Stenocereus Pruinosus or stenocereus griseus Gray Ghost Organ Pipe

About the FRUIT. (Pitaya).
Fruits with red and orange flesh of the columnar cactus pitaya (Stenocereus pruinosus) were studied to evaluate physical characteristics, total soluble solids, betalains and soluble phenols content, and antioxidant activity. Fruits had, in average, weight of 179.0 g, 9.8 °Brix, 9.4 % carbohydrates, 1.25 % protein, 0.11 % ethereal extract, 0.60 % crude fiber, and 0.62 % ash. Also, fruits resulted rich in Fe (22.8-27.8 mg/kg). Hue angle and contents of betacyanins, betaxanthins (μg/g dry sample), and total soluble phenols (mg GAE/g fresh sample) were 19.8°, 2860.0, 3210.0, and 1.6 in the red material, and 28.9°, 470.0, 2670.0, and 1.2, respectively, in the orange fruit. The antioxidant capacity was higher in the red material, since the ABTS (2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid)) technique reported 1090.6 and 735.4 μmol of Trolox equivalents/g fresh flesh in red and orange fruits, respectively, while the oxygen radical absorbance capacity (ORAC) assay reported 7.84 and 5.16 μmol of Trolox equivalents/g fresh flesh, respectively. The chromatographic profile showed five betalains in red fruits, but only four of them were observed in those orange fleshed.

Reference:
https://pubmed.ncbi.nlm.nih.gov/24142131

Stenocereus pruinosus is a species of cactus. It is endemic to Mexico and occurs in the states of Veracruz, Puebla, and Oaxaca, They call it "pitayo de mayo".

Stenocereus pruinosus, also commonly known as the ‘Gray Ghost Organ Pipe’, can grow up to a height of 6-7 meters and enter dormancy in winters.

Growth Rate

Stenocereus pruinosus has a slow growth rate.

Flowering

This attractive cactus blooms in Early spring and produces Pink, purple, or white flowers.

Watering and Feeding

You can water it regularly in the spring and fall when it grows the most. This plant, however, goes dormant in the winter. As a result, you should reduce or stop watering entirely. Even though Stenocereus pruinosus is a low-maintenance species, it could benefit from some fertilizer.

Soil

The most important factor to consider when selecting a potting medium for this plant is good drainage. It is best to look for a commercial mix designed specifically for cactus plants.

Hardiness

Gray Ghost Organ Pipe is not frost-hardy. It has a frost tolerance of 10° C (50° F) and belongs to the hardiness zone of 8b.

Light

This ornamental houseplant requires direct sunlight and full sun exposure. If you are growing these cacti indoors, make sure they get at least 12 to 18 hours of direct sunlight per day.


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