Bulbocodium Trigynum (Colchicum Caucasium).—­A miniature hardy bulbous plant, which produces in February and March erect flowers about the size of snowdrops.  Set the bulbs in sandy loam or leaf-mould, choosing a sunny situation.  The bulbs may be divided every other year.  Height, 2 in.

Bulbocodium Vernum (Spring Saffron).—­This bulb produces early in spring, and preceding the foliage, a mass of rose-purple flowers close to the ground.  It is perfectly hardy, and valuable for edgings or rock-work.  Plant in autumn in light vegetable mould, and in a sheltered, well-drained position.  It will not grow in stiff, clay soil.  The bulbs may be divided every two years, after the tops have died down.  This dwarf plant flowers from January to March.  Height, 6 in.

Buphthalmum Salicifolium (Deep Golden-yellow Marguerite).—­Showy and ornamental hardy perennials.  They will grow in any good soil, and flower from May to September; may be increased by suckers.  Height, 1-1/2 ft.

Burning Bush.—­See “Dictamnus” and “Fraxinella.”

Buxus (Tree Box).—­A useful evergreen shrub which may be grown in any soil or situation.  The B. Japonica Aurea is one of the best golden plants known for edgings to a walk.  The closer it is clipped the brighter it becomes.  Increased by suckers or layers.

C

Cabbage.—­Sow from February to April for an autumn supply, and in July and August for spring cutting.  As soon as the plants have made four or five leaves, transplant into soil that has been liberally manured and trenched, or dug deeply, placing them 18 in. or 2 ft. apart, according to the kind grown.  Keep the soil well broken up, and give a liberal supply of liquid manure while they are in a growing state.  An open and sunny situation is necessary.  Among the best varieties for spring sowing are Heartwell, Early Marrow, Little Pixie, Nonpareil, Sugarloaf, and Early Dwarf York.  For autumn sowing, Ellam’s Dwarf Early Spring, Defiance, and Enfield Market may be recommended.

Coleworts may be sown in June, July, and August for succession, placing them about a foot apart, and cutting before they heart.

Chou de Burghley is of great value for spring sowing, and will be found very useful during autumn and early in winter.  This vegetable is sometimes called Cabbage Broccoli, on account of the miniature Broccoli which are formed among its inner leaves towards autumn.

Couve Tronchuda, known also as Braganza Marrow and Portugal Cabbage, should be sown in March, April, and May for succession.

Savoy Cabbage is sown in March or April, and given the same treatment as other Cabbage.  Its flavour is much improved if the plants are mellowed by frost before being cut for use.

Red Dutch is used almost solely for pickling.  Its cultivation is precisely the same as the white varieties.