Growing and Pruning Raspberries in Colorado: A Comprehensive Guide

Raspberries are a delightful addition to any home garden, providing delicious fruit and vibrant foliage. In Colorado, only selected varieties of red and yellow raspberries are recommended due to the state’s unique climate. This guide covers everything from choosing the right varieties to effective pruning techniques, ensuring you enjoy a bountiful raspberry harvest.

Suitable Raspberry Varieties for Colorado

Red and Yellow Raspberries:

  • Best for general cultivation in Colorado.
  • Recommended varieties include summer-bearing types like ‘Nova’ and ‘Boyne,’ and fall-bearing types suitable for the Front Range and Western Slope.

Black Raspberries:

  • Hardy varieties such as Niwot and Pequot can thrive in some Colorado areas.

Other Varieties:

  • Blackberries, purple raspberries, boysenberries, loganberries, and dewberries require special winter protection and are less recommended.

Types of Raspberries

Summer-Bearing (Floricane):

  • Produce flowers and fruit on second-year canes.
  • Fruit once per season.

Fall-Bearing (Primocane or Everbearing):

  • Produce flowers and fruit on first-year canes.
  • Can provide two harvests: one in fall and a lighter one in summer on the lower parts of the canes.
Chart Provided by CSU Extension

Soil Preparation and Planting

Soil Requirements:

  • Well-drained garden soil rich in organic matter.
  • Conduct a soil test to determine nutrient needs, especially nitrogen, zinc, iron, and manganese.

Planting:

  • Plant red and yellow raspberries as rooted suckers in spring.
  • Space plants 2-3 feet apart with rows 5-10 feet apart.
  • Cut tops to 4-6 inches above ground after planting.

Pruning Techniques

Red Raspberries:

  • Can be trained to a single stake or supported by horizontal wires 18” apart.
  • Freestanding canes should be headed back below 4.5 feet to prevent bending.

Black and Purple Raspberries:

  • Less vigorous and pruned heavily.
  • Often left freestanding.

General Pruning Tips:

  • Remove spent floricanes after fruiting to prevent disease.
  • In spring, remove dead, weak, and small canes.
  • For fall-bearing varieties, either mow all canes to ground level after harvest or remove the fruited cane parts, leaving the lower portions for summer fruit.

Trellising and Support

  • Trellising is advisable to keep canes erect and simplify harvesting.
  • Use wires 3 feet above ground to confine canes to the hedge row.
  • Larger fruit can be achieved by tipping canes at a convenient height.

Watering and Fertilization

Watering:

  • Maintain moderate moisture in the root zone.
  • Increase watering during flowering and fruiting periods.
  • Withhold water after the first frost to harden off plants.

Fertilization:

  • Apply nitrogen fertilizer as needed based on soil tests and cane growth.
  • Fall-bearing raspberries require more nitrogen than summer-bearing varieties.

Winter Protection

For Summer-Bearing Varieties:

  • Lay canes down and cover with soil or mulch after November 1.
  • Lift canes in early April and return the soil to the furrow.

For Fall-Bearing Varieties:

  • Mow canes after harvest to avoid winter damage.
  • If a summer crop is desired, protect canes similarly to summer-bearing types.

Yield and Longevity

  • Expect 15-20 pounds of fruit per year from a 25-foot hedge row by the third year.
  • Productivity may decline after 8-10 years, necessitating relocation of the raspberry bed.

Disease and Pest Management

Common Pests:

  • Spider mites, which can be managed by maintaining healthy, well-watered plants.
  • Raspberry cane borers, identified by wilting cane tips, can be controlled by removing affected canes.
  • Spotted wing drosophila, managed through refrigeration, cleanup of dropped fruit, and trapping.

Preventative Measures:

  • Purchase disease-free stock from reputable sources.
  • Regularly thin canes to improve light and air circulation.

By following these guidelines, you can successfully grow and enjoy raspberries in your Colorado garden. For more detailed information and expert advice, contact Echter’s Garden Center or refer to resources from Colorado State University Extension. Happy gardening!

Growing Blueberries: A Comprehensive Guide to Blueberry Care & Culture

Blueberry bushes are an excellent addition to both edible and ornamental landscapes. They not only produce delicious, nutritious fruit but also enhance the garden’s aesthetic with their glossy, deep green leaves in summer and vibrant scarlet foliage in autumn. Here’s how to successfully cultivate blueberries, particularly in regions like the Rocky Mountain West, where soil conditions may pose a challenge.

