Hi there, This is my first year growing gladiolas and I'm unsure how to care for them now with the colder weather setting in. Most still have green leaves - do I leave them intact until they brown, or should I clip them? Should I dig up the bulbs? If so, how do I store them and when is the best time to replant. Thanks,
Corms are ready to dig in four to six weeks after blooms are finished or when the tops die off. The corms can be dug anytime before a hard freeze. Healthy plants should be left in the soil as long as possible so there is ample time for maximum development of the corms.
See the attached link on curing, cleaning, and storing the bulbs http://extension.missouri.edu/p/g6620