Tricyrtis 'Omokage' is a toad lily with purple-tipped white flowers with delicate purple spots.

White flowers with delicate purple spots and intricate centres.

Tricyrtis 'Taipei Silk' is a gorgeous hybrid with glossy dark green leaves and spectacular multi-coloured flowers.

Trifolium repens Dark Dancer is a darling little groundcover offering vigorous carpets of little shamrocks that are rich burgundy with a green edge.

Trifolium 4 Luck 'Coco Mint' is a darling little groundcover offering vigorous carpets of little shamrocks that are rich burgundy with mint green centres.

Trifolium 4 Luck 'Dark Eye' is a cool ground cover offering vigorous carpets of little shamrocks that are mint green with burgundy centres.

Trifolium 4 Luck 'Green Glow' is a darling little groundcover offering vigorous carpets of little shamrocks that are emerald green with mint green tips.

Trifolium 4 Luck 'Red Green' is a darling little groundcover offering vigorous carpets of little shamrocks that are grey-green, burgundy red and emerald green.

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

The nodding wakerobin (Trillium flexipes) has pure white flowers that can be upright or hang down below the leaves.

Trillium grandiflorum is a large-flowered species with petals up to two inches long. It is the floral emblem of Ontario.

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.

Tulipa biflora has pure white, pointed petals and a greenish yellow centre with 2-5 flowers per stem.

Tulipa clusiana var. stellata is a botanical tulip with pointed petals in deep pink and white.

Tulipa humilis 'Alba Coerulea Oculata' is a rare and beautiful selection with pure white flowers with stelly navy blue centres.

Tulipa 'The First' is a kaufmanniana hybrid with lovely tricolor flowers in shades of white, red and yellow atop bluish foliage.

Tulipa polychroma has pure white flowers with yellow centres and multiple flowers per stem.

Tulipa turkestanica has pure white, pointed petals sometimes with a pink edge and a yellow to orange-yellow centre with 1-12 flowers per stem.

Tulipa 'White Liberstar' is a beautiful cultivar with ruffled pure white flowers.

Tulipa 'Danceline' is a unique double late peony type tulip with fully double, white, ruffled flowers with flecks of dark pink.