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Myrtillocactus geometrizans (Blue Candle)

Blue Candle, Garambulla, Our Father, Blue Flame, Bilberry Cactus, Whortleberry Cactus, Blue Myrtle cactus, Cereus geometrizans

Myrtillocactus geometrizans, Blue Candle, Garambulla, Our Father, Blue Flame, Bilberry Cactus, Whortleberry Cactus, Blue Myrtle cactus, Cereus geometrizans
Myrtillocactus geometrizans, Blue Candle, Garambulla, Our Father, Blue Flame, Bilberry Cactus, Whortleberry Cactus, Blue Myrtle cactus, Cereus geometrizans

Commonly cultivated around the world, Myrtillocactus geometrizans (Blue Candle) is a shrubby or tree-like branching cactus resembling a candelabra with age. The thick stems, up to 4 in. across (10 cm), are bluish-green, each with 5-8 ribs. Along the stems are areoles that bear 5-9 black radial and central spines. In summer, showy greenish-white flowers are followed by dark red or blue, very sweet, oblong fruits. Despite the large stature of this cactus, the flowers, 1 in. across (2.5 cm), and fruits, 1 in. across (2.5 cm), are rather small. Blue Candle starts blooming when it is about 2 ft. tall (60 cm). Easy to grow, Blue Candle is reported to be cold-hardy down to 25°F (-4°C) for short periods. Adding long-lasting beauty to the landscape, this eye-catching columnar cactus is planted worldwide in tropical climate gardens. This desert plant is commonly used as a rootstock for grafting cacti.

  • Grows up to 10-15 ft. tall (300-450 cm) and 6-10 ft. wide (180-300 cm).
  • Easily grown in full sun in a well-drained soil with small gravel added to ensure good drainage. Appreciates light shade when young. Water regularly when in growth. Make sure you let the soil dry out between waterings. No water should ever be allowed to stand around the roots. Keep the plant rather dry and water only enough to keep the stems and branches from shriveling. Drought tolerant.
  • Great for desert gardens, rock gardens, succulent gardens or Mediterranean gardens.
  • If keeping as a potted plant, repot at least every other year in order to allow the proper room for growth.
  • Propagate by seed or stem cuttings during the summer months.
  • No serious pest or disease issues. Keep an eye out for mealybugs. Susceptible to fungal diseases if over-watered.
  • Native to Mexico.

Requirements

Hardiness 9 - 11
Plant Type Cactus & Succulents, Shrubs, Trees
Plant Family Cactaceae
Common names Blue Candle
Exposure Full Sun
Season of Interest Spring (Early, Mid, Late), Summer (Early, Mid, Late), Fall, Winter
Height 10' - 15' (3m - 4.6m)
Spread 6' - 10' (180cm - 3m)
Spacing 72" - 120" (180cm - 3m)
Maintenance Low
Water Needs Low
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Showy, Evergreen
Tolerance Drought, Deer, Rabbit, Dry Soil, Rocky Soil
Garden Uses Beds And Borders
Garden Styles Mediterranean Garden, Gravel and Rock Garden
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Recommended Companion Plants

Agave parryi var. truncata (Artichoke Agave)
Echinocactus grusonii (Golden Barrel Cactus)
Beaucarnea recurvata (Ponytail Palm)
Euphorbia tirucalli ‘Sticks on Fire’ (Pencil Cactus)
While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.
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Requirements

Hardiness 9 - 11
Plant Type Cactus & Succulents, Shrubs, Trees
Plant Family Cactaceae
Common names Blue Candle
Exposure Full Sun
Season of Interest Spring (Early, Mid, Late), Summer (Early, Mid, Late), Fall, Winter
Height 10' - 15' (3m - 4.6m)
Spread 6' - 10' (180cm - 3m)
Spacing 72" - 120" (180cm - 3m)
Maintenance Low
Water Needs Low
Soil Type Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Well-Drained
Characteristics Showy, Evergreen
Tolerance Drought, Deer, Rabbit, Dry Soil, Rocky Soil
Garden Uses Beds And Borders
Garden Styles Mediterranean Garden, Gravel and Rock Garden
How Many Plants
Do I Need?

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