| Hi. I don't know anything about growing palms in Minnesota, but I will try to answer your questions as best I can. About the 1 ft and 4 ft palms -- are the pots sized proportionately? If not, maybe the taller palm needs a larger pot? The greenish-yellow fronds on the taller palm may be reaching the normal end of their life cycle. How old are they? If you are doing well with your majesty but having trouble with the Washingtonia, I suspect overwatering -- majesties love water, while washies live in dry areas and do not like wet feet, and too much water can cause leaves to yellow and die. If the roots of a palm are growing out the holes in the bottom of the pot, it is probably ready for a larger pot. To be sure, slip the rootball out of the pot and look at it. I can't say how much these palms will grow in Minnesota, and the speed of the frond production will vary with conditions. Placed in all-day sun, they are quite fast. Hope that was at least a little helpful. | 
