Trichocereus terscheckii, commonly referred to as the Argentine Saguaro or Cardón Grande, is a majestic columnar cactus native to Argentina. This slow-growing giant can reach impressive heights of up to 30 feet (9 meters) in its natural habitat. It features thick, ribbed, blue-green stems adorned with clusters of golden-yellow spines. Known for its striking silhouette and occasional large white, fragrant flowers, it is both a beautiful and hardy addition to desert gardens or indoor collections when young.
With its sculptural elegance and low-maintenance care needs, Trichocereus terscheckii is a remarkable choice for cactus enthusiasts and xeriscape gardens. Its towering presence and resilience make it a standout plant in any collection.
Light
Requires full sun or bright, direct light.
Indoors, place near a south-facing window to ensure sufficient light.
If transitioning outdoors, gradually increase light exposure to prevent sunburn.
Water
Water sparingly; allow the soil to dry out completely between waterings.
During the growing season (spring and summer), water every 2-3 weeks.
Reduce watering significantly in fall and winter, as it enters dormancy.
Humidity
Prefers dry conditions and thrives in low humidity.
Avoid high humidity environments, which can promote fungal issues.
Temperature
Tolerates a wide temperature range, ideal between 10-32°C.
Can survive brief exposure to light frost (down to -4°C), but prolonged cold should be avoided.
Soil
Use a well-draining cactus or succulent mix.
Add sand, pumice, or perlite to improve aeration and drainage.
Avoid heavy, compacted soils that retain water.
Fertilisation
Feed with a diluted cactus fertiliser once a month during the growing season.
Avoid fertilising during dormancy in fall and winter.
Repotting
Repot every 2-3 years when young to accommodate growth.
Use a pot with drainage holes and a size slightly larger than the root ball.
Handle with care due to its sharp spines.
Pruning
Minimal pruning is needed. Remove damaged or dead sections with sterilized tools.
Allow cuts to callus over to prevent infection.
Propagation
Propagated via seeds or cuttings.
Seeds germinate best in warm, moist conditions with good air circulation.
Cuttings should be allowed to callus for a few days before planting in dry soil.
Am I Pet Friendly?
Unfortunately I am NOT pet friendly.
What size am I?
I am in a 8cm pot.