Sisyrinchium - Tropaeolum

Sisyrinchium palmifolium £4.50
The combination of bright yellow flowers and large, bold fans of leaves is unusual in a Sisyrinchium. Height to 50cm, not invasive.
Smilacina see Maianthemum (at least for now… I don't think the fat taxonomist has sung yet)
Speirantha convallarioides £4
Dark green leaves and fragrant flowers, white as white, in late spring. Less spready than Lily of the Valley, but similar in scale, and quite closely related. For humusy shade.
Spigelia marilandica £6
Upright 30cm stems with a succession of brilliant red-and green (classic hummingbird pollinated) flowers in summer. Dies down completely in winter. Prefers a fairly open well drained position. Typically found in woodland margins and so on, but Graham Birkin tells me he once saw a fine clump in very wet ground in a Pennsylvania spring - probably not something to emulate in the garden unless you have a few spares.
Stachys balcanica £4
Very hairy grey-green leaves; white flowers with a hint of pink. 30cm tall. Sun, good drainage.
Stachys ossetica £4.50
Large, pale creamy yellow flowers; dark green textured leaves. 30cm. Very different, very beautiful. Sun and good drainage.
Stachys thunbergii £4
A useful and highly attractive plant - the name seems to have settled now (previously listed tentatively as ciliata). Low and spreading without rooting, rather in the manner of Diascia rigescens, it has dark green, shiny leaves and deep maroon flowers over a long season from early summer to autumn.
Sternbergia lutea Angustifolia Group £4
Narrow leaved form of this easy bulb which brings sunshine to the September rock garden.
Stipa gigantea 'Gold Fontaene' £5
Ordinary S. gigantea is a grand grass, with its airy, oaty flower heads lasting well into winter. This is just the same, but even taller and with slightly broader inflorescences. Has reached 2.5m with us. Sun and... space.
Stipa sp. F&M 248 £4
One of the fine airy ones, interesting for the broad flag leaves contrasting with the fine basal ones. Height 1m+ and hardy here. Collected near Mexico City, I'm told, by the legendary Fernandez and Mendoza.
Symphytum 'Rubrum' £4
Most symphytums are either monolithic, dangerously invasive, or cringeing weeds. This noble exception forms a neat little clump, around 30cm in height, with nodding, wine red flowers in early summer. A sweetie.
Syneilesis aconitifolia £4.50
White-furry umbrellas pop out of the ground in spring and open up. Runs pleasantly in a shady place, even quite dry. The flowers are utterly unremarkable, but that's not why you grow it. It's the Syneilesis which wants to grow!
Thalictrum actaeifolium var. brevistylum BSWJ8819 £4.50
A pink flowered job which is said to reach 1.5m (not for us). It's the shape of the leaflets which give a distinct and very attractive look.
Thalictrum aquilegifolium 'Thundercloud' AGM £4
Quite tall, early to mid-summer flowering, with flowers of a nice dusky purple.
Thalictrum cultratum £4
One of those minus types which you grow for the lovely, stiff, very finely divided foliage which is held with great poise. The flowers are a pleasant brown. 50cm.
Thalictrum 'Elin' £5
A spectacularly tall, and self-supporting Swedish hybrid which gets its purple tinted stems and violet flowers from rochebrunianum, and its glaucous leaves and height (3m+) from flavum var. glaucum. By division, from stock we've had for many years, from before it was tissue cultured, if such things matter to you.
Thalictrum flavum var. glaucum short form £4.50
Thanks to Jane Henry of the late lamented Churchills Garden Nursery at Chudleigh for this interesting plant. Glaucous and yellow flowered but under 1m in height. These are divisions of seedlings of her original find, which came true.
Thalictrum omeiense ex DJHC 762 £4
Clouds of little white flowers in spring over unusually brown-tinted (Sarah says chocolate) foliage. 30cm. From wet limestone cliffs, but suits woodsy conditions. I do not understand why this is so rarely grown.
Thalictrum tuberosum £3.75
Cream flowers up to an inch across on 30cm stems, with glaucous basal leaves. Ideal for a hot sunny position in raised bed, sink or scree. This comes from an old Archibald collection, but I'm not certain that it's the genes which give big flowers, so much as growing conditions. Too many people think it's a woodlander.
Thalictrum uchiyamae £4.50
For us, a splendid tall (1.8m) upright thing with good sized lilac flowers and pretty green leaves with rounded leaflets.

