East of the National Forest.
go to goldenrod city get the squirtbottle spray it on the wiggly tree and you battle sudwoodo
The wiggly tree is actually Sudowoodo. You need to get the badge in Goldenrod City. Then you go to the Flower Shop (next to the gym) and get squirtbottle. Use the squirtbottle on Sudowoodo and it will attack you. Defeat it or catch it and you will be able to get past.
water it with a spray can, its a sudowoodo. you can battle and catch it too, because that is the only one you will find in that game
you get a water thingy and you use it on the tree
Sudowoodo does not evolve. That is its final evolution.
It's a sudowoodo
Sudowoodo can learn it just lvl up
a rock Pokemon disguised as a tree
get the squirt bottle and use it on the wiggling tree aka sudowoodo
you get the squirtbottle at the flower shop and water the tree(which is Sudowoodo)
in route 36 after you have defeted or captured sudowoodo
in route 36 theres a tree get the squirtbottle after defeating Whitney in the flower shop next to the gym pour it on the odd tree and there you go theres the lv 20 sudowoodo