Syringa meyeri Flowerfesta White is a reblooming, dwarf lilac producing larger-than-average white, very fragrant, dense panicles.

Syringa meyeri 'Pearl Potion' is a cold-hardy, compact lilac with pink buds and pure white fragrant flowers.

Syringa vulgaris 'Congo' has warm purple buds opening to lavender flowers.

Syringa vulgaris 'Edward J. Gardner' has unusual pink flowers.

Syringa vulgaris 'Krasavitsa Moskvy' has lavender-pink buds opening to pure white flowers.

Syringa vulgaris 'Mme Lemoine' is the classic white lilac with icy white blooms.

Syringa vulgaris New Age Lavender grows to just 5 feet with pink buds opening to fragrant lavender flowers.

Syringa vulgaris New Age White grows to just 5 feet high with cream buds opening to white fragrant flowers.

Syringa vulgaris 'Primose' has creamy white almost yellowish blooms.

Syringa vulgaris 'Sensation' has warm purple flowers with white edges.

Syringa Bloomerang Dark Purple is a reblooming lilac producing large, deep-purple, very fragrant, dense panicles.

Syringa Bloomerang 'Dwarf Pink' is a dwarf, reblooming lilac with large, densely packed panicles of fragrant, rich pink tubular flowers.

Syringa Bloomerang 'Dwarf Purple' is a dwarf, reblooming lilac with large, densely packed panicles of fragrant, purple, tubular flowers.

Syringa 'Josee' is a reblooming, dwarf lilac producing sweetly-scented pink flowers

Tanacetum Radiant Deep Pink has glowing magenta flowers with bright yellow centres on compact, upright plants.

Tanacetum Radiant Light Pink has glowing light pink flowers with bright yellow centres on compact, upright plants.

Tanacetum densum var. amani forms evergreen, textured mats of soft, feathery, silver foliage and bright yellow button-like flowers.

Thalictrum 'Black Stockings' is a Meadow Rue with large, flat topped fluffy clusters of lavender flowers on top of tall dark stems.

Thermopsis chinensis 'Sophia' is a lupin relative with canary yellow flowers blooming at the same time as tulips and daffodils.

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.

Triteleia 'Queen Fabiola' offers umbels of up to 25 funnel, star-shaped blue/mauve flowers on wiry stems.

Triteleia 'Rudy' offers umbels of up to 25 funnel-shaped, white flowers with a glowing purple stripe down the middle of each tepal.

Trollius 'Alabaster' has semi double, spherical, soft butter yellow flowers. Globe flowers are very hardy and easy to grow.