They will need at least 6 hours full sun. The white pines would have nothing to do with their up take of nutrients. The shade would be a major factor. Also the soil Ph would be a factor. A Ph close to 5 would works best. Use peat moss worked in around the plants. Blueberries also need a regular water supply to do well. Without water or a low moisture level no photosynthesis takes place. Also photosynthesis is very low when the plants are shaded. All the fertilizer in the world will not help these conditions. Just on a few plants azalea miracle gro plant food will help bring the Ph down.
They will need at least 6 hours full sun. The white pines would have nothing to do with their up take of nutrients. The shade would be a major factor. Also the soil Ph would be a factor. A Ph close to 5 would works best. Use peat moss worked in around the plants. Blueberries also need a regular water supply to do well. Without water or a low moisture level no photosynthesis takes place. Also photosynthesis is very low when the plants are shaded. All the fertilizer in the world will not help these conditions. Just on a few plants azalea miracle gro plant food will help bring the Ph down.