Common Name: Rincon Cactus
Family: Cactaceae
Origin: Mexico (specifically from the states of Durango and Zacatecas)
Description:
Thelocactus rinconensis is a small, spherical cactus known for its striking appearance. Typically reaching heights of 10-20 cm (4-8 inches), it features prominent, rounded tubercles and a series of well-defined ribs. The cactus is adorned with sharp, often colorful spines that can range from white to reddish-brown. In late spring to early summer, Thelocactus rinconensis produces vibrant, funnel-shaped flowers that can be pink, red, or yellow, making it a popular choice for collectors.
 
Light Requirements:
Sunlight: Prefers full sun to partial shade. Ideally, it should receive 4-6 hours of direct sunlight daily.
Avoid: Extended periods of shade, which can lead to etiolated growth.
 
Watering:
Frequency: Water 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 thoroughly, allowing excess to drain away. Avoid letting the cactus sit in water 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, ideally between 20-30°C (68-86°F). Can tolerate brief cooler periods, but protect from frost.
Humidity: Prefers low humidity; avoid overly humid environments.
 
Fertilization:
Frequency: Fertilize during the growing season with a diluted cactus fertilizer once a month. Skip fertilization during the winter.
Type: Use a balanced, water-soluble fertilizer formulated for cacti.
 
Repotting:
When: Repot every 2-3 years or when it outgrows its container.
Method: Carefully remove the cactus from its pot and replace the old soil with fresh cactus mix, ensuring minimal disturbance to the roots.
 
Pests and Problems:
Common Pests: Watch for pests such as mealybugs and scale. Treat infestations promptly with insecticidal soap or neem oil.
Rot: Overwatering can lead to root rot. Ensure proper drainage and avoid prolonged sitting in water.
 
Additional Tips:
Propagation: Thelocactus rinconensis can be propagated from seeds or offsets. Seeds should be sown in a well-draining medium and kept warm and moist until germination.
Display: Ideal for rock gardens, pots, or as part of a succulent collection. Its unique shape and colorful flowers make it a standout addition.
 
With proper care, Thelocactus rinconensis can thrive and reward you with its beautiful blooms!