Discover the Benefits of Blueberries with MSU Extension


The MSU Extension Blueberries program is a full-circle test of blueberry production in Michigan. Following the lead of growers who wanted more information about blueberries, MSU Extension set out to provide answers to their questions. From the beginning, it was extremely important to test how blueberries behave in Michigan soils and climates.

Blueberries have a cool bush habit and a critical winter dormancy requirement. MSU Extension Blueberries program provides support to growers on how to select suitable blueberry cultivar types, plant blueberry plants, control blueberry diseases and pests, and prune blueberry canes. Growers can also find information about blueberry fertilizer requirements, weed control, mulched blueberry beds, removing damaged blueberry canopies, and bees around blueberry bushes.

According to James Williamson, an MSU Extension Blueberries expert, “Blueberry production is a complex process with many factors to consider. We work closely with growers to help them make the best selection from the several blueberry cultivars available in Michigan. Plus, we guide them on how to maintain the vigor of blueberry plants and ensure high growth in the spring.”

The MSU Extension Blueberries program begins in February, when growers start pruning their blueberry bushes. By the time the blueberries are ready to be harvested in July, MSU Extension has visited blueberry fields several times to provide guidance on blueberry plant care, weed control, and pest prevention. In the North, blueberry growers can start picking their blueberries as early as the beginning of July, while in the South harvesting can last until the end of July or even longer.

MSU Extension Blueberries program believes that a well-mulched blueberry bed, suitable blueberry cultivar selection, and proper blueberry plant care can lead to high-quality and delicious blueberries. Whether you are a northern, north-central, or southern blueberry grower, MSU Extension has the expertise to help you succeed in blueberry production. So, if you are a blueberry grower or just a blueberry lover, make sure to keep an eye on your inbox for all the blueberry information you need.

Blueberry Gardener’s Guide

Welcome to the Blueberry Gardener’s Guide, where you can find all the information you need to successfully grow and care for blueberry bushes. Blueberries are a delicious and nutritious fruit that can be enjoyed fresh, in baking, or in a variety of other culinary treats. Follow this guide to ensure a bountiful harvest of juicy and flavorful blueberries.

Choosing the Right Cultivar

When planting blueberries, it’s important to select a cultivar that is well-suited to your region. There are two main types of blueberries: northern highbush (Vaccinium corymbosum) and southern highbush (Vaccinium corymbosum hybrids). The southern highbush varieties are better suited to regions with mild winters, while the northern highbush varieties tolerate colder temperatures.

Consider factors such as flavor, fruit size, and harvesting season when choosing a cultivar. Some popular cultivars include ‘Bluecrop’, ‘Jersey’, ‘Olympia’, and ‘Duke’.

Site Selection and Preparation

Blueberries prefer acidic soil with a pH between 4.5 and 5.5. Choose a site with full sun and good drainage. Avoid areas where water tends to accumulate, as excessive moisture can be detrimental to blueberries.

Before planting, prepare the soil by removing any weeds or grass and incorporating organic matter such as compost or peat moss. Blueberries have shallow roots, so it’s important to keep the base of the plant free from competition.

Planting and Care

Plant blueberries in early spring, before new growth starts. Dig holes that are wide and deep enough to accommodate the root system of the plant. Space the plants about 4 to 6 feet apart in rows that are around 8 to 10 feet apart.

Water the plants regularly, especially during dry periods. Blueberries require an inch of water per week, either from rainfall or irrigation. Mulching around the base of the plants can help retain moisture and suppress weeds.

Blueberries are prone to bird damage, so consider protecting them with netting or using scare tactics to deter birds. Pruning is generally not required in the first year, but in subsequent years, remove any damaged or twiggy shoots to maintain a productive canopy.

Fertilization and Pest Control

Fertilize blueberries in early spring with a balanced fertilizer, following the instructions on the package. Avoid fertilizing too late in the season, as it can stimulate new growth that may not harden off before winter.

Monitor your blueberry bushes for pests and diseases, such as mites, aphids, or fungal infections. Follow integrated pest management practices to control these issues and maximize yield.

Harvesting and Storing

Blueberries are ripe when they turn blue and easily detach from the bush with a slight rubbing motion. Harvest the fruit by gently picking or twisting the berries from the plant. Store the blueberries in the refrigerator for up to a week, or freeze them for longer storage.

Thanks to this guide, you have all the information needed to start growing your own blueberries. With proper care and attention, you can enjoy a bountiful harvest of these delicious and nutritious berries year after year.

