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PlantSnap
Plant Care
Saguaro
(Carnegia gigantea)
Also Known As
Saguaro, Saguaro cactus
About This Plant
Carnegia gigantea is a large, slow-growing cactus species native to the Sonoran Desert in the southwestern United States and northwestern Mexico. It is characterized by its tall, columnar shape, with branches growing high up on the stem. The plant can reach heights of up to 70 feet (21 meters) and can live for over 150 years.
Plant Care Instructions
Outdoor Size Range
Height: 15-70 feet (4.5-21 meters), Width: 2-3 feet (60-90 cm)
Light Requirements
Carnegia gigantea requires full sun exposure to grow properly. It needs at least 6 hours of direct sunlight every day.
Humidity Needs
This cactus species is adapted to low humidity environments and does not require any additional humidity.
Fertilizing Schedule
This cactus species does not require regular fertilization. However, a slow-release cactus fertilizer can be applied once a year in the spring to promote growth.
Pruning Guidelines
Pruning is not necessary for this cactus species, but dead or damaged branches can be removed as needed.
Common Pests and Diseases
Common pests for Carnegia gigantea include spider mites, scale insects, and mealybugs. Diseases such as bacterial necrosis and fungal infections can also occur.
Indoor Size Range
Not suitable for indoor growth
Watering Schedule
The Saguaro cactus is adapted to survive in arid environments and can go long periods without water. It is important to avoid overwatering, as this can lead to root rot. Watering should be done sparingly, but deeply, allowing the soil to dry out completely between waterings.
Temperature Range
Carnegia gigantea can tolerate a wide range of temperatures, from as low as 20°F (-6°C) to as high as 120°F (49°C). However, it is important to protect the plant from frost and freezing temperatures.
Growing Season
The growing season for this cactus species is in the spring and summer months.
Growing Difficulty Level
Carnegia gigantea is considered moderately difficult to grow due to its slow growth rate and specific environmental requirements. It is important to provide the plant with the proper growing conditions and avoid overwatering.
USDA Hardiness Zones
USDA hardiness zones 9b to 11
Did You Know?
The Saguaro cactus is the largest cactus species in the United States and is the state flower of Arizona.
