Allow is a synonym of Appropriate. Appropriate is similar to Proper. 
you are likely to find Tree in/at/on Backyard. Backyard can be used for Garden. Garden is related to Grow. Grow is related to Expand. 
Allow <--Synonym--> Appropriate <--SimilarTo--> Proper 
Tree --AtLocation--> Backyard --UsedFor--> Garden <--RelatedTo--> Grow <--RelatedTo--> Expand 