The recipe for this currently requires:

1x Emeradic_Crystal
1x Tall Grass (Called "grass" in-game)
1x Lime Dye
1x Oak Sapling
1x Slimeball

This is a mistake, as Tall Grass is exceedingly hard to obtain in Minecraft Vanilla, and is likely intended to be Short Grass. The intended recipe should be:

1x Emeradic_Crystal
1x Short_Grass
1x Lime Dye
1x Oak Sapling
1x Slimeball

Thank you!