You must have PASTEL BLUE BLOCK and MAGIC EGG to make PASTEL BLUE FLOWER BLOCK. PASTEL BLUE FLOWER BLOCK is in color blocks category. Better plant this and come back later, it takes some time. PASTEL BLUE FLOWER BLOCK gives experience points when broken. PASTEL BLUE FLOWER BLOCK can be broken. You get at least 1 seed back (maybe more!) from splicing PASTEL BLUE FLOWER BLOCK. Profiting with this might be questionable. Blockratio of PASTEL BLUE FLOWER BLOCK is a mystery. Maybe you can check the wiki for <a href="https://growtopia.fandom.com/wiki/Pastel_Blue_Flower_Block">pastel blue flower block</a>