Calceolaria- Slipper Flower

Annual and perennial plants, nearly always used as bedding plants; ie for one season only.

Situation:

In flower-beds and window-boxes, in full sun or light shade.

Soil:

Lime-free, nutritious garden soil.

Propagation:

Sow in early spring in trays with some bottom heat, or in mid spring in situ. Growers sow hybrids in late autumn.

Calceolaria integrifolia syn Calceolaria X fruticohybrida or C. rugosa: In theory these can be brought through the winter, but frost is not tolerated. There are a number of cultivars, for instance ‘Gold Bouquet’, and Fi hybrid. The leaves of these hybrids are oval shaped, and the yellow flowers grow in fairly small clusters. This is the best known type, obtainable as bedding plants. Calceolaria tripartita syn Calceolaria scabiosifolia: Height 40-70 cm; yellow flowers in early summer to early autumn. An annual. spread some well-rotted cow manure round the plants in autumn. Chalky soil is tolerated.

Propagation:

Garden varieties can only be grown from cuttings taken in summer; the species can also be raised from seed.

Buddleia alternifolia: Height to 3 m; violet flowers in drooping bundles as early as the beginning of summer. This species must not be pruned in spring; moderately winter-hardy.

Buddleia davidii: Height to 3 m; flowers in mid to late summer, the terminal, often somewhat drooping plumes, being up to 30 cm long. Fine garden varieites are: ‘Black Knight’, very deep purple; ‘Border Beauty’, deep purple, very compact habit; ‘Empire Blue’, the bluest form; ‘Royal Red’, purple red; and ‘White Profusion’, white. There is also a variety called nanhoensis, which is fairly low-growing with smaller, pale-purple„flower plumes. All cultivars of Buddleia davidii may be pruned drastically in spring, for they flower on the new wood.

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