I've discovered that cut Angelonia stems take root easily in water.
Now is the time to start taking snips of any ground plants that aren't true annuals that one might want to try to save, for those farther north, and approaching soon for those of us farther south.
I've learned over the years to not wait for "panic night" - when 1st frost is expected - to cut stems of Coleus to save. They do not take root as easily if they have had some chilly nights too close to freezing.
