Growing blueberries in the home garden (2023)

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Growing blueberries in the home garden (1)

Quick facts aboutgrowing blueberries

  • Blueberries need full sun.
  • Blueberries require acidic soil.
  • Plant two or more varieties for successful pollination.
  • Plants won't have much fruit the first2 to 3 years.
  • Harvest is biggerafter 5 years.
  • Blueberry plants grow slowlyand reach full size in8 to 10 years.
  • Each winter, prune out old, weak and dead wood.

Many blueberry varieties grown in the Upper Midwest were bred for this climate by the University of Minnesota, making them right at home in the Minnesota home garden.

Growing blueberries in the home garden (2)

Blueberry plants grow slowly, and they may not seem to get much bigger from year to year. It takes a blueberry bush about 10 years to reach mature size, but this also means they will live a long, long time.

It will be 2 or 3 years before you start getting large harvests, but it is definitely worth the wait. The bushes are very attractive and will be a beautiful addition to your yard while you wait for fruit.

Care through the seasons

  • March—Prune bushes before new growth begins, after coldest weather has passed.
  • April, May—Plant new blueberry bushes.
  • May, June—Apply mulch for growing season.
  • July—Harvest.
  • July throughSeptember—Apply soil amendments.
  • September, October—Apply mulch for winter protection and enjoy fall color.
  • November, December—Put fencing around plants to keep out rabbits.

Preparing to plant

Blueberry plants require acidic soil (pH 4.0 to 5.0) that is well-drained, looseand high in organic matter. Most garden soils in Minnesota have higher pH and must be amended.

If pH is too high:

  • Growth of the plant is slowed.
  • Leaves discolor.
  • Plants may die.


Growing blueberries in the home garden (3)

Soil pH

Have your soil tested to determine pH.

Blueberries require a pH between 4.0-5.5. If the pH of the soil is over 5.5, then the soil is not acidic enough for blueberries.

Add an acidic soil amendment such as sulfur or sphagnum peat to the soil to lower the pH before planting. Sulfur is preferred, because the environmental consequences of sphagnum peat mining are becoming an increasing concern.

Using sulfur

It is best to amend the pH with sulfur the fall before planting, because it takes several months for sulfur to change the soil pH. To do this, add elemental sulfur to the soil in the planting area.

Elemental sulfur is widely available in garden stores. It may be marketed as soil acidifier or as soil sulfur/sulphur. The amount of sulfur to apply depends on the soil pH and soil type. To determine how much to apply, follow the product label.

Using sphagnum peat moss

Since sulfur takes months to alter the pH, gardeners wishing to plant immediately may need to create an acidic planting medium to plant into. Adding sphagnum peat can serve this purpose if the original pH is between 5.5-7.0.

  • Add 4-6 inches of sphagnum peat to the top 6-8 inches of the soil in the area where the blueberries will be planted. This can be done by digging out the soil in the planting area, inserting the peat, and mixing part of the soil back in so that the planting area is a mixture of peat and soil. Please be mindful of the potential environmental impacts of peat mining.
  • A soil with a pH closer to 7.0 will require more peat (5-6 inches) than a soil with a pH of 5.5-6.0 (4-5 inches).
  • Amend the soil in the entire planting area, not just in the planting holes. The roots will expand outward, so amending the soil in a 2-3 foot wide strip is important to ensure the roots have access to acidic soil.

Since these are general guidelines, and every soil responds differently to inputs, submit another soil sample from the planting area about 6 months after planting. This will show whether the soil has reached the correct pH, or of more amendment is needed.

As thesoil settles and decomposes over the years, you will need to continue adding sulfur to the planting bed.

Continue to have your soil pH tested every year or two, and amend as needed.

Do not use coffee grounds as a pH amendment

Coffee grounds are not always acidic and should not be relied upon as a pH amendment for blueberries. Even if the coffee grounds you use happen to be acidic, a massive amount would be needed to change the soil pH, and the results would not be reliable.

Fertilizer and mulch

If you see light-green or red leaves in the summer or not much shoot growth, it is likely that the soil pH is no longer in the optimum range of 4.0 to 5.0, or nitrogen is needed. Choose an organic acid fertilizer, such as one recommended for azaleas and rhododendrons.

Throughout the life of the plants, maintain a few inches of wood mulch around them.

