Growing Raspberries in Containers
Some raspberry varieties grow too large to easily grow in containers, but newer types, such as ‘Heritage’ or ‘Raspberry Shortcake’, a dwarf, thornless variety, are well suited to growing in large pots. If you choose another variety, be sure it is a fall-bearing type.
Planting tips: Plant in a container that is at least 24-36 inches wide and deep. Half-barrels or five-gallon pots are ideal sizes that allow enough room for new canes to grow in future years. Start with 3-6 canes, depending on the size of the container.
Soil and fertilizer: Use a soilless potting mix for container raspberries. Add a balanced 10-10-10 timed-release fertilizer at planting time.
Pruning and other care: Raspberries are perennials that usually set fruit on two-year-old canes. You might get some berries the first year you plant them but full bearing begins in year two. New green sprouts will grow to become fruiting canes for the following year. Prune all dead canes — ones with no new growth — at ground level.
Winter care: In regions with harsh winters, move the raspberry pots to an unheated garage, allowing the plants to go dormant but watering just enough to keep them alive. Return the pot to a sunny location after danger of frost passes. If you choose to leave the pot in place, insulate it with mulch for winter protection. Avoid using ceramic or terra-cotta pots outdoors year-round in cold climates as freeze-thaw cycles can crack those containers.
Growing Blueberries in Containers
Planting tips: Choose a potting mix designed for acid-loving plants like rhododendrons, azaleas, or camellias. Look for a pH balance between 4.5 and 5.5.
Soil and fertilizer: Use a fertilizer designed for acid-loving plants. Apply in early and late spring to promote growth and fruit production, then stop fertilizing for the year. Feel free to occasionally sprinkle used coffee grounds on the top of the soil around blueberry plants.
Pruning and other care: In early spring, prune any dead wood. Otherwise, blueberries need no other pruning unless you want to shape the plant.
Most blueberry plants need one to two other types of blueberry plants nearby for pollination. However, the BrazelBerries collection of plants, including ‘Peach Sorbet’ and ‘Jelly Bean’ are self-pollinating, although they might produce better with more plants nearby.
If you live in a year-round warm climate, remember that blueberries need cold temperatures for a certain number of hours to produce fruit. Check with your local Cooperative Extension Service to find varieties best suited for your climate.
In general, choose a container variety that is cold-tolerant to one hardiness Zone colder than the one you live in. ‘Sunshine Blue’ is a good variety for warmer climates; ‘Top Hat’ is good for cold regions.
Winter care: In regions with harsh winters, move the blueberry pots to an unheated garage, allowing the plants to go dormant but watering just enough to keep them alive. Return the pot to a sunny location after danger of frost passes. If you choose to leave the pot in place, insulate it with mulch for winter protection. Avoid using ceramic or terra-cotta pots outdoors year-round in cold climates as freeze-thaw cycles can crack those containers.
Growing Strawberries in Containers
Because of their small root systems, strawberries are ideal fruits for containers. Although any pot that’s at least 18 inches wide and 8 inches deep will do, you might want to plant in a hanging basket or a strawberry pot, which features a series of pockets along the sides of the container as well as an opening at the top. A container that is wider than it is deep, such as a half-barrel, allows you to grow more plants.
Planting tips: Check the plant tag, but a rule of thumb is to plant strawberries in pots about 10 inches apart. Some varieties can be spaced closer. Be sure to cover the roots with soil, but avoid burying the crown (the central growing bud) to prevent rot.
Soil and fertilizer: Use a bagged potting mix and avoid garden soil, which won’t drain properly. If the potting soil isn’t already formulated with fertilizer, mix in a balanced 10-10-10 timed-release fertilizer at planting time. Strawberries require little additional fertilizer.
How many strawberry plants do I need?: That depends on the use, but plan 6-10 plants per person for fresh consumption as they ripen.
The best strawberries for containers: Day-neutral types, which produce strawberries throughout the growing season and produce fewer runner plants, are considered best for containers. Some day-neutral varieties to consider include Tribute, Tristar, and Seascape. Everbearing varieties, which produce fruit two times in a growing season, also may be chosen. Avoid June-bearing types that produce only one crop per year and often don’t bear fruit their first year.
Winter care: There are two choices: Discard the plants, dump out the potting soil, and store the pots inside during winter. Or carefully water plants until late fall, then store the container in an unheated garage, allowing plants to go dormant and watering just enough to keep them alive. Return the pot to a sunny location after danger of frost passes.
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