Backebergia

Family. Cactaceae.

Origin. Mexico.

Description. Backebergia is a tree-like branched cactus with slender vertical stems with a diameter of 12 - 15 cm, having from 9 to 11 ribs; gray needle-like spines with black tips. The most interesting feature of this plant is that a very fluffy golden-brown cap, called the cephalium, develops at the top of the stem. It grows very quickly - every year it adds about 1 m of growth, while a narrowing appears on the stem caused by alternating phases of growth and rest. In young plants, the spines are lighter and more dense, due to the smaller diameter of the trunk and the absence of side shoots. In mature and old plants, the trunk widens at the base. The areoles are small with 2 - 4 central spines about 1 cm long and 10 thinner radial spines. The flowers are solitary, white-green, large - about 7 cm long and 4 cm in diameter.

Height. Up to 6 m.

Backebergia at home

Temperature conditions

It easily tolerates summer heat; in winter, a period of rest should be allowed and the temperature should be reduced to 14 - 16 ° C. 

Lighting

Bright, with slight shading from direct sunlight on summer days.

Substrate

A standard cactus mix with coarse sand, some organic matter and perlite for good drainage will do.

Feeding

Once a month only during the growing season with fertilizer for cacti, diluted to half the specified dosage.

Purpose

Due to its large size and rapid growth, this cactus is better suited for greenhouse maintenance.

Flowering time

Flowering occurs in spring.

Air humidity

It tolerates the dry air of heated rooms well and does not require spraying. 

Soil moisture

Watering is quite moderate during the period of active growth; keep it dry in winter.

Transplant

Young plants are repotted as they grow in the spring, gradually increasing the size of the container. Mature specimens can be kept in the same container for several years.

Reproduction

Seeds.

Pests and diseases

Harmful insects can include mealybugs, spider mites and scale insects.