Emm's Plant House

Myrtillocactus geometrizans 12cm H18cm

£11.00 GBP

Sale Sold out

Taxes included.

Pot Size 12cm H18cm

Quantity

Myrtillocactus geometrizans is a striking blue-green cactus known for its sculptural, geometric ribbing and branching tree-like form. Highly architectural and fast-growing for a cactus, it adds an instant desert aesthetic to any bright indoor space. Its unique colouring and bold silhouette make it a favourite among collectors and modern interior designers alike.

Full Botanical Name: Myrtillocactus geometrizans
Common Names: Blue Candle Cactus, Bilberry Cactus
Country and/or Region of Origin: Mexico (arid and semi-arid regions)
Growing Conditions in Native Habitat: Grows in hot, sunny, rocky deserts with excellent drainage and long dry periods; withstands intense sun and high temperatures

Care Guide

Care Guide:

Light: Requires very bright light and several hours of direct sun daily. South-facing windows or sunrooms are ideal.

Ideal Room: Bright conservatories, sunrooms, south-facing living rooms, greenhouses, or modern minimal interiors

Feeding: Feed with diluted cactus fertiliser every 4–6 weeks during spring and summer. No feeding required in winter.

Humidity: Very dry air preferred; thrives in low-humidity indoor environments.

Ideal Temperature: 20–32°C in summer; tolerate down to 5–8°C in winter if kept dry (protect from frost).

Watering: Water deeply and allow soil to fully dry out between waterings. Water sparingly in winter.

Pet/Child Safe: Generally non-toxic (genus level), but spines pose a physical injury risk. Keep out of reach of pets and children.

Soil Type: Very fast-draining cactus mix enriched with grit, sand, and pumice for airflow

Propagation: Stem cuttings; allow cut surfaces to callus for 1–2 weeks before potting into dry cactus substrate

Eventual Height and Spread: Indoors 60–120 cm; outdoors (in habitat) up to 4–5 m with a wide, branching structure

Growth Rate: Moderate to fast for a cactus; notably quicker than many columnar species

Pests and Treatment: May attract mealybugs and scale insects; treat promptly with cactus-safe insecticides or neem oil

Repotting: Every 2–3 years or when it becomes top-heavy; choose a heavy pot to stabilise the vertical growth

Pruning: Minimal; remove damaged stems or shape slightly by cutting branches (allow to callus before replanting if propagating)

Air Purification: Moderate; known to help improve air quality, while bringing bold, sculptural visual impact

Folklore: In Mexico, mature plants of this species produce edible “bilberries,” once believed to bring strength and endurance to travellers

View full details