Opuntia robusta is widely available in the Southern United States and in Mexico. It is an attractive blue cactus and almost spineless.
LIGHT | Full sun
COLD TOLERANCE -5 ºC
WATER Water generously when soil is dry.
SOIL PH Acid or alkaline
SOIL TYPE 50% potting mix 50% non organic material (pumice or perlite).
FERTILIZER Fish emulsion, kelp solution, worm casting, shrimp compost.
PROPAGATION METHODS Pad cuttings or branch segments
HUMIDITY LEVEL Low
ACTIVE SEASON Summer
NOTE NA
INSTRUCTIONS FOR ROOTING CUTTINGS
Lay the cutting flat on top of the soil. Roots should form in about two weeks. Only water the cutting sparingly once roots emerge. Keep the plant in bright shade during the rooting period. To avoid burning the leaves, gradually acclimatize the plant to full sun.