Echinopsis chamaecereus f. lutea
Yellow peanut cactus

A cactus curiosity, this is grown for its banana-like stems because its red flowers rarely appear. It has no chlorophyll so must be grafted on to a green cactus that can supply it with food. The slender elongated stem slowly forms a small clump. Grown only as a pot plant, it needs some care; shade its tender body from summer sun to avoid scorch marks. The grafting stock determines the minimum temperature.

H 13 cm (5 in), S 25 cm (10 in). Av. min.10°C (50°F).

Echinopsis mamillosa f. kermesina

When only 8 cm (3 in) diameter, this small cactus produces flowers that open on summer nights and last for about 24 hours. Protect the plant from cold to avoid unsightly scarring and grow it in full sun.

H 30 cm (12 in), S 23 cm (9 in). Min. 7°C (45°F).

Echinopsis densispina

Often labelled with its old name of Labivia famatimensis, this cactus flowers when 2.5-5 cm (1-2 in) tall. In spring or summer, it bears a profusion of fairly large, funnel-shaped flowers with the dasiy-like petals that are typical of Labivia; they range from white; yellow and orange to pink, purple or red. The pale spines are bristly. This species prefers light shade or, when in bloom, sun.

H and S 60 cm (2 ft). Min 5°C (41°F).

Echinopsis oxygona

Widely grown for a century because it is robust and easily propagated, this cactus is a fine flowering plant. The long-necked blooms, some scented, are white to lavender in hue and about 13 cm (5 in) across. They appear intermittently in spring and summer, and open at night for up to 24 hours. The globular body is usually dark  green  and the spines range  from black to white in colour.

H 30 cm (12 in), S 1.2 m (4 ft). Min 5° (41°F).

Echinopsis chamaecereus

This small slender plant has very short white spines, and branches rapidly to form a cluster of creeping candle-like stems. It flowers prolifically, producing funnel-shaped blooms, which open fully only in sun, all along the stem in late spring or early summer. The small berries are spiny. This cactus tolerates neglect and prefers slight shade; it is easily grown from offsets.

H 15cm (6 in), S unlimited. Min. 0°C (32°F).

Espostoa lanata

Peruvian old-man cactus, snowball cactus
This is impressive cactus forms a taller and more slender stem than others species in its genus. Fairly broad, tubular, white flowers with a rather unpleasant scent may open once the plant is 90 cm (3 ft) tall. These are followed by cherry-like, red berries.
H 3.7 m (12 ft), S 90 cm (3 ft). Min. 5°C (41°F).

Espostoa melanostele

Often shorter and thicker-steammed than many Espostoa species, this variable plant branches at its base in time. A mature stem may be totally concealed by very long woolly spines. Pale flowers and yellow to red berries appear after 15 years. Do not overwater.
H 2.1 m (7 ft), S 90 cm (3 ft). Min. 5°C (41°F).

Ferocactus latispinus

Is a small, flattened, exceptionally short columnar ferocactus with conspicuous, strong and colourful spines. The central spines are particulary well developed, being flattened and hooked. F. latispinus reaches flowering size at 10 cm, and since the flowers open late in auntumn (buds appear in late September and October), they occur in cultivation only if the end of the year is sunny,then they will last till Christmas. They have an intense purple-red to brown colouration and open in succession.

Ferocactus wislizeni

Distinctively patterned with white and red of rust-coloured spines, this large cactus bears lemon, orange or red blooms when 30 cm (12 in) in diameter. The plant is tolerant of neflect and eventually becomes columnar in shape.

H 3 m (10 ft), S 90 cm (3 ft). Min.5°C (41°F).