Make no mistake about it, blueberry plants want what Colorado’s soils can’t deliver – high acidity. Attempts to grow them in our alkaline soil will frustrate the most accomplished gardener. However, research at Colorado State University found the plants can be grown successfully in this region when planted directly into a bale of peat moss, which has been tucked into the garden bed. The process is described in detail here.
Five years ago, armed with bales of peat, solid research and determination, Denver Master Gardener Jill Fielder decided to add blueberries to her raised beds. Given the proper environment, regular care and careful plant selection, she’s been enjoying berries every summer since.
According to Jill, “Blueberries are both insect and wind pollinated and the bees love ours. Most experts believe that blueberries set great yields when there’s cross pollination with another variety that flowers at the same time, so we have a couple different cultivars.” Northcountry Blue (small, flavorful berries, upright habit), Bluegold, (productive with a somewhat sprawling habit) and Bluecrop (large berries, the newest addition) are 3.5′ to 4.5′ feet tall and doing well. Northblue didn’t produce well and was replaced.
Plants were purchased on-line from reputable growers and were planted in the spring. The plants are feed monthly during the growing season with a water soluble fertilizer for acid-loving plants. A drip irrigation system provides moisture.
Jill’s raised beds are in a protected area of her yard, bordered by a fence and garage so she has not covered or wrapped the plants in the winter. However, winter protection is recommended in less protected areas. Late in the winter, plants are trimmed to remove dead or damaged wood and maintain shape.
If you’re looking for a new gardening challenge and can commit to the specific needs of these plants, why not give them a try?
Posted by Linda McDonnell, a Denver Master Gardener, with thanks to Jill Fielder for supplying inspiration and photos.