Growing fast

The fastest-growing things I've ever watched regularly are the soaptree yuccas around our house.  One day there's nothing, then there's the beginning of a stalk, then there's a towering stalk, in virtually no time.

We spotted two stalks growing from a plant that has never had stalks before, and I decided to keep track of them.  Here are two pictures the same plant.  The first was taken on May 14, the second today, May 26.

For reference, the tips of the highest leaves are about waist high on me.  The stalks, today, are taller than me by several inches.  That means they've grown nearly three feet in 12 days.  And they're still going.