The Scarlet Fire dogwood is both deer-resistant and resistant to several common diseases found among dogwoods. Most Kousa dogwoods are not particularly attractive to deer. That said, young trees of any variety will be of interest to hungry deer, especially when they're still tender and green. Until your tree becomes established, keep it safe using a deer-proof fence. Allow it to grow and develop a hard outer bark before leaving your dogwood to fend for itself.