Is it healthy for pine trees to be too near blueberry bushes. Do they cause the soil to be too acidic?
No, pine trees won't cause the soil to be too acidic for blueberries. In fact, the presence of pine trees is an indicator that your soil might be very good for blueberries. There are many pine trees bordering our 2-acre blueberry field, which is still thriving and productive after 30 years.
But you do need to be concerned about the trees being too close to your blueberries for another reason: shade. To be most productive, blueberry plants need full sun. They'll tolerate a certain amount of shade. But if they're not in full sun (or nearly so), fruit production will be significantly impacted.