Leaf Blade is my favorite and imo the best physical grass move because it is strong and has no drawbacks [only a higher critical hit chance].
Seed Bomb is pretty standard and usually is what physical grass types have to stick with since Leaf Blade, Power Whip, and Wood Hammer are relatively rare.
On the special attacking side I usually pick Grass Knot however Energy Ball is not bad of course.
If this was the 5th generation my answer would for sure be Giga Drain because it is just a tad weaker than Energy Ball and the recover is always nice. Shame it only had 60 BP for the 4th generation.
