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Sunday, June 1, 2025

Blueberries in Idaho - it's work...and worth it!

 Craving fresh blueberries? It is possible to grow them here in Idaho.
 
Here's how:

  • Blueberries are compact flowering bushes that bear round bluish fruit.
  • They require full sun and only like moist acidic soil. Soils in Southwestern Idaho are commonly alkaline, so you must  use an acidic planting mix. 
  • They can be planted in a landscape with amended soil or also successfully grown in a container. 
Pruning, Maintenance and Fertilizer
Blueberries require little pruning; however, maintenance is required in terms of fertilization and sulfur. You’ll need to be patient.  For the first year you’ll need to strip off all the blossoms so the plant can use its energy to grow strong healthy canes for increased production. 

If planting in a container, you’ll need to monitor water closely because pots dry out quickly. Blueberries like moist well drained soil but not soggy conditions.  Mulching will help keep the soil moist and limit the growth of weeds.  After the first 2 springs, you’ll want to prune off older canes to encourage new growth and fertilize with an alkalizing fertilizer (21-0-0)

Which variety to choose?
There are many recommended cultivars which will grow in Idaho.
Depending on bloom time,
hardiness and height, make your choice from two different cultivars to insure pollination.
Whether you chose to grow a Northern Highbush, Southern Highbush, Rabbiteye, Lowbush
or Half-High, your plant will produce more and larger berries when cross pollinated.
There is still time to get your blueberry plants from your favorite local nursery

Quick tips and things you'll need:
Acid Loving Potting Mix
Soil Sulfur
Ammonium Sulfate 
Acid Plant Fertilizer
Bird Netting (the birds like blueberries as much as humans)
Plant in full sun
Protect with bird netting
Choose two different cultivars for cross pollination
Replace native Idaho soil with acid loving planting mix
Fertilize with 21-0-0
Fertilize with soil sulfur
Remove blossoms 1st year and additional canes 1st two springs
    Blueberry Syrup Recipe
    2 cups fresh blueberries                            
    ¼ cup raw stevia or equivalent                                  
    ½ cup water                                             
    2 teaspoons cornstarch
    1 teaspoon lemon juice
    1 tablespoon creme de cassis (optional)
    Place Blueberries in a sauce pan on the stove.  Mix water and cornstarch together until dissolved add to blueberries.  Cook over medium heat until berries start to pop.  Use the back of a spoon to mash the berries and boil 1 minute.  Add the stevia, lemon juice and Crème de Cassis.  Store unused portion in refrigerator for up to about a week.  This sauce can also be added to plain yogurt or ice cream.