Essential Growing Conditions

To thrive, blueberries require well-drained, acidic soil (pH 4.5 – 5.5) rich in organic matter. They should be planted in part shade/shade locations and protected from harsh winter winds. Given that naturally acidic soil is rare in the Rocky Mountain region, consider the following methods to create suitable conditions:

  1. Soil Replacement: Remove existing soil from the planting area to a depth of two feet and replace it with a mix of 50% good commercial topsoil and 50% horticultural sphagnum peat moss. Adding extra compost is also beneficial.
  2. Container Planting: Use half a whiskey barrel or a large 20″ plastic pot with additional drainage holes. Fill with the soil mix mentioned above and sink the container into the ground.
  3. Raised Beds: Build a raised bed (3-4 feet wide and 8-12 inches high) using the same specialized soil mix.

Regularly test the soil’s pH using test kits available from Echter’s or other local garden centers.

Plant Care Tips

  • Mulching: Apply a layer of bark chips to conserve moisture, cool the roots, and suppress weeds.
  • Watering: Maintain continuous but moderate moisture throughout the growing season. Avoid over-watering by checking the soil’s top inch for moisture before watering.
  • Fertilization: Annually amend the soil with compost and regularly acidify with products like Ferti-lome Evergreen Food or Miracid. Start fertilizing in May, just before bloom, and continue as directed on the fertilizer label.
  • Pest and Disease Control: Insect problems are rare but can be managed with Malathion if necessary. To prevent fungal issues, water in the early morning and prune correctly.

Bird Control

Birds such as robins, finches, and starlings enjoy blueberries just as much as we do. To protect your crop, cover shrubs with Ross Garden Netting as berries begin to ripen, following the manufacturer’s instructions.

Harvest and Storage

Blueberries are harvested from July through September. Store them in a refrigerator at 32-35°F to keep them fresh for 10-14 days. Fresh blueberries freeze well and maintain their taste, texture, and appearance for up to two years when stored at 0°F. Always freeze blueberries unwashed to preserve their natural protective coating. They can also be canned or processed into syrup.

Winter Protection

For best results, protect blueberry bushes during winter:

  • Apply 4-5 inches of bark mulch around the base in late November after the ground freezes. Remove the mulch in April.
  • Water during extended dry periods or when there’s no snow cover.
  • Stop fertilizing by the end of July to allow plants to harden off before winter.

Pruning Guide

Proper pruning is essential for healthy blueberry plants and optimal fruit production:

  • Establishment Years (First Two Years): Remove winter-killed and diseased wood. Prevent fruit setting to aid establishment by rubbing out flower buds in early spring.
  • First Pruning Year: Prune in early spring after the bush has been planted for two seasons. Remove diseased or dead wood and any crossing canes. Keep two or three healthy canes.
  • Second Through Fifth Years: Continue the same process each year, maintaining a goal of 12 healthy canes of different ages by the fifth year.
  • Maintenance Pruning (After Fifth Year): Maintain the bush at 12-15 canes, pruning out the oldest canes annually and leaving two or three new ones.

Pruning, along with proper soil pH, drip irrigation, and mulching, significantly impacts berry size and quality. Annual pruning ensures consistent, high-quality fruit production.

In summary, with the right care and attention, blueberry bushes can be a fruitful and beautiful part of your garden. By following these guidelines, you can enjoy bountiful harvests of delicious, nutritious blueberries year after year.

For more gardening tips and expert advice, visit our website at Echter’s Garden Center or call us at 303-424-7979.

Nurturing Colorado’s Feathered Friends

A Guide to Supporting Backyard Birds
Through Winter

Here in Colorado, our feathered friends enjoy a variety of food sources and abundant water supplies during our warmer months, but they can face an array of challenges when it comes to surviving winter conditions. It’s important to be aware of what birds need at this time of year and the vital role that bird enthusiasts can play in supporting local avian populations.

Backyard birds need three things to survive the harsh conditions they’ll experience in the winter: food, water, and shelter. It’s crucial to provide proper food sources, adequate shelter, and access to unfrozen water throughout this difficult season.

Birdseed Blends: A Winter Buffet
One of the most effective ways to aid birds in their winter survival is by offering a diverse and nutritious menu through thoughtfully chosen bird seed blends. Rather than bread, which most people think is a good food source, birds need seed blends that are denser in calories and help them generate the energy they need to fly and stay warm. During the winter, natural food sources become scarce, making backyard feeding stations a lifeline for our feathered neighbors.

Consider incorporating a mix of seeds to feed a variety of bird species that may visit your feeders. Black oil sunflower seeds are a favorite among many birds, including chickadees, nuthatches, and finches. Safflower seeds are an excellent choice, as they are less attractive to squirrels, reducing competition for the precious winter food supply. Nyjer seeds are rich in oils, providing essential energy for small finches like goldfinches and siskins.

