Pachycereus pringlei – Mexican Giant Cardón

The largest cactus species in the world, Pachycereus pringlei is a columnar cactus with thick, ribbed stems and a powerful presence. In its native habitat it can reach over 10 metres tall, but even as a young indoor plant, its slow-growing, architectural form makes a striking addition to sunny rooms. Thick stems store water efficiently, making this giant gentle to care for.

Scientific Name
Pachycereus pringlei (named in honour of American botanist Cyrus Pringle; pachy- = thick, cereus = waxy)

Synonyms
None widely used, but occasionally confused with Carnegiea gigantea (Saguaro Cactus)

Common Name
Cardón Cactus, Mexican Giant Cardón, Elephant Cactus

Origin
Native to northwestern Mexico – particularly Baja California and Sonora

Light
Loves full sun. Needs at least 4–6 hours of direct light daily. South-facing windowsills or sunrooms are best. Supplement with grow lights in winter if needed.

Water
Allow soil to dry out completely between waterings. Water deeply, then let excess drain away. In winter, water sparingly – once a month or less.

Humidity
Prefers dry, desert-like air. Avoid humid rooms or placing near humidifiers.

Soil
Use a cactus mix with extra sand, perlite, or pumice. Ensure excellent drainage and never let the pot sit in water.

Food
Feed every 4–6 weeks during spring and summer with a low-nitrogen cactus feed. Pause in winter.

Temperature
Ideal range is 20–30°C. Can tolerate temperatures down to 5°C if kept totally dry.

Pet-safe
No – toxic if ingested and has sharp spines. Keep out of reach of children and pets.

Sprouts Top Tips
Don’t overpot – this cactus likes to be slightly root-bound. Choose a deep pot with drainage holes to support vertical growth.

Extras
Forms a thick woody base with age and can be trained into dramatic multi-column shapes indoors.

Did You Know?
In its native Mexico, Pachycereus pringlei has been recorded growing over 19 metres tall – taller than any other cactus on Earth!