How to Grow Blueberries in Sawdust

Plant blueberries in sites that receive eight hours of full sun every day and quick drainage after rain. Give each blueberry bush at least 3 feet of space for growing, but plant blueberries within 20 feet of each other to ensure pollination during the bloom.

Prepare a site that is 18 inches long by 18 inches wide, and 18 inches deep, for each blueberry plant. Dig the soil up and mix it with 9 inches of organic compost, then mix in another 2 to 3 inches of sawdust. This provides a rich and acidic foundation for the blueberries, and ensures good drainage around the plant's roots.

Plant blueberries in holes that are as deep and twice as wide as their existing root ball. Spread the roots in the hole as much as you can, then pack amended soil in around them for support.

Mulch blueberries with 3 to 4 inches of sawdust and wood chips, in a 2-foot-diameter circle around the base of each plant. The mulch will protect blueberries from growing too cold or drying out, while discouraging weed growth. As this sawdust and wood mulch breaks down, it will add more acidic nutrition to the soil. Replenish the mulch layer once a month with fresh sawdust.

Water blueberries with at least 2 inches of water every week. Water by hand to supplement natural rainfall in rainy seasons.