooming yellow flowers.

Sorghastrum nutans 'Golden Sunset' is a tall and vertical clumping yellow prairie grass with golden flower spikes.

Spirea betulifolia 'Glow Girl' is a cold-hardy, multi-stemmed shrub with white flowers and golden-green foliage.

Spirea japonica 'Double Play Gold' is a cold-hardy, multi-stemmed shrub with pink flowers and golden-green foliage.

Stapelia gigantea is a crazy succulent with amazing flowers that look like huge fuzzy starfish up to 12 inches or more across!

Stephania erecta (syn. S. pierrei) is a cool novelty houseplant that grows as a small vine from a rounded caudex.

Stephania venosa (syn. S. rotundifolia) is a caudiciform houseplant producing vines of heart-shaped leaves.

Stephania venosa (syn. S. rotundifolia) is a caudiciform houseplant producing vines of heart-shaped leaves.

Stephania venosa (syn. S. rotundifolia) is a caudiciform houseplant producing vines of heart-shaped leaves.

Stephania venosa (syn. S. rotundifolia) is a caudiciform houseplant producing vines of heart-shaped leaves.

Strelitzia reginae, the bird-of-paradise, is one of the most famous and distinctive of the tropical flowers resembling an orange and blue crane.

Streptocarpus 'Harlequin Blue' is a Cape primrose and relative of the African violet with bi-coloured flowers of lavender-blue and yellow.