(Video) How to Grow Blueberries: 7 Step Guide for Beginners

Selecting plants

Blueberry plants are widely available at local and online nurseries. Be certain the plants you buy are winter hardy to your USDA zone (zone 3 or 4 in Minnesota).

If buying plants locally, find potted plants that are at least two or three years old.


Growing blueberries in the home garden (4)

If buying plants online, most likely they will arrive dormant and bare root. Order early to get the best selection.

Most nurseries ship bare root plants at the appropriate time for planting in early spring. Keep dormant plants in a dark, cool, moist place until you're ready to plant.

Make sure the roots stay moist but not saturated, and plant as soon as possible. Soak roots in a bucket of water for a couple of hours before planting.

If you buy plants at a local nursery, keep potted plants well-watered in a sunny location until plantingand plant as soon as possible.

Growing blueberries in the home garden (5)

The University of Minnesota fruit breeding program has developed blueberryvarieties that are perfectly suited to our climate. The varieties listed have been grown at U of M research farms in USDA zones 3and 4.Recommendations are based on trial results.

Planting at least two varieties is best, as more berries of larger size will be produced if flowers are fertilized with pollen from another variety. Bumblebees and other native insects are enthusiastic pollinators of blueberries.The more insects working the plants, the more fruit you will harvest.

Region, weather and cultural practices may result in higher or lower yields.

University of Minnesota bred varieties are in bold and include the date of introduction. Average yield is based on data collected in east central Minnesota from mature plants, planted in full sun with other varieties, and watered regularly. Zone hardiness lists zone 4 first then zone 3.

Blueberry varieties for Minnesota

Variety Plant size (h x w) Hardiness (zone 4 to 3) Avg yield (lbs/bush) Description
Bluecrop 5 x 5 ft Good to fair 3 to 12 Large, mild-sweet berries. Ripen mid-season
Chippewa (1996) 4.5 x 5 ft Excellent to good 3 to 8 lbs Medium-large, sky-blue berries. Firm texture, sweet flavor. Ripen mid-season.
Northblue (1983) 3 x 4 ft Excellent to good 3 to 9 lbs Large, dark blue, firm berries. Ripen mid-season.
Northcountry (1986) 2.5 x 4 ft Very good to fair 3 to 5 lbs Small-medium, sky-blue berries.Sweet, mildflavor. Ripenearly.
Northland 4 x 4 ft Excellent to good 3 to 12 lbs Medium, mild flavored berries. Ripen mid-season.
Northsky (1983) 2 x 3 ft Good to fair 1 to 5 lbs Medium, sky-blue berries. Sweet and mild. Ripen mid-season.
Patriot 4.5 x 4 ft Good to fair 3 to 12 lbs Very large, tart berries. Ripen early.
Pink Popcorn™ (2014) 4 x 4 ft Very good to good 3 to 5 lbs Medium, cream to pink berries. Ripen early to mid-season. Self-pollinating.
Polaris (1996) 4 x 4 ft Very good to good 3 to 8 lbs Medium, firm, crisp berries. Intense flavor. Ripen early.
St. Cloud (1990) 5 x 4 ft Very good to good 2 to 7 lbs Medium, dark blue, firm berries. Sweet flavor, crisp texture. Ripen early.
Superior (2009) 5 x 4 ft Very good to good 3 to 8 lbs Medium, sweet-tart berries. Ripen late.

Print expanded content.


Blueberries grow best in full sun. Plants will tolerate partial shade, but too much shade causes plants to produce fewer blossoms and less fruit.

(Video) Growing Blueberries From Planting to Harvest


  • Avoid areas surrounded by trees.
    • Trees provide too much shade, compete with plants for water and nutrients, and interfere with air movement around plants.
    • Poor air movement increases danger of spring frost injury to blossoms and favors disease development.
  • Space blueberry plants about 3 feet apart. If the variety you purchase is listed as growing larger than that, then space them a little further apart.
  • Plant young blueberry bushes in late April or early May.
  • Dig the holes large enough to accommodate all the roots and deep enough so you can cover the uppermost roots with 3 to 4 inches of soil.
  • Pack the soil firmly around the roots, then mulch the planting with 2 to 4 inches of sawdust, peat moss, oak leaf or pine needle mulch.
    • These types of mulch are acidic and will help maintain a low soil pH.
    • Mulch also helps maintain soil moisture, prevents weeds, and reduces soil temperature in the summer.
    • Replenishmulch as needed.
  • Water thoroughly after planting to ensure moisture reaches the deepest roots.
  • Water the plant frequently and deeply, enough to keep the soil moistbut not saturated.

