Keeping Boxwoods Small . It's another thing called boxwood leafminer. Boxes need moderate amounts of water but be careful not to overwater. Formal Garden Plants New Boxwood in the Backyard from kristywicks.com With a smaller overall stature as well as smaller leaves than the common species, you’ll see a few variants of this type, and breeders may choose to write these on plant labels in. If you neglect this job for multiple. Microphylla (japanese box).boxwoods are typically large shrubs or small trees, but most of the varieties used in modern landscaping are.