Q.meyer lemon tree problem
Tree lost all its leaves due to cold winter–yes we protected it–has many new leaves but no blossoms this year. Now it is getting stems with very large leaves, much larger than normal, and large thorns on it. Also has two groups of blossoms, does not look like usual ones. Tree is about 5 years old and has done very well until now. Should we prune it?
Cold weather can have some strange effects on plants, and it can take 2 or 3 years for everything to get back to normal. You can certainly do some pruning on your tree. This article has some general information: https://www.gardeningknowhow.com/edible/fruits/lemons/growing-meyer-lemons.htm