The San Pedro Cactus is a large columnar cactus, 3-6 meters tall, multi stemmed extending from the base. The stems may also emerge around broken branches.
Stem colour range from light yellow-green, green, blue-green, or deep emerald-green in colour with a glaucous powdery coating. Stems have diameters of 6-15cm with 6-8 rounded ribs or columns.
White areoles are spaced evenly along the ribs about 2 cm apart.
The areoles can produce up to 7 or 8 yellow-brown spines. These spines can be up to 2cm long. Spines are typically shorter or absent in cultivated species.
Flowering can be rare and occurs during the summer months. It is usually well established, mature plants that produce the exquisite, large (19-24cm) white flowers that are highly fragrant. The flowers appear from the areola as a small hairy ball which extend out to 20cm. The ephemeral flowers only open at night lasting only 1-2 days. Fertilised flowers become dark green oblong fruit (5-6cm long) (not edible) known as pitahaya.
Growing and Care
This Guardian or Whistler cactus can easily be grown potted indoors and outdoors.
It is a great cactus for beginners as it handles more fertiliser and water better than most cacti.
It is fast growing if kept in well drained, nutrient rich soil with plenty of natural light.
It can also survive extreme heat and drought, as well as temperatures below 0 degrees Celsius.
But is best grown in a temperate climate.
You can feed your cactus with a bit of organic fertiliser occasionally.
Excessive overexposure to sunlight may cause the plant to yellow and be sunburned.
Lower levels of light slow growth and may cause the plant to become thin.
Excessive watering may lead to root rot.
San Pedro cactus is susceptible to fungal infections and pests.
Please contact us should you require any assistance with the growth and care of your cactus.