[header] How to grow a ficus benjamina [title] Select a healthy sprig for cutting. [step] The easiest way to grow a new ficus is with a cutting from an established plant. The best cutting will be a small sprig that's at least 6 inches (15 cm) long, and with a few leaves on it. 
You don't want the sprig to be a brand new shoot, but it also shouldn't be too old either. Look for a sprig with no damage and healthy, green leaves.