274 PLANT CULTURE 



In Washington they thrive splendidly when planted on rock- 

 work. The odor of the flowers is that of the Violet. 



Propagation. They are propagated from self sown seeds 

 and from offsets. 



TIGRIDIA (Tiger Flower). The common species, T. pavonia, 

 and the many varieties of this beautiful plant outclass all members 

 of the Iris family for brilliancy of colors. 



Culture. The care necessary to get them to bloom in Sxmimer 

 is much like that for Gladiolus. The corms should be kept dormant 

 until warm weather arrives by placing them in pots of dry sand. 

 They are planted in late Spring. The corms should be lifted before 

 freezing in the Autumn. 



Propagation. The corms multiply by natural division. 



TRICYRTIS (Japanese Toad-Lily). T. hirta is a curious 

 but beautiful plant. It is the latest of the hardy herbaceous plants 

 to come in flower. It usually blooms in October and November. 

 During Summer the foliage is quite ornamental. The individual 

 flowers, of which there are many on a stalk, are shaped like those of 

 a Lily, only much smaller. The flowers are pinkish white, spotted 

 with purple. This subject should be planted in moist soil, or where 

 a mulch can be given, in order to preserve the foliage till the bloom- 

 ing period. 



Propagation. The plant divides easily, or cuttings may be 

 made from the flowering stems and put in a coldframe late in the 

 season. 



TRILLIUM (Wake Robin). About a dozen species of these 

 beautiful and interesting native plants are in cultivation. T. 

 grandiflorum is the one most commonly grown, owing to its very 

 large white flowers. Its culture is of the simplest description, re- 

 quiring a half-shaded position with abundance of vegetable humus 

 in the soil. It is sometimes grown in pots for early forcing, for 

 which purpose it is well adapted. The rhizomes should be potted 

 as soon as the plants are at rest, late in Summer, and plunged in a 

 cool frame until wanted. With very little heat they wiU flower 

 several weeks in advance of their usual time. 



TRITONIA (Blazing Star). T. Pottsii, which usually goes 

 under the generic name Montbretia, is a plant of the Iris family with 

 orange colored flowers. It survives zero temperatures in Washing- 

 ton with no snow on the ground. There are many other species. 

 This plant with many others could be gotten up in quantity for 



