if its only 2 or 3 days' or even a week you should be able to soak the em so they will be fine when you get back. I foregt if you were in soil but if you are they dont mind so much if they go low on h2o as long as they get some when you come back. they should perk right back up and never skip a beat any longer then that if your in soil you can get one of those water balls they sell at the garden center. that should give you the back up you need happy to hear about the new groth