Cactuses (or cacti) of this type have quite a long life span – it takes them more than 50 years to develop one of their bristly side arms. It's an interesting fact that the arms of this plant increase its reproductive capacity.

Some botanists say that the plant is able to live up to 150 years while its average height is about 45 ft! These big boys grow slowly and have enough time to become so huge.

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