I live in Chicago (cold weather of course) and inside my home I have both two sago palms, about a foot tall and the other is about 4 inches. Now on the little one, the leaves are real hard and they're turning yellow, but the pot seems to be small. Will replanting it with new soil and bigger pot help? And my lovely Madagascar palm (it's my favorite) is about 36 inches tall and I just bought it. When cold weather came, all of the leaves got hard (toast like) and eventually fell. I decided to just cut the rest of them off. I hope I did not kill it. What's the best food and nutrients for both these plants to use?