Echinopsis huascha var. grandiflora (Trichocereus grandiflorus) - Red Torch Cactus

Trichocereus grandiflorus is the horticultural name by which this cactus is widely known; however, modern taxonomic sources treat it within the species Echinopsis huascha, with the form frequently listed as Echinopsis huascha var. grandiflora. It is native to Catamarca, Argentina, where it grows in mountainous areas and on rocky slopes.

It is a globular to short-columnar cactus that can branch from the base and form decorative clusters over time. Its main attraction is its large, intensely colored flowers, which appear near the tops of the stems. The classic grandiflora form produces predominantly deep red to crimson-red flowers, which are very large in relation to the plant’s size.

🌿 Botanical characteristics

• Horticultural name: Trichocereus grandiflorus

• Botanical name frequently used today: Echinopsis huascha var. grandiflora

• Synonyms: Lobivia grandiflora, Helianthocereus grandiflorus

• Common name: Red Torch Cactus

• Family: Cactaceae

• Origin: Catamarca, Argentina

• Perennial succulent cactus

• Globular to short-cylindrical stems

• Branches from the base

• Approximately 12–18 ribs

• Yellowish-brown to reddish-brown spines

• Large, diurnal, funnel-shaped flowers

• The classic form produces predominantly deep red flowers
  

☀️ Growing conditions and care

• Light: prefers a very bright position with direct sunlight. Plants previously grown in a greenhouse should be gradually acclimatized to intense sunlight.

• Soil: very airy, porous and well-draining, with a substantial mineral component.

• Watering: moderate during the active growing period; allow the soil to dry out thoroughly between waterings. Avoid excess water.

• Flowering: occurs during the warm season in sufficiently mature, well-grown specimens.

• Winter: benefits from a cooler, dry rest period with very limited watering.

• Cold tolerance: LLIFLE mentions tolerance of approximately -7°C or even lower under favorable conditions; however, potted specimens should be protected from frost and kept in dry soil at low temperatures.

• Fertilization: moderate, during the active growing period, using a fertilizer intended for cacti and succulents.

🌱 Secret Garden soil recommendation

👉 For Trichocereus grandiflorus, we recommend Secret Garden Professional Soil for Cacti, Succulents and Adenium - SG MIX, an airy mix with rapid drainage.

➡️ View the product: https://secretgarden.ro/products/substrat-cactusi-suculente-adenium

✨ What makes it special

• very large flowers in relation to the plant’s size;

• intense crimson-red coloration in the classic form;

• robust cactus that is relatively easy to grow;

• can form spectacular clusters over time;

• impressive flowering during the warm season;

• highly valued in horticultural hybridization programs, which have produced forms with flowers in many other colors.

📌 Note: The plant is sold without flowers. Shape, size, degree of branching and spination may naturally vary from one specimen to another. As a result of growth, handling or transport, the cactus may have minor scars, superficial spots, areas of corking or damaged spines, without affecting the plant’s health or viability.

Height including pot: approx. 8 cm