If you gain them faster than you use them, and they also don't take up any inventory I have zero clue why you're even griping about them. Are you just looking for something to complain about?

If you don't need those shards/crystals/clusters send them over to me. I go to the MB 2-3 times a week to buy crystals by the thousands. My gardens are used for shards when they are needed, when I could be growing more valuable crops. Clusters are the only ones I have in abundance because gathering mats for masterbook recipes is very time consuming.