Generally no support is required.

If a plant seems to be weak or growing at a non-vertical angle, a stake may be driven into the ground close to the main stem, and the stem gently tied to the stake with a wide tie such as those used for trees, or with a strip of fabric.

Do not use wire as it may cut into the stem.

Managing pests and diseases

Insects and wildlife cause minimal damage to blueberries. Because of the acidic soil requirements of blueberries, you are much more likely to have nutritional issues than pest issues. This highlights how important correct diagnosis is in addressing issues.

Find help identifying common pest problems:

  • Use the online diagnostic tools What insect is this? and What's wrong with my plant?
  • Send a sample to the UMN Plant Disease Diagnostic Clinic.
  • Visit Ask a Master Gardener to share pictures and get advice.


Spotted wing drosophila is an invasive fruit fly that lays its eggs in ripe fruit, leading to soft, damaged berries.

The bright green and bronze colored Japanese beetle feeds on the leaves of blueberry plants, which can make them susceptible to winter injury.

In the late fall and winter, rabbits and deer enjoy nibbling on the stems of blueberry bushes. This may drastically stunt the plant. Protect plants by surrounding them with chicken wire or similar fencing in the fall and winter.

(Video) How to Grow Raspberries, Blueberries, and Blackberries in Containers

Diseases are unlikely to cause significant problems on home grown blueberry plants.

Careful pruning will help prevent disease infection. Prune out and dispose of any part of the plant that is dead or dying.

For more information on disease and insect pests, see Pest management for home blueberry plants, Viruses of backyard fruit and Blueberry witches' broom.


Examine the plants for cankers that first appear as small, discolored areas on the stems. As the affected areas enlarge, the margins remain reddish and the bark in the central part turns gray and then brown.

  • Cankers usually occur close to the ground but may be higher on the stem.
  • Stems are usually girdled in one season by cankers.
  • Girdled stems die and leaves turn brown.
  • Cut out affected parts several inches below the cankered area.

How to keep your blueberry bushes healthy and productive


Growing blueberries in the home garden (6)

In the first two years, remove flowers in the spring to encourage plant growth. This is necessary to ensure healthy, productive plants for years to come.

Production of flowers and fruits stunts growth when plants are too small or weak. A good-sized, healthy canopy is needed to support the fruit.

Blueberry plants grow slowly, which is one reason they live so long. The plants will put on plenty of fruit after the first few years, but don't be surprised if the plants stay small, as mature size is usually not reached until the plants are 8 to 10 years old.

Remove weeds regularly to keep your planting neat and clean and to prevent competition for water and nutrients. Mulch helps prevent weeds.

Blueberry plants in soil with a pH above 5.5 will struggle to absorb the nutrients they need from the soil.

Signs of pH problems:

  • Chlorosis, or yellow discoloring of the leaves, is usually the first sign of a soil pH problem.
  • Slowed growth.
  • Poor fruit production and general plant failure.
  • Soil amendments don't work quickly enough to fix this in one season.

Spraying plants with a foliar chelated iron fertilizer, or spraying new leaves as they emerge, will temporarily green up the leaves, but it will not improve plant health in the long term.

Soil pH problems must be corrected to improve blueberry plant health. To amend soil pH:

  • Keep the plants mulched with a few inches of oak leaf or pine needle mulch to help maintain soil acidity.
  • Use a fertilizer that includes elemental sulfur, such as ammonium sulfate

Soil pH is easiest to amend with sulfur a year before the blueberries are planted. Do not plant blueberries until the soil is at the correct pH (4.5-5.5), or the plants may fail in the first year.

Test and monitor soil pH to stay ahead of this problem. Simple and inexpensive soil pH test kits are available online and at many garden centers. Or have your soil tested by the U of M Soil Testing Laboratory.

(Video) How to GROW Blueberries in a RAISED Garden Bed

At planting, prune only to remove any broken, dead or dying parts of branches. After the first year, prune the bushes annually in the early spring before growth starts.

Prune to:

  • Remove dead and diseased wood.
  • Shape the bush.
  • Maintain enough vigorous main stems to prevent overbearing.
  • Stimulate new shoot growth.

Fruit is produced on one-year-old wood. The largest berries are produced on the healthiest wood, so a good supply of strong, one-year-old wood is desirable.

