The #1 Best Fertilizer For Blueberry Plants

It isn’t easy to name the best fertilizer for blueberry plants, but a few have the nutrients these fruity bushes need to thrive. 

Growing blueberries require some skill. If you have the right fertilizer, you’ll be one step ahead. In this article, I share which type of fertilizer works well for blueberries and list the five best ones you can buy. 

Which Fertilizer Is Best For Blueberries?

Using fertilizers is an effective way to keep your blueberries healthy. Choosing between organic and synthetic fertilizers can be tricky, but luckily, both work great. 

One might work best for your garden, while another is better suited for a different type of gardener. Blueberries thrive in acidic environments, and since organic fertilizers are often better at adding this to the soil, they are considered best for blueberries. 

Which Fertilizer Is Best For Blueberries

Organic Fertilizer For Blueberry Plants – Best Fertilizer For Blueberry Plants

Organic fertilizers are made from natural, renewable materials. It contains no artificial chemicals, and it’s unlikely that you’ll find any pesticides or herbicides in them. 

If you use organic fertilizing methods, you’ll add a healthy microbial community to your soil. Organic fertilizers include potash, kelp meal, and fishbone. These help produce high quantities of nitrogen that lead to lower PH values. 

Organic fertilizers aren’t harmful to blueberry roots and slowly release nutrients for longer-lasting effects. If you’re making your own organic fertilizers, you’ll have to wait a while for them to be ready for use. 

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Synthetic Fertilizer For Blueberry Plants

Synthetic fertilizers are readily available. Most are quick-acting, but you can get slow-release ones too. They don’t have an odor as potent as organic fertilizers but contain artificial chemicals. 

Heavy rainfall or overwatering can wash your synthetic fertilizers away. Keeping your blueberries in a pot is recommended if you’re using these. 

What Is A Natural Fertilizer For Blueberries?

The most popular natural fertilizer for blueberries is fish or blood meal. Both add sufficient nitrogen to the soil to promote healthy blueberry growth. 

If your soil needs more acidity, you can add sphagnum peat or ground coffee beans. Bone meal and powdered seaweed fertilizers will provide your blueberry plant roots with potassium and phosphorus. 

Down to Earth Blood Meal Fertilizer Mix 12-0-0, 5 lb

The Best Organic Fertilizer For Blueberries

While many organic fertilizers can provide your blueberry plants with the nutrients they need for healthy growth, blood and fish meal is the best. Both are excellent sources of nitrogen and lower the acidity of soil.

If you want to use blood or fish meal on your plants, you’ll have to cover their roots with 1/4 cup of it. You should use your fingertips to carefully scrape the powder onto the roots without disrupting them. Remember to thoroughly water your plants afterward. 

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The Best Fertilizer For Blueberries In Pots

Blueberries grown in pots have the same needs as those planted directly in the ground. However, some fertilizer works better for containers. One of the best fertilizers for blueberries in pots is cottonseed meal. 

Cottonseed meal is rich in nitrogen and an excellent pH-lowering agent. You should spread 1 cup of cottonseed meal in a 12-inch wide ring around your blueberry plants. Keep the meal separated from your plants by about 6 inches from the stem. 

Distribute the cottonseed meal as evenly as possible to ensure all the plant roots get some. 

The #1 Best Fertilizer For Blueberry Plants

#5 Acid-Mix Fertilizer For Blueberry Plants

Cottonseed meal, fish bone meal, kelp meal, and humic acids are the most common ingredients in an acid-mix fertilizer. These create a good low pH balance. 

Acid-mix fertilizer also contains a lot of potassium which promotes fruit development, while the nitrogen in it helps blueberry roots thrive. 

You should apply these fertilizers 3 times annually: in the early spring season as the first blossoms appear, between spring and autumn, and then again in autumn following the harvest.

#4 Water Soluble Fertilizer For Blueberry Plants

Water soluble fertilizers are synthetic but ideal for blueberry plants requiring immediate nutrient doses. These have a substantially larger macronutrient ratio than other fertilizers. 

You should mix 1 tablespoon of fertilizer with 1 gallon of water and pour it over your blueberry plant. This solution will inject your soil with a high dose of macro- and micronutrients. 

#3 Compost Manure Fertilizer For Blueberry Plants

Composted animal manure will feed good bacteria to the soil around your blueberry plants and promote healthy root growth. It increases the overall nutritional value and ensures plants thrive.

Manure is strong, so mixing one part with three parts of soil is best. Only top-dress the soil with composted animal manure fertilizer and thoroughly water. 

#2 Ammonium Sulfate Fertilizer For Blueberry Plants

Fertilizers containing ammonium sulfate is popular for use on blueberry plants. They’re great at maintaining an acidic soil ph! Your soil’s natural pH levels will determine how much of it you need. Typically, 2 to 4 ounces per bush is enough per year to keep the pH between 4.5 and 5.1which is perfect for growing blueberries. 

#1 Potassium Fertilizers For Blueberry Plants 

Potassium-rich fertilizers help blueberry plants thrive. Most types are organic and made from potash – a naturally occurring material created when wood burns. It can also be found in mines and the ocean. 

When blueberry plants are short on potassium, the tips of their stems die. Other signs of low potassium levels include burning edges, cupping and curving, and necrotic patches on their leaves. 

Potassium plays a vital role in the growth of your blueberry bush by helping it produce more crops. It also regulates water intake. 

Potassium Fertilizers For Blueberry Plants 

Summary – Best Fertilizer For Blueberry Plants

So, what is the best fertilizer for blueberries? Remember that fertilizing your blueberry bushes at the right time is just as important as choosing the best fertilizer. Whether you go for a synthetic or organic one, you need to apply the correct dose at the right time. 

Fertilizers can be tricky, especially when growing something that needs acidic soil. Look for something with nitrogen and potassium to keep the pH levels in your soil low. 

I hope this article was helpful! If you have more questions, ask them in the comments.