Stenocereus griseus (Lemaireocereus griseus)

Stenocereus griseus (Lemaireocereus griseus)

Description

Stenocereus griseus, also known as the Gray Ghost or Mexican Organ Pipe Cactus, is a majestic and fast-growing columnar cactus native to the arid regions of northern South America and Mexico. This elegant species features smooth, bluish-gray stems with pronounced ribs lined by short, golden spines. It thrives in warm climates and is prized for its architectural beauty, whether grown in the landscape or as a statement container plant.

Growth Habit

• Size: Reaches heights of 20–30 feet in its native habitat; smaller in cultivation.
• Structure: Clusters of tall, upright stems form dense thickets over time.

Light Requirements

• Preferred Light: Full sun is essential for optimal growth and spine development.
• Indoor Care: Requires a bright location, such as a south-facing window or under grow lights.

Watering

• Water deeply when the soil is completely dry, especially during the active growing season (spring and summer).
• Reduce watering in the fall and winter when the plant enters dormancy. Overwatering can lead to root rot.

Temperature Tolerance

• Hardy to temperatures as low as 25°F (-4°C) with protection from prolonged frost.
• If temperatures are going to be lower than this in your area, we highly recommend adding a Heat Pack to your order.

Soil Requirements

• Prefers a well-draining cactus and succulent mix. Adding sand, pumice, or perlite improves drainage and prevents water retention.

Care Tips

• This cactus produces large, nocturnal flowers that are white and fragrant, followed by edible, round fruits.
• Handle with care due to sharp spines. Gloves are recommended during pruning or repotting.
• Fertilize during the growing season with a diluted cactus fertilizer for robust growth.

Common Names

• Gray Ghost
• Mexican Organ Pipe Cactus
• Pitayo de Mayo

This cactus will ship bare root and will be ready to place directly in a well draining soil mix like our Custom Cactus Mix.

Photos in the listings unless otherwise specified are representative of the plant that will be sent to you.
However, Plants grow differently and each plant may vary slightly in shape, size, growth pattern, etc.
Of course, if you receive a plant that you are dissatisfied with please reach out to us. We want to make it right!

If temperatures where you live will be much lower than 20℉ even heat packs may not work. You may consider waiting until things warm up a bit. We know you love your plants just like we do and we wouldn't want any of them to freeze.