  • Keep the bush fairly open by cutting out any weak, old stems that no longer produce strong young wood.
  • Remove these older stems at ground level.
  • Keep four to six healthy older stems and one to two strong new shoots per mature bush. The new shoots will eventually replace the older stems.
  • Take care not to prune too aggressively, as this can greatly reduce yield.

Harvest ripe fruit regularly

Berries will turn from green to blueand are ready for harvest when they're completely blue and are springy when gently squeezed.

  • Taste a few berries that lookripe to get a good idea of how ripe fruit looks and feels.
  • Fruit will ripen on one bush over a period of a couple weeks.
  • Gently pull berries off the plant. Some stems might remain attached to the berries.

Place berries in a firm container in the refrigerator shortly after picking. Avoid layering berries more than a couple inches deep to prevent the lower berries from being damaged.

Do not wash berries until ready to eat. This will prevent them from molding in storage. Blueberries last longer in the refrigerator than many other berries. Generally, plan to use the berries within a week or so.

Blueberriesfreeze well

  • For best freezing, wash berries and allow to dry.
  • Lay dry berries in one layer on a baking sheet and place in freezer.
  • Once the berries are frozen firm, place in an airtight container or freezer bag and return to freezer.

Chalker-Scott, Linda.Coffee grounds— will they perk up plants? Washington State University,, Winter 2009.

Mazerolle,Marc J. "Detrimental effects of peat mining on amphibian abundance and species richness in bogs," Biological Conservation, Volume 113, Issue 2, 2003, Pages 215-223, ISSN 0006-3207,

Strik,B.C. Growing Blueberries in Your Home Garden.Oregon State University Extension Service.EC 1304. Revised March 2008.

Pest management for home blueberry plants. University of Minnesota Extension. 2015.

Emily S. Tepe,horticultural science researcher;Emily E. Hoover, Extension horticulturist;James Luby, professor of horticultural science;Annie Klodd and Marissa Schuh, Extensioneducators

Reviewed in 2020

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How many years does it take for a blueberry bush to produce fruit? ›

Blueberry plants grow slowly, and they may not seem to get much bigger from year to year. It takes a blueberry bush about 10 years to reach mature size, but this also means they will live a long, long time. It will be 2 or 3 years before you start getting large harvests, but it is definitely worth the wait.

Do you need 2 blueberry bushes to produce fruit? ›

Answer:Blueberry plants are self-fertile (each flower has the necessary male and female parts), however you still should buy more than one variety. That's because a blueberry plant produces more berries and bigger berries when it cross pollinates with a different blueberry variety.

Do blueberries grow better in pots or in the ground? ›

Blueberry bushes like very acidic soil, and a pH level between 4.0 to 4.8 is required for the plants to absorb water and nutrients and produce berries. Because most garden soil is not naturally this acidic, planting in containers enables you to better control your soil's acidity levels.

What can you not plant near blueberries? ›

There are a few types of garden plants to avoid placing near blueberries. This includes nightshades like tomatoes, peppers, and potatoes, as well as brassicas like kale, cabbage, brussels sprouts, and cauliflower. You may also wish to avoid planting melons and salad greens like lettuce near your blueberries.

Is Miracle Grow good for blueberries? ›

Blueberry bushes will grow strong and prolific when you use Miracle-Gro® soil and plant food together to create the ideal nutrition-filled growing environment.

How do you winterize blueberry bushes? ›

Protecting blueberries over winter by covering the plants and mulching around them can be beneficial. It is important when covering the plants to trap heat much like a small greenhouse. A frame of PVC covered and securely anchored can accomplish this purpose. Also, keep your plants moist.

Do blueberry plants like coffee grounds? ›

If you are wanting more acid for azaleas, blueberries, rhododendrons and evergreens, use fresh coffee grounds, as used grounds have pretty much a neutral pH.

Can you eat blueberries the first year? ›

You can offer blueberries whenever your baby starts solids, usually around 6 months.

What month is best to plant blueberry bushes? ›

You can plant at any time of year but autumn is best or, if winters are exceptionally cold where you garden, wait until spring. The soil that blueberries grow in is really important. They're heathland plants, so there's little point planting them in anything other than acidic soil.

