Opuntia Ficus Indica Monster Cactus Pad (Delicious Red Fruit) Nopal Castilla Tuna The pad you will receive is a young healthy pad approximately 10"-12" long in size This type of cactus pad can get to be up to 20" long and 2"+ thick The Famous Giant Ficus Indica Is cultivated in Mexico as a source of food. It grows 15-20 feet tall depending on the soil and a single mature cactus paddle can weight up to 8+ lbs.