Fertilizing your blueberries organically seems to now be an option made easy by our big box retailers like Home Depot!
SO here is our process at Blue Harvest:
Spring fertilization: Nitrogen, Nitrogen, Nitrogen
We apply 13-0-0 to our plants in late February to early March as food for the flush of leaf growth to come in Spring. Because we are promoting new growth for next years crop, I want to give them a big push with plenty of N of the N-P-K, hence the 13-0-0, concentrated N application.
The P-K (Phosphorus(P) and Potassium (K)) is applied at our farm via the compost applied in the fall feeding application, so I spend the money on just what is needed in early spring. Though many conventional farms use a 13-13-13 when they apply fertilizer, so its not wrong, I’ve just tweaked the norm (a better use of $$). Organic fertilizer is considerably more expensive than conventional fertilizers, so I’ve got to be smart with inputs.
The good news for you home gamers is that Home Depot seems to have more organic fertilizers than conventional. I’ve included a few pics of what I saw and would recommend that you go that route -with a lot fewer plants the $$ are not as big!
WHEN AND HOW MUCH —As for timing, we get ours out early (FEB/MAR)-the organic fertilizer that we use is released over a 4 – 6 week period, and needs rain to breakdown and begin working. If you are applying an immediate release, you can wait a little longer. As for how much, for my mature plants the goal is about 3/4 to 1lb per plant. For your younger plants you can drop it down accordingly.
pH is also a very important component when feeding your plants. If the pH is not low enough (acidic – 5.2-5.6) your plants will struggle to eat the food you give them. Think of the right pH as a set of teeth, without teeth, you will struggle to eat, the same holds true for plants- without the right pH they will struggle to eat and GROW. I’ve included a pic of a soil acidifier that is also at Home Depot.
Hope that helps! Be sure to add yourself to our email list so you don’t miss the open announcement in May — (see the box on the right on the top of this page)