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Cactus SucculentConservatory Greenhouse

Disocactus ackermannii
  • RHS AGM

Ackermann's disocactus

An erect, perennial epiphytic cactus with flat thin slightly scalloped, fleshy stems, rarely 3-ribbed. The crimson to scarlet, red funnel-shaped flowers to 12cm have contrasting yellow pollen and white stigma lobes

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
5–10 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Loam
Sand
Moisture
Moist but well–drained
pH
Acid
Colour & scent
StemFlowerFoliageFruit
Spring Green Red
Summer Green Red
Autumn Green
Winter Green
Position
  • Partial shade
Aspect

South–facing or East–facing or West–facing

Exposure
Sheltered
Hardiness
H1C
Botanical details
Family
Cactaceae
Native to the UK
No
Foliage
Evergreen
Habit
Bushy
Genus

Disocactus are evergreen perennials with cylindrical main stems and flattened side shoots, bearing funnel-shaped, sometimes fragrant flowers on the margins, followed by fleshy white fruits

Name status

Correct

Plant range
S Mexico

How to grow

Cultivation

Under glass grow in acidic, moisture-retentive but sharply-draining compost, or a proprietary epiphytic cactus compost, in bright filtered light and moderate to low humidity. During the growing season water freely applying a balanced fertiliser for acid loving plants at half strength every two weeks from April to end September. Water only moderately and cease fertiliser applications during the winter. In frost free areas grow in hanging baskets or epiphytically in partial shade

Propagation

Propagate by seed at 27°C as soon as ripe in acidic loamless compost. Softwood cuttings may be taken in late spring

Suggested planting locations and garden types
  • Patio and container plants
  • Sub-tropical
Pruning

No pruning required

Pests

Can be susceptible to scale insects and mealybugs under glass

Diseases

Generally disease-free, except where grown in poorly draining soils which can result in root rot

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