Lying on the groundLoose item spots pick one item from their area's list each time they fill, and Grass Skill Fruit: Solar Blast is on these lists. Chance per spot:The desert0.04%429 spotsThe snowy mountains0.04%162 spotsThe volcano0.03%219 spotsShow the spots on the map
Find it on the mapEvery spot from the game files. Open the map to see them all.Skill fruit treesMore are found inside dungeons (4 spots for Skill fruit trees). Dungeons are underground, so those spots aren't on the surface map: go in through a cave entrance or a Sealed Realm.Dungeon entrances
Open your Pal box or party, pick a Pal, choose “Use item” and feed it the fruit to teach that move. Any Pal can learn it.