Site Requirements

When considering the cultivation of blueberries, it is important to choose the right site. Blueberries require specific conditions to thrive and produce a bountiful harvest. Here are some key factors to consider:

  • Soil: Blueberries prefer sandy or well-draining soils with a pH between 4.0 and 5.5. The soil should be rich in organic matter and have good moisture retention.
  • Sunlight: Blueberries need full sun to grow and produce the best fruit. A minimum of six hours of direct sunlight per day is recommended.
  • Water: Adequate water supply is critical, especially during the dry season and fruit ripening period. Blueberries require an average of 1-2 inches of water per week. Irrigation systems may be required to ensure proper watering.
  • Temperature: Blueberries thrive in cool climates, with the ideal temperature range being between 32°F and 77°F. They require a certain number of chill hours during the winter to promote proper fruiting.
  • Weed Control: Weeds can compete with blueberries for nutrients and water. Regular weed control measures, such as mulching and hand weeding, are necessary to maintain a healthy and productive blueberry bed.
  • Pollination: Blueberries are self-fertile, but they benefit from cross-pollination with other varieties. Planting multiple blueberry varieties with overlapping bloom times will increase fruit yield.
  • Plant Spacing: Blueberries should be spaced adequately to allow air circulation and light penetration. A spacing of 4-6 feet between plants and 8-12 feet between rows is recommended.
  • Pruning: Regular pruning is essential to maintain the health and vigor of blueberry bushes. Proper pruning helps maintain an open canopy, promotes fruitfulness, and reduces the risk of disease.
  • Fertilization: Blueberries have specific fertilizer requirements to promote healthy growth and fruit production. Expert advice and soil testing may be necessary to determine the right fertilizer regimen for your blueberries.
  • Pest and Disease Control: Blueberries can be susceptible to various pests and diseases. Regular monitoring and appropriate pest control measures are crucial to prevent damage and ensure high-quality berries.
  • Harvesting: Blueberries should be harvested when they are fully ripened, firm, and have a deep blue color. This generally occurs around 7-10 days after the berries turn blue. Gentle rubbing will easily remove ripe berries from the plant.
  • Winter Protection: In areas with harsh winter conditions, blueberries may require additional protection. Covering the plants with straw or burlap can help prevent cold injury and increase winter survival.

By following these site requirements and proper care guidelines, you can establish a productive blueberry plantation that yields high-quality berries.

Planting and Establishment

When it comes to planting blueberries, there are a few important factors to consider. First, it’s crucial to choose high-quality sources for your bushes. This will help ensure that you are starting with healthy plants that are less susceptible to diseases and pests.

The best time to plant blueberries is in the late fall or early spring. However, if you are in a colder region with severe winters, it may be better to plant in the early spring to avoid any damage to the young plants.

Blueberries need a suitable site with well-drained soil. They prefer acidic soil with a pH level between 4.5 and 5.5. If your soil is not naturally acidic, you can consider adding sulfur to lower the pH levels. Additionally, blueberries require full sun to ensure proper growth and ripening of the fruit.

Before planting, it’s important to prepare the site properly. Clear the area of all weeds and grass, as they can compete with the blueberry bushes for nutrients and water. Dig holes that are about twice as wide as the root ball of the plant and slightly shallower than the root ball depth.

When placing the blueberry bushes in the holes, spread the roots out to encourage better establishment. Make sure the base of the bush is level with the surrounding soil. Backfill the holes with soil, gently firming it around the base of the plants.

After planting, it is recommended to prune back the blueberry bushes. This will encourage branching and promote a healthier plant. Prune any dead or damaged branches, as well as any crossing branches that may inhibit proper airflow and sunlight penetration.

Water the newly planted blueberries thoroughly and regularly, especially during the first few weeks after planting. This will help the roots establish and avoid any stress on the plants. After the initial few weeks, blueberries generally require around 1-2 inches of water per week, depending on weather conditions.

During the first year, it is also important to remove any flowers that form on the blueberry bushes. This will redirect energy towards the plant’s establishment rather than fruit production. After the first year, you can allow the blueberries to bloom and set fruit.

In terms of fertilizers, it is best to do a soil test to determine the nutrient levels and requirements for your specific site. Blueberries generally require periodic fertilization to maintain proper growth and fruit production. Organic fertilizers are preferred, but chemical fertilizers can be used according to the recommended rates.

Blueberries come in different types, including highbush (suitable for most northern regions) and rabbiteyes (suited for southern regions). The selection of blueberry cultivars is extensive, and it’s important to choose cultivars suited for your specific climate, flavor preferences, and desired ripening times. Google or contact your local extension service for recommendations suitable for your area.

Finally, it’s important to keep the area around the blueberry bushes free of weeds. Mulching can help suppress weed growth and maintain even soil moisture levels. Keep in mind that high-quality blueberries can take a few years to establish and reach their full production potential, so patience is key.

While blueberries are relatively low maintenance, there are some common pests and diseases to watch out for. Regular monitoring and proper pest and disease control measures can help prevent damage and ensure the long-term health of your blueberry bushes.

In conclusion, proper planting and establishment are crucial for the long-term success of your blueberry bushes. Pay close attention to site selection, soil preparation, watering, pruning, and pest control. With the right care and attention, your blueberry bushes will thrive and provide you with delicious berries for years to come.

✿ Read More About Berries and Vine Fruits.

Dr Heidi Parkes

By Dr Heidi Parkes

Senior Information Extension Officer QLD Dept of Agriculture & Fisheries.