Best Mulch For Blueberries: What You Need to Know!

Blueberries are one of the best plants for beginner gardeners. A blueberry bush was the first plant in my garden! The bush was surviving but not thriving… I noticed a huge change when I started mulching them! So… what’s the best mulch for blueberries?

Mulch enriches the soil with vital nutrients and keeps your dirt moist. Blueberry plants prefer damp soil because it promotes rapid root growth. If you don’t use mulch in your garden, you might notice that your blueberries dry out quicker! 

Don’t know what kind of mulch to buy? I use these cost-effective cedar shavings!

A healthy blueberry bush

What Are The Best Mulches For Blueberry Plants? 

Grass Clippings 

Grass clippings retain a lot of moisture and, more importantly, shield the soil from the sun. This makes them an excellent mulch for blueberries. Additionally, since grass clippings degrade so quickly, your plants can use the nutrients much faster than other types of mulch. If you decide to use glass clippings, I recommend spreading them over your blueberry plants without touching the plant stems—cover 2 to five inches. 


Hay is an excellent mulch for blueberry plants as well. Its high concentration of vital nutrients accounts for how well it serves this purpose. In general, you can use either regular hay or some that have already started to decompose. Make sure the hay doesn’t touch the blueberry plants’ stems when you surround them. I recommend watering the hay to speed up the decomposition process and stop the wind from sweeping it away.

Wood Mulch 

Wood chips are a commonly utilized mulch for blueberry plants. However, they have a slow decomposition process. If your blueberry plants are newly planted, I recommend using something that degrades quicker, such as compost, hay, or newspaper!

On the other side of things, wood chip mulch is fantastic at weed control. It will also last significantly longer than other mulches. Put a layer of mulch over your blueberry plants, keeping it 2 to 4 inches away from the stem of the plant. Remember that blueberry plants don’t like water on their leaves.

Wondering what mulch will last the longest? Find out here!

Wood chip mulch

Plastic Mulch 

Many people who grow blueberries often use plastic mulch, even though it is likely the worst mulch. The disadvantages of plastic mulch include soil drying, poor nutrient retention, and a lack of critical nutrient additions. Plastic mulch is excellent for preventing weeds from growing around your blueberry plants, yet your blueberry plants may also suffer.

Plastic mulch’s high heat absorption will retain heat at the soil’s surface, speeding up water evaporation and causing the ground to dry. Any plastic mulch you use for blueberry plants should be placed on top of an organic layer of mulch, such as compost.

Rubber Mulch 

Rubber mulch is another popular man-made alternative to natural mulch. It is similar to plastic mulch regarding its poor nutrient retention. I don’t recommend using it for blueberry plants that are newly planted.

If you’re going to use rubber mulch, I recommend Playsafer rubber mulch. It’s high-quality and built to last.


Cardboard is a fantastic mulch for blueberry plants because it is made of wood pulp. The primary difference between wood chips and cardboard is that cardboard decomposes quicker. Therefore, cardboard is better for newer plants and wood chips are best for older blueberries.

To place cardboard mulch, spread a layer of 2 to 5 inches of shredded or substantial cardboard, carefully wetting the mulch thoroughly.


Newspaper can be used as mulch for blueberries. The biggest problem with using newspaper as mulch is the ink, which may include dangerous compounds. I recommend checking to make sure what type of chemicals are used in the newspaper before using it as mulch.

Newspaper mulch degrades very quickly. I recommend using cardboard mulch as opposed to newspaper. If you do want to use newspaper mulch, though, add a 2 to 5-inch layer of newspaper around your blueberries. Applying organic mulch in addition to the newspaper mulch is also an excellent option because it will add more nutrients to your plants.

Pine Needles 

Pine needles disintegrate more slowly than grass mulch and can be utilized as a mulch on blueberries. Using pine needle mulch can increase soil acidity, but it won’t harm your blueberry plants. Pine needles stop acidifying the soil once they become brown, and as they disintegrate, they add helpful nutrients to the soil.

As you mulch your blueberry plants with pine needles ensure the blueberry plant stem is not in direct contact with the needles. Pine needle mulch can also be mixed with cardboard, grass, hay, wood chips, and other substances.


Because they are nutrient-rich and have a high water absorption rate, leaves are excellent mulch for blueberry plants. Furthermore, leaves typically decompose quite quickly. They will feed the soil where your blueberry plants are growing. When you spread 2 to 5 inches of mulched leaves around your blueberry plants, make sure that none of them touch the plant’s stem. After that, water the area.


Given that it contains all the nutrients that blueberries need, compost is a fantastic option for mulching blueberry plants. Compost also tends to break down relatively quickly, speeding up the growth of your blueberry plants.

If you are composting your kitchen trash, you shouldn’t use it as mulch because it will start to attract pests (unless you let it decompose for a long time). Make sure the plant stem is not directly in contact with the compost.

How to Mulch Your Blueberry Plant: 

Mulch should cover a 4-foot strip of soil 4 to 6 inches in the middle of a row of blueberry plants. Mulch needs to be replaced as it deteriorates. Degrading mulch enriches the soil with organic materials and fosters the growth of roots. If mulch is not replaced as it decomposes, vigorous root development may result in root exposure. As long as the mulch is replaced as needed, the advantages of mulching endure.

You can mulch a single plant if you don’t have multiple. Shovel the mulch around your plant (be careful not to put mulch directly in contact with the stem). Ideally, the mulch should be about 5 inches deep and about a foot wide. 

Final Thoughts 

As you can see, mulching blueberries is easy; just be cautious while picking the right kind. If you apply an organic mulch that nourishes the soil and aids in water retention, your blueberry plants will develop strongly and healthily.

Are you looking for additional information on organic gardening? We provide a collection of free resources.

Best Mulch for Blueberries

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