Most, a good 80%, of the Blueberry seedlings I've sprouted show deformities such as variegated leaves & stunted growth ranging from moderate to severe. I know that comes with the territory when dealing with blue strains and especially DJ Short's famous Blueberry. I feel like I should pull them as they're hopeless, but I keep them b/c if I pulled the ones that were deformed it would leave me with only 2 plants at the most. I've heard that it can take a few tries with several packets of seeds to get a good blueberry mother. As of now, that is the strain that is most in danger of not producing a viable mother plant.

Examples of the deformed leaves:


All the blueberries together: