There is a grape vine growing all over the porch at my father's house. I see it has just come into bloom and the clusters of tiny flowers are already suggestive of the bunches of grapes that will follow.
 The wild ancestors of Vitis vinifera were climbers and scramblers through trees and valleys in Asia and the Mediterranean. This one has reverted to type.
 It produces a fairly decent crop most years and when the summers are hot and long the grapes are fine to eat though small and sharply acidic.

CORRECTION: There is indeed a grape vine on the roof of the porch. But the flowers in the photo belong to another plant altogether. See my subsequent entry dated 9th. April.