I paid a lot of attention to those words because I already had a big — make that a giant interest in growing these ...

The pencil cactus, otherwise known as a 'milk bush' or euphorbia tirucalli, is a variety of cacti known for its signature, vertical pencil-like branches that grow in a candelabra pattern.

For example, if you head to the store right now you might just walk out with a gorgeous pink euphorbia plant for just $7.99.