Looks like just old leaves. I have several different gingers in the ground and they tend to do that as well. Gingers do need a lot of water and they do come and go with the seasons.

Hi

Isn't that a winter dormant type?? If so it will drop down until next spring. I love gingers except for that problem so I keep them in pots and move them out of the grow area while dormant. They should receive a lot less water during that time anyway There are some that are evergreen alpinia for example they grow year around in fact often look bettter during winter .

gary

I agree Gary, it looks like it is winter dormant. The dryer weather may be helping it to lose leaves faster...

Hi

My siamese tulips and peacocks look like they were hit by a blow torch lol. have never figured what the trigger is, Obviously not temps nor lack of water but when they go dormant it's very rapid .Not to worry as they will return. gary