You cannot splice this item. STARSEED is in terrain category. This seed grows fast, just in few minutes. Received experience is a mystery. Keep an eye out for the exp counter. It takes some effort to brake STARSEED. Seed mathematics is very complicated, but you should get at least 1 seed back from splicing STARSEED. Profiting with this might be questionable. Blockratio of STARSEED is a mystery. Maybe you can check the wiki for <a href="https://growtopia.fandom.com/wiki/Starseed">starseed</a>