Opuntias grow with water, right temperatures, right soil and sufficent attention.
They show a remarkable abilty to come back from cold, scorching heat or neglect. But if you treat them well, they will surprise you with growth, flowers and some more growth.
This form has short glochids and longer spines, and large yellow flowers. Comes from Argentina
Plant with flowers
This form has (for a Tunilla) rather large, red flowers, which appear in abundance. Comes from Argentina