Where is the best place to plant a snowball bush?

These bushes do the best when planted on the northern most side of the home. They also love sunlight. We had three planted on the northern side of our home and an 80 foot oak shaded the three in a gradutated way. The one closest to the outer edge of the shade grew larger then the other two then the next grew larger than the third. The 80 foot oak was taken out due to a sewer line issue and within two growing seasons the small inner most planted bush had grown to the same size as the other two. It was amazing watching this!