Cactus Growing Guide

The cactus family includes over 1500 species

Crop Rotation Group

Miscellaneous ●

Soil

Fertile, well-drained soil.

Position

Full sun.

Frost tolerant

Varies with species. Some are hardy perennials, tolerating winter cold to -34°C (-30°F), while many other species cannot survive hard freezes.

Feeding

None needed.

Spacing

Single Plants: 20cm (7") each way (minimum)
Rows: 20cm (7") with 20cm (7") row gap (minimum)

Sow and Plant

It takes several years to grow a cactus from seed to mature blooming size so most gardeners start with purchased plants, which can be carefully moved to a slightly larger pot. Indoors, keep potted cacti in a very sunny window. Outdoors, they benefit from partial afternoon shade. If pieces or branches break off a cactus, let the wound dry for one to two weeks and then set it to root in lightly dampened potting mix.
Our Garden Planner can produce a personalised calendar of when to sow, plant and harvest for your area.

Notes

Native to the Americas, cacti are well adapted to hot, dry conditions. Hardy types can be used as landscape plants, with small tropical species used as indoor-outdoor houseplants. Wear thick gloves when handling any cactus. When transplanting, it helps to wrap the plant in paper to reduce injury to both you and the cactus.

Harvesting

Edible species like prickly pear cactus are harvested in summer.  Potted cacti often produce showy blossoms in winter.

Planting and Harvesting Calendar

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Pests which Affect Cactus

Aphids (General)

Slug

Snail