Can you grow blueberries in 5 gallon bucket? ›

Blueberries are another soft fruit that works well in 5 gallon buckets. Many people grow blueberries in pots because they need ericaceous (acid) soil conditions. Growing in a bucket in a suitable growing medium (with a pH of around 5.5) is therefore easier than amending a larger area of soil in a garden.

How do you tell if your soil is acidic enough for blueberries? ›

If your soil is naturally acidic, with a pH of 4.6 to 5.5 (as determined by a soil test), you're good to go, as far as blueberries are concerned. Otherwise, if your soil is alkaline, or “sweet,” meaning its pH is 6.0 or higher, you'll need to amend it.

Can I plant blueberries next to my house? ›

If you use them near your house, keep them several feet away from the foundation. Concrete from the foundation could leach calcium and raise the pH of the soil. As long as blueberry bushes are within 100 feet of each other, cross-pollination should take place.

What is good to put around blueberry bushes? ›

Pine needles, wood chips or bark mulch work well as mulches for blueberries. Avoid using dyed mulches (black or red). Avoid using synthetic mulches like black plastic or landscape fabric.

Do blueberries take over the garden? ›

Spreading and take over is always a concern when adding new plants to the garden. Fortunately, blueberries are slow to spread and are considered noninvasive. Blueberries grow in U.S. Department of Agriculture plant hardiness zones 4 through 10. In USDA zones 4 through 7, look for Northern highbush varieties.

Are eggshells good for blueberries? ›

Eggshells can increase the acidity of garden soil, making the soil better for blueberries.

Does Epsom salt help blueberry plants? ›

On young rabbiteye blueberry plants, the most common symptom of a magnesium deficiency is mature leaves that are pink on the edges and yellowish between the veins. When magnesium is low, based on a soil test, you can add Epsom salts (magnesium sulfate) at the rate of 3 ounces per plant to compensate for the deficiency.

What is the best natural fertilizer for blueberries? ›

Natural Fertilizer for Blueberries

For organic fertilizers for blueberries, you can use blood meal or fish meal to provide nitrogen. Sphagnum peat or coffee grounds will help to provide acidity. Bone meal and powdered seaweed used to fertilize blueberries can provide the potassium and phosphorus.

Do blueberries need to be covered in winter? ›

Varieties planted in patio pots generally need more protection since their roots are above ground and less sheltered. Berries planted in the ground need less care; just add a two to three inch blanket of mulch to keep them warm. Caring for blueberries, raspberries and blackberries in containers over winter is easy.

Should blueberry bushes be cut back in the fall? ›

Late winter is the best time to prune blueberries. Remember, these are very hardy shrubs that do best in cold climates. This plant is badly in need of pruning. Pruning blueberries can take place as early as late December.

Should blueberry bushes be cut back for winter? ›

Blueberries should be pruned during the winter while the bushes are dormant. In winter, flower buds are easily visible on one-year-old wood and their numbers can be adjusted by pruning to regulate the crop load for the coming year. Blueberries do not need to be pruned in the first year.

Are eggshells good for plants? ›

The shells also contain other minerals that help plants grow, including potassium, phosphorus, and magnesium. Eggshells are, therefore, an effective and inexpensive fertilizer for outdoor garden soil and houseplants.

What do you put in a raised bed for blueberries? ›

For raised beds mix equal volumes peat moss with bark (not cedar or redwood), compost or planting mix. Talk to your local garden center. They're experts in your area and can best advise you on soil amendments.

Are banana peels good for plants? ›

Banana peels contain: calcium, which promotes root growth helps add oxygen to your soil. magnesium, which assists with photosynthesis. sulphur, which helps plants develop strong roots and repel pests.

Can you squish a blueberry and plant it? ›

Plant that smashed blueberry (like you would a seed) in a small pot with soil. Lightly water your blueberry plant. Cut the bottom of a plastic bottle off, then use it to cover your plant to trap in humidity. In a few weeks, the seedling will sprout.

How old is a 3 gallon blueberry bush? ›

How Old is a 3 Gallon Shrub? 3 gallon shrubs are generally 3 or 4 year old plants.

How old is a 2 gallon blueberry bush? ›

Our 2 year old blueberry plants are 2-3 feet tall and grown in a 2 gallon or 3 gallon container. These plants will typically bear no fruit or a small amount of fruit per plant in the first growing season.

Do blueberry plants grow back every year? ›

Do blueberry plants come back every year? Yes, they will come back every year as long as you planted a variety that is hardy in your growing zone. Blueberry bushes are perennials that can live for decades in the right environment.

