When mine did that, when I thought they looked large enough, I snipped
the runner line and planted them like everything else.. Eventually, they
grew too big so I pulled them and traded them to my LFS..

350X_Rider wrote:
What do I do with the branch like runners my swords are putting out? They
look like you could just lay them down, bury them and they'd grow another
plant... some are getting to be 3" in height now....

Not the actual sword leaves, but the "runners" they send out toward the
light? What do you do with them?