A hefeweizen is a wheat beer, and it likely will have clove or banana flavors. A blonde is not the same.
You should find a recipe for a blonde ale. After primary fermentation is done, you would add strawberry puree (preferably pasturized) to a secondary and rack the beer on it for as long as it takes to get to the amount of fruit flavor you desire. Then bottle.
You might want to take a look at some of the other fruit-driven beers (raspberry or cherry wheat, other fruit blondes) to get an idea of the process.