邻居立栅栏圈起来把你挡在外面，才是抢占。仅仅种花种草，那是白给你的。

To successfully claim ownership of land through adverse possession, a person must prove that their possession of the property was actual, exclusive, open and notorious, hostile, and continuous for the statutory period. These elements are generally required by most jurisdictions, though specific details may vary by state. 

只种花草，不满足上面的exclusive use的要求，只有立栅栏才满足。