Blackberries are not only delicious and nutritious, but they’re also relatively easy to grow. Whether you’re looking to enjoy fresh berries in the summer or want to make homemade jams and pies, planting blackberries in your garden can be a rewarding endeavor. With proper planning, soil preparation, and care, you can enjoy bountiful harvests for many years to come.

In this guide, we’ll walk you through everything you need to know about how to plant blackberry plants, growing blackberries, and maintaining them for optimal yields. We’ll also discuss how to prepare soil for blackberries to ensure a healthy and productive plant.

Starting Black Raspberry and Blackberry Plugs

1. Mix together 30% sand and 70% soil. It has to be a very sandy loam soil.
2. The plant will already be growing in a plug with a good root ball. When planting do not plant plug lower in the soil.
3. The plug should be a little higher out of the soil. The stem cannot touch new soil.
4. You can plant in your garden outside if it is below 80 degrees and above 50.
5. Mulch the soil and do not cover the plug.

Fall Care of plant after it has grown

1. trim them to 4-5 feet tall to encourage lateral growth and ensure they remain manageable.
2. Leave about 4-6 of the healthiest and strongest canes per plant, evenly spaced.
3. The canes you remove you can put in a tray with soil and let them root for next years insurance policy.
4. Apply a 2-3 inch layer of mulch (like straw or wood chips) around the base of the plants to retain soil moisture, regulate temperature, and suppress weeds during winter.

Tips and Tricks

1. There is really only a couple of reason they will die:
   a. The plug is too deep in the soil and stem is rotting.
   b. They are drying out. Mulch is key
2. If a plant starts to grow and then starts to go down hill contact us immediately. It is easier to help and injured plant than a dead plant.
3. Call or Email if you have any questions or concerns. Please contact us immediately before you plant if you are concerned with what you receive so we can help.

How to Prepare Soil for Blackberries

Soil preparation is one of the most important factors in ensuring the success of your blackberry plants. Blackberries thrive in well-drained, loamy soil that is rich in organic matter. The following steps will help you prepare the soil properly for planting blackberries.

1. Test the Soil pH

Blackberries prefer slightly acidic soil with a pH between 5.5 and 6.5. Before planting, it’s a good idea to test your soil’s pH. You can use a home soil test kit or send a sample to a local extension office for analysis.

If your soil is too acidic (below 5.5), you can raise the pH by adding lime. If the soil is too alkaline (above 6.5), you can lower the pH by incorporating organic materials such as peat moss or sulfur.

2. Improve Soil Drainage

Good drainage is essential for blackberry plants, as they are susceptible to root rot in waterlogged soil. If your soil tends to retain water, amend it with organic matter like compost or well-rotted manure to improve its texture and drainage.

You can also plant blackberries in raised beds or mounds to enhance drainage and prevent water accumulation around the roots.

3. Add Nutrients

Blackberries benefit from nutrient-rich soil. Before planting, mix in compost, aged manure, or a balanced fertilizer (such as a 10-10-10 mix) to provide essential nutrients like nitrogen, phosphorus, and potassium.

Work the organic matter into the top 12-18 inches of soil, ensuring the area is well-prepared for the young plants to take root and thrive.

How to Plant Blackberry Plants

With the soil prepared, it’s time to plant the blackberry plants. Here’s a step-by-step guide on how to plant blackberry plants to set them up for success. 

1. Choose the Right Location

Blackberries need full sun (at least 6-8 hours of sunlight per day) to produce their best yields. Choose a location in your garden that receives ample sunlight and has well-drained soil.

Keep in mind that blackberries can spread, so give them enough space to grow and establish their roots. Also, avoid planting blackberries in areas where tomatoes, peppers, or other members of the nightshade family were previously grown, as these plants can leave behind diseases that affect blackberries.

2. Spacing the Plants

Proper spacing is key to promoting air circulation and preventing diseases. Space erect blackberry plants 3-4 feet apart in rows that are spaced about 6-8 feet apart. For trailing varieties, allow 5-6 feet between plants and 8-10 feet between rows.

The extra space will give the plants room to spread as they grow and prevent overcrowding.

