Purple shamrocks are ideal houseplants that tolerate both dry and humid conditions. The stems can get very long and reach 6–8 feet tall. Purple shamrocks have been known to survive for several years in areas with cold winters and cool summers. It is a popular houseplant because it doesn't require much care, such as water or fertilizer. It does, however, need light to thrive. As it grows taller, shade may be necessary so that the leaves don't become too large.