Echinocactus ingens, commonly known as the Giant Barrel Cactus, is a large, robust cactus characterized by its cylindrical, barrel-like shape. It typically grows to heights of 1-2 meters and can reach up to 60 cm in diameter. This cactus features prominent ribs (usually around 12-18) that are adorned with long, yellow to white spines. As it matures, Echinocactus ingens can develop a beautiful crown of bright yellow flowers, which usually bloom in late spring and summer, adding to its visual appeal.
 
Light Requirements:
Sunlight: Prefers full sun for at least 6-8 hours a day. A south or west-facing location is ideal.
Avoid: Deep shade, which can lead to etiolation and weaken the plant.
Watering:
Frequency: Water thoroughly during the growing season (spring and summer) when the top 1-2 inches of soil are dry. In fall and winter, reduce watering significantly.
Method: Water deeply at the base, allowing excess water to drain out completely. Ensure the pot has good drainage to prevent root rot.
Soil:
Type: Use a well-draining cactus mix or create your own by mixing potting soil with sand, perlite, or pumice.
pH: Slightly acidic to neutral (around 6.0 to 7.0).
Temperature and Humidity:
Temperature: Thrives in warm conditions between 20-30°C (68-86°F). Can tolerate higher temperatures but should be protected from frost.
Humidity: Prefers low humidity; avoid high humidity environments to minimize the risk of rot and fungal issues.
Fertilization:
Frequency: Fertilize during the growing season with a diluted cactus fertilizer once a month. Do not fertilize during winter dormancy.
Type: Use a balanced, water-soluble fertilizer formulated for cacti.
Repotting:
When: Repot every 3-5 years or when the cactus outgrows its container.
Method: Carefully remove the cactus from its pot, ensuring minimal disturbance to the roots, and replace with fresh, well-draining soil.
Pests and Problems:
Common Pests: Look out for mealybugs, spider mites, and scale. Treat infestations promptly with insecticidal soap or neem oil.
Rot: Overwatering can lead to root rot. Ensure good drainage and allow the soil to dry out thoroughly between waterings.
 
Additional Tips:
Propagation: Echinocactus ingens is typically propagated from seeds. Seeds should be sown in a well-draining medium and kept warm and moist until germination.
Display: Ideal for larger container gardens, rock gardens, or as a standalone specimen in a succulent collection. Its impressive size and unique shape make it a striking focal point.
 
With the right care, Echinocactus ingens can thrive and add a bold statement to your cactus collection!