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Blue Candle Cactus Information
About The Blue Candle Cactus
The Myrtillocactus geometrizans, commonly referred to as Blue Candle Cactus, is a species of Cacti native to Mexico. It is a popular variety that gets its name due to its unusual blue-green colored stems that branch freely like a candelabra. Like most cacti, this evergreen cactus is drought-tolerant and will thrive well in a sunny window.
Note: Our cacti aren’t cuttings—they’re fully rooted plants! This means they’re already established and ready to thrive in their new home. Succulents naturally have shallow roots, so don’t be surprised if that’s what you see, it’s a completely natural trait!
- Each plant is unique; size and shape fluctuate by season so all measurements are shown as a range
- Medium plants measure 5-9" tall from the soil line to the top of the foliage
- Arrives in a nursery grow pot nestled in your planter choice
Sizing Guide
Small
Approximately 5" in diameter, fits plants in a 4" grow pot or smaller
Medium
Approximately 7" in diameter, fits plants in a 6" grow pot or smaller
Large
Approximately 10-12" in diameter, fits plants in a 10" grow pot or smaller
Massive
Approximately 12-14" in diameter, fits plants in a 12" grow pot or smaller
Watering Requirements
Water every 2-3 weeks, allowing soil to dry out between waterings. Expect to water more often in brighter light and less often in lower light.
Sunlight Requirements
Thrives in bright direct light, but can tolerate bright indirect light.
Humidity Requirements
Cacti prefer low humidity levels, so it's best to keep them in a dry environment. Avoid placing them in a bathroom or other area with high humidity, as this can cause fungal diseases to develop or the soil to remain moist for too long.
Pet-Friendly Plant?
Yes, this plant is safe for homes with pets.
Why is the base of my cactus turning brown and woody?
This is completely normal and healthy! It is a biological process in cacti called corking. As the cactus grows larger and heavier, the base turns into a woody, bark-like structure to support the top-heavy weight.
Why is my Cactus turning yellow and stretching out?
Your plant is most likely suffering from etiolation caused by low light conditions. Move the cactus to your absolute brightest window, ideally a south-facing sill that gets 6-8 hours of direct sunlight daily.
Why is my Blue Candle cactus losing its frosty blue color and turning green?
In its native arid habitats of Peru, the cactus secretes this heavy blue wax to act as a natural sunscreen against intense, high-altitude UV rays. When grown indoors or in a dim room, the plant stops producing this wax because it doesn't need the protection, causing new growth to look standard green. Provide 6-8 hours of direct sunlight daily by placing it on your brightest south-facing windowsill, or use a full-spectrum LED grow light.
Our planters are made from the highest quality materials, and designed to complement a range of styles.
No Exterior Planter
Ceramic Planters
Grow Pot
Plastic container with drainage holes used by our greenhouse
Hyde
Includes drainage hole & matching saucer
Grant
No drainage hole; use as cache pot or add lava rocks
All of our plants ship in premium packaging for zero damage on arrival. Here’s what you can expect in your box on arrival:
Your Blue Candle Cactus
Fully rooted in a nursery pot with soil intact
Custom Protection System
Corner guards, soil stabilizer, and branch sleeves keep it secure
Pre-Watered & Ready
Each plant is watered 24 hours before it is shipped
Care Instructions Card
Includes expert-curated care tips to help your plant thrive far beyond the first 30 days.
Perfect For Gifting
No pricing or packing slips included with gifts! Just the plant and a note.
Additional Resources
- Video: Workshop Tutorial 1
- Video: Workshop Tutorial 2
- Video: Workshop Tutorial 3
- How to Care for a Cactus
- How Often & How Much You Should Water Houseplants
- How to Use Grow Lights for Houseplants
- Understanding Lighting in Your Home and How It Affects Your Plants
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Why Choose The Sill?
Not all Blue Candle Cactuss are created equal
Greenhouse Grown
Not warehouse-held. Hand-picked and cared for by our experts.
Indoor Ready
Pre-conditioned to indoor light conditions.
Hand-Selected
Inspected by experts. Only our best ship out.
30-Day Guarantee
Free replacements if not happy and healthy.