Tricyrtis
The Toad Lilies are autumn flowering plants for moist soil in some shade.
Tricyrtis  formosana 'Dark Beauty' £4.50
About as dark and as blue as they get.
Tricyrtis  hirta £4.50
Our form, which goes back to Washfield again, is notably pale, so the spots stand out particularly well.
Tricyrtis  macropoda 'Tricolor' £4
A rather small, strikingly variegated variety with pale green / cream leaves flushed pink in spring. It needs a cool shady position to avoid unpleasant scorching. The flowers, if you get them, are insignificant and yellowish, but it's the leaves you want. Grown much more in the USA than over here.

Trifolium repens 'Dragon's Blood' £4.50
Well yes, it's a white clover, but: the leaflets are silvery, with a shrply defined dark green base, plus a maroon ink-devil stain on each. So beautiful, and rightly popular. Great as a dense sprawly patch or hanging over the edges of a container - great in a tall chimney pot. Flowers white and perfectly harmless.
Trillium kurabayashii £5
Upfacing dried-blood red flowers and dark-marked leaves. Woodsy conditions. Propagated ourselves, not pitiable dried up wild-dug ones.

Tritonia
Relatives of Crocosmia from South Africa, well proven as garden plants. A burgeoning collection here…

Tritonia crocata group £4
Lots of tubby flowers crowded on 30cm stems in late spring. Winter green. For a sunny, well drained spot. Bulks up quickly to make a striking clump. Good in a pot, potted on or split annually at the end of summer, and put in the greenhouse during cold snaps. T. deusta and T. squalida may be involved here too. I'd like to call this group by its South African name, the Mossel Bay kalkoentjies, but I can't pronounce it.
Tritonia crocata 'Pink Sensation' £4
Clear pink, probably a form of squalida.
Tritonia crocata 'Princess Beatrix' £4
Intense orange with dark basal blotches.
Tritonia crocata 'Prince of Orange' £4
Vivid orange. (Handwritten nursery labels say POO.)
Tritonia crocata 'Serendipity' £4
A delicate light orange.
Tritonia crocata 'Tangerine' £4
Ditto, but the first to flower.
Tritonia crocata 'Plymouth Pastel' £4
Very delicately blended pastel shades of orangey yellowy pink.

Tritonia deusta £4
Vivid orange. Somebody pointed out to me that the dark blotches are little browny purple hearts. Ahhh.
Tritonia disticha ssp. rubrolucens tall pink form £5
Classic tall species, 1m high in flower. Like a delicate Crocosmia, carrying lovely clear pink flowers on wiry, branched stems in late summer. Easy in good soil in sun. Winter dormant. The form we've offered for years, originally from South African seed.
Tritonia disticha ssp. rubrolucens shorter redder form £4
More like 60cm tall at the end of flowering, a little earlier, and a redder pink - perhaps carmine describes it best. The Cornish consider this the usual form.
Tritonia lineata winter growing form £4
This 30cm species is variable, and while it mainly lives in the Eastern Cape, does extend into the winter rainfall area. Rather a tall plant with cream flowers, veined brown outside. May flowering, before dying down.
Tritonia lineata summer growing form £4
As above, but biscuit flowers in late summer, 20cm high, winter dormant. Previously listed as simply lineata.
Tritonia laxifolia £3.50
Orange, outfacing flowers on a 25cm plant in May. A winter grower for us, despite being the E. Cape counterpart to the next species.
Tritonia securigera £3.75
Orangey brown flowers in May. Prolific winter grower. The name means 'wielding an axe' - look VERY closely inside the flower with a x10 hand lens to see why. T. laxifolia, in contrast wields an ice-pick.

Trollius x cultorum 'Superbus' AGM £4
Clear lemon yellow globe flowers whose petals never open flat but stay curled over the flower: in effect a more robust T. europaeus. Common as anything, but who cares, its so beautiful.
Trollius stenopetalus £4.50
Big, bold, upward facing abut fully open buttercup yellow flowers. 60cm.
Tropaeolum hookerianum ssp. austropurpureum £4.50
Think of a slightly smaller, purple flowered version of polyphyllum, with a slight purple tint to the glaucous foliage. A special and very uncommon plant for a very well drained, sunny place, perhaps a raised bed. Few. Thanks to the wild Wileys of Wildside whose energy almost equals their insane horticultural ambition - you really should visit!