Saguaro (Carnegiea gigantea)
Care, watering, light and tips for Saguaro on Floravia.
Quick facts
- Family: Cactaceae
- Difficulty: Easy to care for
- Watering: every 21 days
- Light: Full sun
- Temperature: 10–40 °C
About Saguaro
The Saguaro (Carnegiea gigantea) is a giant, columnar cactus, iconic to the Sonoran Desert, capable of living over 150 years. It is characterized by its branched stems resembling arms, covered in spines and nocturnal white flowers. It makes a spectacular centerpiece for desert gardens or spacious patios in hot, dry climates.
Native range
Sonoran Desert (southwestern United States and northwestern Mexico)
Care tips
It requires full, direct sunlight all day for optimal growth. Watering should be extremely sporadic, only during the warmer months and when the soil is completely dry, avoiding waterlogging which is fatal. It needs a very well-draining, sandy, and rocky substrate, similar to its natural habitat. A common mistake is overwatering, which leads to root and stem base rot.
How to save a dying Saguaro
- Warning signs
- Softening stem, black or yellow spots, deep wrinkles, leaning cactus.
- First aid
- Inspect roots for rot. Cut soft sections with a sterile knife. Ensure good drainage and reduce watering.
- What kills it
- Overwatering, especially in winter. Poorly draining soil is fatal for saguaro.
- Can it be saved?
- Yes, if rot hasn't affected the stem's base or main vascular system. Act quickly.