Part 44

Tiarella.--These hardy herbaceous plants are very suitable for rock-work or the front of a border. They are not particular as to soil; they flower in April, and may be propagated by seed or division. Height, 9 in. to 1 ft.

Tiarella Cordifolia (Foam Flower).--A hardy herbaceous perennial, having fine foliage. It will grow in any good soil, but likes shade and moisture. It may be increased by dividing the roots at the end of the summer. The blooms are produced during May and June. Height, 1 ft.

Tigridia (Ferraria; Mexican Tiger Flower, popularly called the Tiger Iris).--A gorgeous flower of exceptional beauty. Plant the bulbs in the sunniest spot out of doors during March, April, or May, in a sandy loam enriched with a liberal amount of leaf-mould, placing them 3 in. deep and 6 in. apart, and putting a little silver sand round each bulb before covering it with the soil. Shelter from cutting winds. The blossoms appear in July or August. Each bloom lasts only one day, but is succeeded on the next by fresh ones, so that a continuance of bloom is maintained. Protect them in winter with a covering of dead leaves, or, better still, take them up when they have done flowering, and keep them dry and free from frost. For pot-culture plant the bulbs in sandy loam and peat, plunge them in a cold frame, and withhold water until the foliage appears. They may be increased by off-sets or seeds. Height, 1 ft.

Tobacco Plants.--See "Nicotiana."

Tobacco-Water.--Boil 2 oz. of shag, or other strong tobacco, in a pint of water. Apply with a soft brush. This is a deadly poison to insects.

Tomatoes (Love Apples).--Those intended to be grown in the open should be raised from seed sown the first week in March in pots of very rich, light mould. Place them in a cucumber-house or other gentle heat, and when the second leaf appears, pot them off singly, keeping them near the glass and well watered. Towards the end of May remove them to a cold frame to harden off, and plant out as soon as fear of frost is over, in deeply-dug and moderately manured ground, against a south wall fully exposed to the sun. Train to a single stem and remove all lateral growths. When the plants are 3 or 4 ft. high pinch off the tops to prevent further growth and throw strength into the fruit. Watering should cease as soon as the blossom-buds appear, except in periods of very severe drought. When grown under glass Tomatoes need to be trained in much the same way as Grape Vines. Constant attention must be given to removing all useless shoots and exposing the fruit to air and light. An average temperature of 60 degrees should be maintained, with a rather dry and buoyant atmosphere.

Toothwort.--See "Dentaria."

Torch Lily.--See "Tritoma."

Torenia.--These stove and greenhouse plants require a rich soil. They may be increased by seed or division. They flower during June and July. Height, 6 in. to 9 in.

Tournefort.--See "Crambe Cordifolia."

Tradescantia Virginica (Spider Wort).--A hardy herbaceous plant. In a light, rich soil it will flower in July. Height, 1 ft. There are other varieties of Tradescantia; they all make good border plants, thrive in any situation, and are continuous bloomers.

Transplanting.--Plants may be transplanted as soon as they are large enough to handle. They must be lifted carefully with a small trowel, or if they are very small, such as Golden Feather, with a still smaller blunt article, disturbing the roots as little as possible. It should be done when the ground is wet, and preferably in the evening. In dry weather they should be well watered twelve hours before they are disturbed. Shade them from sun for one or two days. Cabbages, Lettuces, Cauliflowers, Broccoli, Kale, and other members of the Brassica family must be transplanted, or they will be a failure. Root crops such as Carrots, Parsnips, Turnips, etc., must not be transplanted, but thinned out. Celery may be transplanted in June or July.

Traveller's Joy (Clematis Viorna).--This hardy climbing plant grows best in a light soil, flowers in August, and is increased by layers of the young shoots in summer. Height, 12 ft.

Trees, Plants that Flourish under.--Ivy, St. John's Wort (Hypericum Calycinum), early-flowering White Aconite.

Tricyrtis.--These greenhouse herbaceous plants bloom in May. A rich, light soil suits them. Height, 6 in.

Trientalis Europæa (Star Flower).--To grow this native perennial to advantage, it should be planted in leaf-mould with which a large proportion of sand has been mixed. Confine the roots to a narrow compass by means of slates placed just beneath the surface of the soil. Let the ground be kept moist, but well drained. The bloom is produced during May and June, and it is propagated by runners. Height, 6 in. to 8 in.

Trifolium Repens Pentaphyllum.--A showy, hardy, deciduous perennial. It thrives in ordinary soil, puts forth its white flowers in June, and is propagated by seed or division. Height, 6 in.

Trillium Erectum (Wood Lily).--This tuberous perennial is quite hardy, and flourishes in partial shade. The soil must be light and rich, yet moist. The plant does not increase very fast, but the roots of good-sized plants may be divided. It flowers in May and June. Height, 6 in.

Tritelia.--A charming spring-flowering plant, bearing pretty white star-like flowers on slender stalks. It is used largely for edgings. It looks well in clumps on the front of borders. Plant in autumn, and divide the bulbs every two or three years. Height, 6 in.

Tritoma (Red-hot Poker, or Torch Lily).--Requires a rich, sandy soil, and to be protected in a frame from wet and frost in the winter. Increase by division or by suckers from the root. The flower spikes grow 18 to 27 in. long. The crown of the plant should not be more than 11/2 in. in the soil, which should be dug deeply and mixed with rotted manure. In winter, if it is left in the ground, surround the plant with 2 in. of sawdust, well trodden. Remove this in May, and water liberally with liquid manure till it blooms. The best time to plant is March or October. By many it is considered advisable not to disturb the plant too often.

Tritonias.--These somewhat resemble miniature Gladioli, and are among the most useful bulbs for pot-culture. Plant from September to December, placing five or six bulbs in a 5-in. pot, and using a compost of loam, leaf-mould, and silver sand. Plunge the pots in ashes in a cold pit or frame, and keep them dry until the plants appear. When in full growth they may be removed to the conservatory, placing them near the glass, and giving careful attention to watering. For outdoor cultivation choose a sunny, sheltered position, with a light, rich, sandy soil. Give protection in frosty weather by covering with dry litter.

Trollius Altaiense (Globe Flower).--A pretty, hardy herbaceous plant, with very handsome foliage. It likes a light but moist soil, may be increased by seed or by dividing the root, and flowers in May. Height, 9 in. to 2 ft.

Trollius Asiaticus.--A very pretty herbaceous plant, suitable for the border. It may be raised from seed sown in the autumn, and grown on in light, moist soil. The plant is hardy and flowers in May. Height, 1 ft.

Tropæolums--

JARRATTI (scarlet, orange, and black) are remarkable for a slender and graceful growth. Well adapted for covering wire globes, trellises, etc.

LOBBIANUM (various colours).--Elegant dwarf climbers, suitable either for the conservatory or for outdoor culture. They may also be used for bedding if planted thinly and kept pegged down; or may be grown in window-boxes. Height, 6 ft.

PENTAPHYLLUM (red) is slender and graceful, and an elegant climber.

POLYPHYLLUM (yellow) succeeds best against a south wall. It is hardy, has rich abundant glaucous foliage, and is a particularly fine climber.