If it freezes, it can damage or even kill the cactus. Pingitore said it’s always better to be safe than sorry when protecting your plants from a freeze because it can be costly to replace them.

NYC's Cactus Store offers a wide range of unusual plants for sale, but their rarest is a Haageocereus tenuis, listed for sale on their website for $250,000.Gifted to the store's owners by a ...