The eighth and final gym leader who specializes in grass types
SUNFLORA: Grass Knot, Vine Whip, Protect, Body Slam
JUMPLUFF: Grass Knot, Sleep Powder, Bounce, Energy Ball
GROTLE: Grass Knot, Dig, Energy Ball, Rock Climb
GROVYLE: Grass Knot, Leaf Blade, Protect, Night Slash
TORTERRA: Grass Knot, Crunch, Earthquake, Frenzy Plant
When you meet him after beating Lex he gives you the hm Rock Climb. After beating him he gives you the tm Grass Knot.