Gardening
This issue's seed is the new Sword Fern! It is dropped by Shadow Ghost Dog and also can be bought in the crowns shop with 1,500 crowns. It can give you all the school blades, along with elemental blade and spirit blade, and even sharpened blade as treasure cards, but sadly not balanceblade. Being a more olden-time plant with its sword it likes the sword tree housing item, but it does not like the missile toe.
Find out more about the Sword Fern here!