i bought a couple of big yukka/spider type plants 6 months ago, dont have the name for them ( marginata ) maybe. they were going fine, watered only when soil was really dry.
went away for a month, came back and they are both dying. lack of water maybe ? soil was very very bone dry. so ive now watered them this last 2 days.
hopefully they will spring back.
I have a couple of Dracenas...they do periodically drop leaves.
Water until the water comes out of the pot... OR...put them into a bowl of water for an hour or two,and let them "drink" the amount they need.