Hardy Perennials - Thalictrum to Tulbaghia:

THALICTRUM (Ranunculaceae)
(MEADOW RUE.) These airy perennials are found in meadows, mountainous areas and by streams all over the world with the exception of Australasia. Most species are tall, reaching 3-4ft, but those from alpine areas are much smaller. The tall species have willowy stems which sway gracefully in the wind topped by heads of small delicate flowers. They are particularly useful for use in a wild or woodland garden. They prefer moist, humus-rich (leafy) soil in part shade
'Black Stockings' £ 3.75
A tall cultivar with tall nearly black stems topped by masses of fluffy lavender-coloured flowers in early summer 2 metres (6
delavayi agm £ 3.50
Native to the border regions of Tibet and China this graceful species has tall, purple-tinted stems topped by widely branched panicles of pale lilac flowers with prominent yellow stamens from July- September 1.2 metres (4 feet).
lucidum £ 3.50
Attractive species with ferny, pinnate foliage and dense panicles of scented, creamy yellow flowers in mid summer 1.5 metres (5 feet).
TIARELLA (Saxifragaceae)
(FOAMFLOWER.) Ideal plants for a woodland garden or any cool, shady situation. They are valued for their attractive palmate, sometimes deeply lobed foliage and panicles of small star-shaped flowers from spring to early summer. Most are good for ground cover but the cultivars tend to be slower growing than the species.
'Cygnet' £ 3.75
Long fingered green leaves with bronze veins and panicles of pink-tinged white flowers from April-July. 30 cms (1 foot).
'Skid's Variegated' £ 3.75
Much broader, palmate leaves than most Tiarellas. These are attractively mottled with white and pink, flushing orange in autumn. Pink flowers April-July. 30 cms (1 foot).
'Spring Symphony' £ 3.75
Pretty panicles of small star shaped white flowers emerging from pink buds from April-July over deeply lobed, dark green foliage. 20 cms (7").
TOLMIEA (Saxifragaceae)
menziesii 'Taffs Gold' £ 3.50
(PICK A BACK PLANT.) Member of the Saxifrage family with a similar leaf and growth habit to Heucheras but with hairy leaves which sometimes carry baby plants. Suitable for a woodland garden this plant requires well drained neutral to acidic soil in shade. Good ground cover. Often grown as a foliage plant indoors but perfectly hardy 60 cms (2 feet).
TRIFOLIUM (Papilionaceae)
(CLOVER.) These plants can be perennial, biennial or annual. They vary in habit from spreading (sometimes invasive) to much more well-behaved, clump-forming plants. Most are grown primarily for their attractive foliage but many have attractive flowers too. They prefer well drained but not too dry soil in full sun. The flowers attract Bees and the taller types with larger flower spikes can also attract Butterflies.
rubens £ 3.50
Clump forming, non invasive clover with large heads (to 1in long) of pink-red flowers in from June-Aug. 45 cms (1½ feet).
TRITONIA (Iridaceae)
Cormous members of the Iris family, closely related to the Crocosmia and originate from South Africa. They produce upright, sword-shaped leaves and attractive funnel-shaped flowers in summer. They are not fully hardy but will survive outside in a sheltered, well drained spot where temperatures rarely fall below minus 5°C. It is not a bad idea to apply a thick mulch in winter. Grow in full sun. When planting make sure the corm is about 4in deep.
distica ssp. rubrolucens £ 3.75
Lovely, funnel-shaped pink flowers to 1½ in across ifrom July-September. 1.2 metres (4 feet).
TROLLIUS (Ranunculaceae)
Trollius chinensis Golden Queen chinensis 'Golden Queen' agm £ 3.50
(GLOBEFLOWER.) Member of the Buttercup family with golden yellow flowers 6cm (2.5ins) across from May-July. For soil which does not dry out in sun/part shade. Suitable for the bog garden. 75 cms (2½ feet).
TULBAGHIA (Alliaceae)
(SWEET GARLIC.) Long flowering, rhizomatous plants with garlic-scented leaves and umbels of small, star-shaped flowers on the top of slender stems. They originate rom South Africa but are hardy in mild parts of the UK including here in Suffolk as long as you have good drainage. Apply a protective mulch in winter in frost prone areas or grow in a pot if you do not have the appropriate conditions. Many make good cut flowers in a small arrangement.
fragrans  
See Tulbaghia simmleri.
TULBAGHIA (Alliaceae)
alliacea £ 3.50
Semi-evergreen species so may need more protection in winter than other Tulbaghias. Umbels of scented, small greenish- white flowers from May-June. Minimum minus 5°C. 45 cms (1½ feet).
Tulbaghia cepacea v. maritima cepacea v. maritima £ 3.75
Variety with tightly packed umbels consisting of up to 7 small purple flowers in from early to late summer. 30 cms (1 foot).
Tulbaghia Fairy Star 'Fairy Star' £ 3.75
A lovely cultivar with long narrow leaves and umbels carrying up to 9 pale pink-lilac flowers on tall stems from May- September. 45 cms (1½ feet).
'John May's Special' £ 3.75
Lovely cultivar similar to Tulbaghia violacea but taller and the flowers are slightly larger, reaching 2cm (3/4in) across. Chalky mauve flowers are produced in large umbels from early to late summer. Very good cut flower for a small arrangement, lasting for a week or more in cool conditions. 45 cms (1½ feet).
Tulbaghia simmleri simmleri £ 3.50
Umbels of fragrant lilac-purple flowers to 2cm (3/4in) long from early to late summer. The leaves are broader than many other species of Tulbaghia. Minimum minus 5 °C. 60 cms (2 feet).
violacea £ 3.50
Species with loose umbels of chalky mauve flowers to 1/2in across from July to the first frosts. One of the more reliably hardy species providing good drainage is available. Good cut flower for a small arrangement, lasting for a week or more in cool conditions. 30 cms (1 foot).
Tulbaghia violacea 'Silver Lace' violacea 'Silver Lace' £ 3.75
Cultivar with attractive green leaves with a white margin and loose umbels of chalky mauve flowers to 1/2in across from July to the first frosts. One of the more reliably hardy types providing good drainage is available. Good cut flower for a small arrangement, lasting for a week or more in cool conditions. 30 cms (1 foot).