What are the tips for growing blueberries? ›

Select a sunny, sheltered spot. While blueberries are tolerant of shade, better crops are obtained in the sun. At the same time, they should not be exposed to harsh, drying winds. Don't plant blueberries too close to trees, as the trees will not only block out sunlight, but will also suck up any moisture in the soil.

Are blueberries easy to grow? ›

They don't take much space or effort. And, once you know the basics, you are good to grow. Native to North America, blueberries grow well in acidic soil and in areas with at least 140 frost-free days per year. They're also perfect for organic gardeners since they can easily be grown without pesticides.

Will blueberry bushes produce the first year? ›

Blueberries will flower and fruit sparsely their first year in the ground, but it's best to remove the first-year blossoms by hand. This keeps new blueberries focused on good root development instead of fruit and seeds. They'll reward you with better harvests in years to come.

What is the life expectancy of a blueberry bush? ›

How long do blueberry bushes typically live? With proper care and in the right environment, blueberry bushes live 50 years or more.

How many blueberries will one plant produce? ›

Gardeners can expect to harvest 5 to 10 pounds of fruit per plant from mature highbush blueberries. Half-high blueberries generally produce 1 to 3 pounds per plant. Once established, an annual application of an acid-producing fertilizer, such as ammonium sulfate, in early spring is sufficient for blueberries.

Can you plant blueberries in October? ›

So when do you plant a blueberry bush in fall? Planting blueberry bushes in fall should occur by mid-October to allow them time to acclimate prior to winter. Otherwise the ideal time to plant blueberries is between November and February after severe frosts have passed.

Do you cut back blueberry bushes for winter? ›

Most blueberry pruning is done during the dormant (winter) season after the leaves have fallen. Mature canes can be up to two inches in diameter, so long-handled loppers capable of cutting large stems are essential. Smaller one-handed pruners are used for finish work and for shaping young bushes.

How difficult is it to grow blueberries? ›

They don't take much space or effort. And, once you know the basics, you are good to grow. Native to North America, blueberries grow well in acidic soil and in areas with at least 140 frost-free days per year. They're also perfect for organic gardeners since they can easily be grown without pesticides.

Should I put mulch around my blueberry bushes? ›

Blueberries have dense, shallow roots and do best with 2-4 inches of mulch over the roots to conserve moisture, prevent weeds and build organic matter. We use clean wood chips, but bark mulch, acid compost, pine needles or grass clippings all work well.

What is the best location for blueberry bushes? ›

Select a sunny location with well-drained soil that is free of weeds and is well-worked. It's best to locate your blueberry plants in an area where irrigation is readily available as best results will be achieved by keeping the root zone moist throughout the growing season.

Should I cut dead branches off blueberry bush? ›

Pruning an Older Blueberry Bush

Prune out all the dead, diseased wood. Remove crossing stems and any crossing or particularly spindly-looking branches. Then remove any low branches that will touch the ground when fruit-laden.

How many blueberries should I plant for a family of 4? ›

Blueberries. 3 Plants per person is usually enough. We have 12 mature plants for our family (2 per person) and could definitely use more!

What is the best fertilizer for blueberries? ›

Ammonium sulfate is the most commonly recommended blueberry fertilizer for ensuring the pH of the soil remains acidic. How much to initially apply depends, of course, on how acidic your soil is to begin with. Typically, 2 to 4 ounces per bush per year is adequate to maintain an established pH between 4.5 and 5.1.

Is Epsom salt good for blueberries? ›

On young rabbiteye blueberry plants, the most common symptom of a magnesium deficiency is mature leaves that are pink on the edges and yellowish between the veins. When magnesium is low, based on a soil test, you can add Epsom salts (magnesium sulfate) at the rate of 3 ounces per plant to compensate for the deficiency.

What can I add to blueberry soil? ›

Blueberries like a soil that is high in organic matter. They also tend to prefer a light soil. For these reasons, I add 40% peat moss and 10% compost, then the remaining native soil should make up the last 50%.

How cold is too cold for blueberry bushes? ›

Blueberry Cold Susceptibility

During the winter, dormant flower buds of highbush blueberries will survive temperatures as low as -20 to -30°F while the less hardy rabbiteye (V. ashei Reade) have survived -10°F but are often damaged below 0°F. As flower bud swell progresses, cold tolerance decreases.


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