SummerPerson~
I'd like to add that with the H. cybister hybrids (like 'Chico') I find that they will naturally go completely dormant at the season's end and I advise you to keep them totally dry. They will easily rot, especially at cool temperatures.
It is advisable to wait for the growth to start before watering. Chico for one, is slow to start up, so just be patient. If you apply water too soon, they can rot.
R.