3. Digging the Holes

Dig a hole that is wide and deep enough to accommodate the roots of the blackberry plant. If you had to heavily amend bad soil, then the hole should be large enough to allow the roots to spread out naturally without being cramped.

4. Planting Blackberries

Place the blackberry plant in the hole, ensuring that the crown (the point where the stem meets the roots) is at soil level. Spread the roots out gently and backfill the hole with soil, making sure there are no air pockets around the roots. Gently tamp down the soil around the base of the plant.

After planting, water the plants thoroughly to help them settle into their new environment.

5. Mulching

Apply a layer of mulch around the base of each blackberry plant. Mulch helps retain moisture, suppress weeds, and regulate soil temperature. Organic mulch, such as straw, pine needles, or wood chips, works best for blackberry plants.

Keep the mulch about 2-3 inches thick, but be careful not to pile it directly against the plant’s stems, as this can lead to rot.

Caring for Blackberry Plants

Now that you’ve planted your blackberry plants, it’s important to care for them properly to ensure healthy growth and abundant fruit. Here are some key tips for growing blackberries:

1. Watering

Blackberries need consistent moisture, especially during their first year of growth. Water them regularly to keep the soil evenly moist, but not waterlogged. Deep watering once a week is usually sufficient, but in hot or dry conditions, you may need to water more frequently.

During the fruiting season, adequate water is especially important to support berry production.

2. Fertilizing

Fertilize blackberries in early spring and again in midsummer to promote healthy growth. Use a balanced fertilizer, such as a 10-10-10 formula, and apply according to the package instructions.

Avoid over-fertilizing, as this can encourage excessive foliage growth at the expense of fruit production.

3. Pruning

Pruning is an essential part of growing blackberries. Erect varieties need to be pruned to maintain their shape and encourage better fruiting. After the harvest, prune the old canes (called floricanes) that produced fruit that year, as they will not bear fruit again.

Leave the new canes (called primocanes) to produce fruit the following year.

For trailing varieties, train the canes onto a trellis or support structure, and prune them back after the growing season to prevent overgrowth.

How to Plant Blackberries in Pots or Containers

If you have limited garden space, you can still enjoy growing blackberries by planting them in pots or containers. Here’s how:

1. Choose a Large Container: Blackberries need space to grow, so select a container that is at least 18-24 inches wide and deep. Make sure it has drainage holes to prevent water buildup.
2. Use Potting Mix: Fill the container with a high-quality potting mix that drains well. You can also add some compost or aged manure to enrich the soil.
3. Plant the Blackberry: Follow the same steps as for planting in the ground, ensuring the crown of the plant is at soil level. Water the plant well after planting.
4. Provide Support: If you’re growing a trailing variety, set up a small trellis or stakes in the container to support the canes as they grow.
5. Care for the Plant: Water regularly, especially during dry spells, and fertilize according to the plant’s needs. Blackberries in containers may require more frequent watering than those planted in the ground.

Stages of Growing Blackberries

Blackberries go through several stages of growth, from planting to harvest:

1. Dormancy: After planting, blackberry plants will enter a period of dormancy during the colder months. This is when the roots establish themselves in the soil.
2. Leaf Growth: In spring, new leaves will emerge, signaling the start of the growing season.
3. Flowering: Blackberry plants will produce small, white flowers, which eventually develop into berries.
4. Fruit Development: The flowers will be pollinated, and berries will start to form. They’ll change color from green to red, and finally, to deep black when they’re ripe and ready to harvest.
5. Harvest: Harvesting typically begins in mid to late summer, depending on your location and the variety of blackberry. Pick the berries when they are fully black and slightly soft to the touch.

Blackberry Pollination

Blackberry plants are self-pollinating, meaning you only need one plant to produce blackberries. However, planting two or more blackberry plants can improve yield, blackberry size, and blackberry uniformity.

Conclusion

Planting blackberries is a relatively simple process that can yield delicious rewards. By understanding how to plant blackberry plants, preparing the soil correctly, and providing the right care, you can enjoy fresh, juicy blackberries from your garden for years to come.

Whether you’re growing blackberries in the ground or in containers, following these guidelines will set you up for success. With proper care, your blackberry plants will reward you with abundant fruit that’s perfect for snacking, baking, and preserving. Happy planting!