Trillium albidum is rare in cultivation and so elegant in the shade garden with sessile white petals and mottled foliage.

Trillium apetalon is a very rare oddball Japanese species in which the petals are missing and the sepals are red to burgundy.

Trillium grandiflorum 'Flore Pleno'/'Plenum' is a rare and exquisite double form of the snow trillium with white rose-like flowers. Spectacular.

Trillium grandiflorum 'Snowbunting' is a rare and exquisite double form of the snow trillium with creamy white flowers. Spectacular.

Trilium kamtschaticum is a sister species from Asia to North America's western and snow trilliums. Beautiful.

Trillium pusillum is a dwarf woodland treasure with green to red-tinged sepals and white petals that age to pink.

Tropaeolum brachyceras is a climbing nasturtium with small leaves and thin tubular bright yellow flowers.

Climbing nasturtium, Tropaeolum speciosum, is a choice climbing vine with dainty stems and delicate, clover-like leaves that erupts into masses of bright red flowers in summer.

Tropaeolum tricolor is a climbing nasturtium with numerous funnel-shaped red, yellow, green, and purple flowers.

Tropaeolum tuberosum is a climbing nasturtium with small leaves and thin tubular orange flowers.

Tropaeolum tuberosum 'Ken Aslet' is an amazing climbing nasturtium with glaucous small leaves and thin tubular orange flowers.

Tulipa greigii 'Fire of Love' has stunning blue-green foliage edged in creamy yellow and striped with red cupping large, bright red flowers.

Tulipa 'Calypso' has fiery orange-red flowers with yellow edges all above attractive blue-green foliage.

Tulipa 'Easter Surprise' has bold, lemon-yellow flowers with red, orange or peach highlights sitting just above the blue-green foliage.

Tulipa 'Mary Ann' is a gorgeous tulip in shades of white, pink, and raspberry red with yellow bases all above the blue-green foliage.

Tulipa 'Oratorio' has flowers that can appear reddish, salmony-pink, or salmony-orange depending on the light.

Tulipa 'Oriental Beauty' has beautiful red flowers above attractive blue-green foliage with burgundy-red markings.

Tulipa greigii 'Plaisir' has bold, coral-red flowers with white highlights sitting just above stunning blue-green foliage striped with burgundy and red.

Tulipa 'Absalon' introduced in 1780 is richly coloured with feathers, flames or marbles of burgundy-brown and yellow.

Tulipa 'Black and White' is a broken/Rembrandt tulip with white flowers feathered with purple-black, dark purple, and warm purple.

Tulipa 'Bleu Aimable' is a unique historical tulip with lavender-blue flowers with subtle shadings of magenta and true blue.

Tulipa 'Columbine' introduced in 1929 is richly coloured with feathers, flames or marbles of purple on lavender with white.

Tulipa 'Dom Pedro' is a unique historical tulip with deep burgundy flowers with subtle shadings of yellow.

Tulipa 'George Grappe' is a historic Breeder tulip with stunning lavender blue colour flowers with sky blue bases.

Tulipa 'Insulinde' introduced before 1915 transforms in colour and form from yellow and rose to purple-burgundy and white.