Organic Spray Guide for Blueberry Farms

The following Organic Spray Guide is a recommendation only and we are not held liable if you follow it and your plants do not thrive. It is currently the schedule we try to follow and have had good results, so we wanted to share!

Keep in mind, when spraying it is best to spray early in the morning, or late in the evening so that the blueberry plant leaves do not get burned. Also they can’t take in the nutrients as well when it is mid day. We hope this spray guide will help you as you raise your blueberry plants organically.

We often are trying new things, but as of 2022 this is our current organic Fertilizing/Fungicide/Insecticide schedule. Most of these products can be found at  with the exception of Tritek and Sporequell. We also try to keep these organic products on hand for selling at our nursery for other farmers. Please call us or email us at for availability.


In Late February we have started using a dormant oil called Pure Spray Green. *It is important to use this at least two weeks before you put your Berry Mix Granular application down. It is not good to mix Pure Spray Green with Sulfur. As always look to the label for directions. We like this dormant spray as it is much less likely to affect bees during a dormant time. We have found this useful against Aphids and other pests as it kills them at the larvae stage.


When leaves begin to sprout in March we apply Berry Mix Granular around the base of each plant.  We generally put 4-6 ounces per bush.

When leaves begin to sprout we also begin spraying Fungicide and Liquid Fertilizer.

We rotate each week using the following Fungicides: RegaliaSporeQuell, and Stargus. When spraying Regalia and Stargus we mix our liquid Fertilizer. However, we have found it best not to mix SporeQuell with your fertilizer when you spray that product. We always look to the label of each of these products when trying to find out how many ounces per gallon of water they require for treatment.

The Fertilizers we like to use include Liquid #3Worm Castings, and Alfalfa meal.

Since we have bees we generally don’t like to use insecticides. We incorporate Tritek at least once a month so that we don’t have aphid and other harmful pests bother the blueberry bushes.


We continue our weekly Fungicide and Fertilizer rotation. We also continue our monthly Tritek spraying.

During heavy berry loads it can be good to use sulfate of potash to help reduce stress on the blueberry bushes.

After the berries have all fallen we apply a granular application of Holycare in August. We again use about 6 ounces per plant.


As things begin start heading towards dormancy we discontinue our Fertilizer, Fungicide, and Insecticide sprays around the end of September.

We are not held liable if your plants still do not survive, or if they do not thrive when using this organic spray guide.  It is important to always use the ratios recommended on the container that the fertilizer, insecticide, or fungicide that you have. Many of these products we try to keep in supply so that if other farmers need them we can have them available, or ship them to you.

Please let us know if we can help you with that! For one acre the granular fertilizers are about $550 per acre per year and the foliar sprays are about $350 per acre per year. So under this organic schedule you can expect to pay around $900 dollars a year.

There are always new things we are trying so we will try to keep you updated as we find new products that work great with blueberry plants.

Shopping Cart