Scadoxus pole-evansii (syn. Haemanthus) is a stunning species that can reach four feet high with umbels of salmon orange.

Scadoxus puniceus (syn. Haemanthus) has beautiful clusters of golden anthers held on red filaments with burgundy bracts.

Schefflera delavayi is a lush and tropical but totally hardy shrub or small tree at the cutting edge of woody horticulture.

Sciadopitys verticillata, the Japanese umbrella pine, is an ancient conifer with long, thick needles held like the spokes of an umbrella.

Sedeveria 'Letizia' forms colonies of upright, trunked, bright green rosettes that can develop bright red tints with stress.

Sedeveria 'Markus' has forms apple green rosettes of attractive, pointed leaves.

Sedeveria 'Pink Ruby' is a colony-forming succulent with small, green, pointed, red-tipped leaves that flush with orange-red.

Sedum ellacombianum 'Cutting Edge' is a mounding sedum with scalloped, spatula-shaped leaves with gold margins.

Sedum floriferum ‘Winter Mahogany’ is a creeping stonecrop with yellow flowers and green foliage that changes to burgundy red for autumn and winter.

Yellow blooms turn crimson on Sedum kamtschaticum 'Variegatum', making a pretty contrast to the cream-edged foliage.

Sedum nussbaumerianum 'Coppertone' has trailing stems in shades of amber and glowing orange.

Sedum ochroleucum 'Red Wiggle' is an outstanding stonecrop forming multi-colour carpets of cherry red, orange-red, and green.

Sedum pachyphyllum 'Rose' forms cute, short-trunked colonies with cylindrical, powder blue leaves like elongated jelly beans.

Sedum palmeri has great evergreen rosettes of broad, rounded, blue-green foliage and very pretty clusters of yellow flowers in mid- to late summer.

Sedum perezdelarosae has blue, keel-shaped leaves in tight rosettes in branching colonies.