Tag Archives: cactus

Conophytum obcordellum


Conophytum are dwarf succulent perennials forming clumps of “bodies” comprising a pair of very fleshy leaves, united in the lower part, with solitary daisy-like flowers appearing from the central fissure; the leaves usually shrivel after floweringC. obcordellum is a mat-forming succulent with greyish, ellipsoid leaf-pairs and white flowers 1.5cm across in late summer
Common Name: obcordellate cone plant
Family: Aizoaceae
Color flower: White in Summer
Hardiness: H2 (tender – cool or frost-free greenhouse)
Color foliage: Green and Grey/Silver in Autumn, Spring, Summer and Winter
Height: Up to 10 cm
Habit: Bushy
Habit: May be attacked by aphids
Pruning: No pruning required
Spreadid: South-facing
Time to ultimate height: 2-5 years
Exposure: Grow under glass in a mixture of two parts each sharp sand and loam and one part leaf mould, in full light. Provide low humidity. Water sparingly when in growth and keep completely dry at other times. No additional fertilizer is needed
Garden characteristics: Patio/Container Plants

Ferocactus glaucescens


Ferocactus are spherical to columnar cacti with prominent ribs bearing spiny areoles, the spines sometimes hooked, and funnel-shaped flowers in summer

F. glaucescens is a cactus with a globose to cylindric, grey-green stem to 60cm in height, sometimes clustered; with yellow spines to 2.5cm in length, and funnel-shaped yellow flowers 3-4cm across

Common Name: glaucous barrel cactus
Family: Cactaceae
Color flower: Yellow in Summer
Hardiness: H2 (tender – cool or frost-free greenhouse)
Height: 0.1-0.5 metres
Habit: Clump-forming
Habit: May be attacked by mealybugs
Pruning: No pruning required
Spreadid: North-facing
Time to ultimate height: 10-20 years
Exposure: Grow under glass in a standard cactus compost, in bright, filtered light, with low humidity. When in growth water moderately and feed every two or three weeks with a balanced liquid feed. Keep almost dry in the winter
Garden characteristics: Low Maintenance or Patio/Container Plants


Ferocactus variety

Mammillaria carmenae


Mammillaria are spiny cacti with spherical or columnar stems, often in clusters, with many prominent tubercles, and funnel-shaped flowers usually in a ring near the apex of the stem

M. carmenae is a clustering cactus with globose stems to 8cm in height, the areoles with about 100 cream radial spines; white or pink-tinged flowers 1cm in length are borne towards the apex of each stem in spring and summer

Common Name: Isla Carmen pincushion cactus
Family: Cactaceae
Color flower: Pink and White in Spring and Summer
Hardiness: H2 (tender – cool or frost-free greenhouse)
Height: Up to 10 cm
Habit: Clump-forming
Habit: May be attacked by mealybugs
Pruning: No pruning required
Spreadid: South-facing
Time to ultimate height: 5-10 years
Exposure: Grow under glass in a standard cactus compost, in bright, filtered light, with low humidity. When in growth water moderately and feed every two or three weeks with a balanced liquid feed. Keep almost dry in the winter
Garden characteristics: Patio/Container Plants

Gymnocalycium quehlianum – a stone or a flower?


Gymnocalycium can be spherical or cylindrical cacti, with ribs divided into rounded, spiny tubercles, and funnel-shaped flowers in early summer

G. quehlianum is a cactus with clustered, squat-globose ribbed and tubercled stems becoming bronze in full sun; flowers to 5cm across, white, funnel-shaped, sometimes flushed pink in the centre

Common Name: Quehla chin cactus
Family: Cactaceae
Color flower: Pink and White in Summer
Hardiness: H2 (tender – cool or frost-free greenhouse)
Height: Up to 10 cm
Habit: Clump-forming
Habit: mealybugs may be a problem
Pruning: No pruning required
Spreadid: South-facing
Time to ultimate height: 5-10 years
Exposure: Grow under glass in a standard cactus compost, in bright, filtered light, with good ventilation. When in growth water moderately and feed every two or three weeks with a balanced liquid feed. Keep almost dry in the winter
Garden characteristics: Low Maintenance or Patio/Container Plants

Mammillaria sphaerica


Mammillaria are spiny cacti with spherical or columnar stems, often in clusters, with many prominent tubercles, and funnel-shaped flowers usually in a ring near the apex of the stem

M. sphaerica is a clustering cactus with globose stems to 5cm diameter, with short, white or yellow spines and yellow flowers to 3cm across in spring or summer

Common Name: longmamma nipple cactus
Family: Cactaceae
Color flower: Yellow in Spring and Summer
Hardiness: H2 (tender – cool or frost-free greenhouse)
Height: Up to 10 cm
Habit: Bushy
Habit: May be attacked by mealybugs
Pruning: No pruning required
Spreadid: South-facing
Time to ultimate height: 5-10 years
Exposure: Grow under glass in a standard cactus compost, in bright, filtered light, with low humidity. When in growth water moderately and feed every two or three weeks with a balanced liquid feed. Keep almost dry in the winter
Garden characteristics: Patio/Container Plants

Mammillaria plumosa in your patio – interesting and unusual


Mammillaria are spiny cacti with spherical or columnar stems, often in clusters, with many prominent tubercles, and funnel-shaped flowers usually in a ring near the apex of the stem

M. plumosa is a clustering cactus forming a mound of globose stems to 6cm diameter, hidden by the dense white radial spines; flowers 1.5cm in length, creamy-white or dull pink, in late summer

Common Name: feather cactus
Family: Cactaceae
Color flower: Cream and Pink in Summer
Hardiness: H2 (tender – cool or frost-free greenhouse)
Height: Up to 10 cm
Habit: Clump-forming
Habit: May be attacked by mealybugs
Pruning: No pruning required
Spreadid: North-facing
Time to ultimate height: 5-10 years
Exposure: Grow under glass in a standard cactus compost, in bright, filtered light, with low humidity. When in growth water moderately and feed every two or three weeks with a balanced liquid feed. Keep almost dry in the winter
Garden characteristics: Patio/Container Plants

Sempervivum ciliosum – cactus in your home


Sempervivum are evergreen perennials forming mats of fleshy-leaved rosettes, often attractively coloured, with star-shaped pink or pale yellow flowers in summer

S. ciliosum is a fleshy, mat-forming perennial with very hairy, globose grey-green rosettes to 5cm in width, and cymes of greenish-yellow flowers on stems to 10cm

Common Name: Teneriffe houseleek
Family: Crassulaceae
Color flower: Pale Green and Pale Yellow in Summer
Hardiness: H4 (hardy – average winter)
Color foliage: Green and Grey/Silver in Autumn, Spring, Summer and Winter
Height: Up to 10 cm
Habit: Mat forming
Habit: Young growth may be attacked by slugs
Pruning: No pruning required
Spreadid: North-facing
Time to ultimate height: 2-5 years
Exposure: Grow in moderately fertile, humus-rich, moist but well-drained soil in full sun
Garden characteristics: City/Courtyard Gardens, Coastal, Cottage/Informal Garden, Flower borders and beds, Garden Edging, Gravel Garden, Patio/Container Plants, Rock Garden or Wildlife Gardens