Potion - You'll see this immediately upon entering the area.
Potion - From the Potion, head west. Turn north at the kid in the blue shirt to see it.
Antidote - This is just west of the same kid.
Pokéball - After battling the first Lass, keep heading south. Turn east at the fork to find an item past the second Lass.
Potion - This lies in the opposite direction of the Pokéball.
Revive - You'll find this just down the short stairs. Use Cut on the tree to reach it.
Super Potion - Head south from the stairs, and you'll spot this just over ledge past Schoolgirl Bridgett.
Super Potion - Found at the extreme northwest building of the town. Examine the flower bushes out front to find it.
Super Potion - In the hedges to the right when you first enter the area.
Great Ball - Found in the next set of hedges to the north.
Repel - Found in the hedges on the west side of the road.
Antidote - Found in the northwest hedge where Gardener Wheaton patrols.
Poison Barb - Found in the section past the fountain. Check the hedges in the middle of the area.
Net Ball - Found in the northwest corner of the area near Gardener Grover.
Ether - Found in the opposite corner of the area.