Adding suet cakes to your feeder can be a game-changer in the winter! High in fat and calories, suet helps birds maintain their energy levels in cold temperatures. Woodpeckers, nuthatches, and chickadees are particularly fond of suet, making it a valuable addition to your backyard bird buffet.

It’s also important to be consistent with your feeding schedule. Birds will come to rely on the food sources you offer, and a consistent supply helps them navigate the challenges of winter.

Providing Shelter: A Winter Refuge
Colorado winters can be harsh at times, and the importance of shelter for birds cannot be overstated. Dense vegetation, evergreen trees, and well-designed birdhouses offer essential protection from harsh winds and freezing temperatures.

Consider installing birdhouses designed for specific species that reside in your region. Bird houses can be simple or complex and come in many sizes. The size of the entry hole is important for attracting specific kinds of birds. Make sure the house is equipped with a removable panel so it can be cleaned between uses and a drainage hole so water doesn’t collect in the house. Properly placed and maintained birdhouses can be essential for cavity-nesting birds such as chickadees, bluebirds, and wrens.

In addition to natural and artificial shelters, placing brush piles in your yard can create hiding spots for birds seeking protection from predators and harsh weather. These piles also attract insects, providing an additional food source for foraging birds.

Water: A Liquid Lifeline
While it might seem counterintuitive, providing water for birds during the winter is just as important as offering food. Birdbaths provide a safe spot both for drinking and for birds to clean their feathers. Natural water sources can freeze over, leaving birds without access to this vital component of their survival.

You can easily provide water for birds in a birdbath or simply by leaving a saucer full of water near the feeder. Electric de-icers can be used to keep the water from freezing. Alternatively, you can add a submersible heater to your existing bird bath to keep the water ice-free.

When positioning your bird bath, choose a location that offers a clear line of sight for approaching predators, ensuring the safety of the birds while they drink and bathe. Regularly check the water level and clean the bird bath to prevent the spread of diseases.

As winter blankets the Colorado landscape, our efforts to support backyard birds become crucial for their survival. By providing a diverse range of birdseed blends, offering shelter, and ensuring access to unfrozen water, we can make a significant difference in the lives of our feathered friends.

Nurturing Houseplants in Winter

Now that our doors and windows are closed for the winter, houseplants provide a welcome splash of life and color in our indoor landscape.

Fresh, vibrant, and green, those innocent looking houseplants contribute much more than just a touch of color though. They play a significant role in keeping stale, recirculated air clean. Plants create fresh oxygen, filter dangerous toxins out of the air, and add a bit of fresh air to any room they live in. For the most part, houseplants are pretty easy to care for, but the winter season can present some special challenges for them. Here are a few quick tips to make your indoor garden a successful one.

BUMP UP THE AVAILABLE LIGHT
Adequate light is one of the most important environmental factors in successfully growing plants indoors. Too little light may make your plant leggy with spindly new growth. Let your plants receive as much light as possible during the darker winter days. As the angle of the sun changes and the days get shorter, you may want to rearrange your plants to ensure they’re getting sufficient light in the winter months.

If you don’t have a sunny windowsill to house your indoor garden, grow lights can be especially useful. The proper lighting can supplement sunlight, or replace it entirely in the winter! Echter’s carries everything from full-spectrum bulbs to fluorescent grow tubes that fit in standard fixtures. Add some digital timers, and getting enough hours of light for your houseplants becomes effortless!

CHOOSE PLANT LOCATIONS CAREFULLY
Place your plants well away from winter’s chill. Don’t put them near entry doors where they will be exposed to cold drafts. Make sure the leaves of your plants living in window areas don’t actually touch the window. Minimize exposing plants to temperature extremes by placing them well away from your heating system’s air vents and also away from your fireplace.

DECREASE WATER & FOOD
Remember that indoor plants need less water & fertilizer during the short days of winter. Shorter days mean less growth, so you’ll want to water only when your plants require it.

Overwatering is the number one killer of houseplants! Frequent watering forces air from the soil and opens the door for root-killing bacteria and fungus to move in. Surface soil can dry out more quickly during winter months, but that’s not a good indicator that the plant needs water. Push your finger into the soil to determine if it is dry an inch or two below the surface—that’s when it’s time to bring out the watering can. Avoid shocking your plants’ roots by using room-temperature water in the winter. Use fertilizer at half strength every other time you water until about mid-March.

INCREASE THE HUMIDITY
Houseplants will benefit from added humidity. Humidifiers are great, but you can also use a simple-to-make pebble tray. Take an oversized saucer, add pebbles, and fill halfway with water. Then place your plant on the pebbles. As the water evaporates, add more, but don’t let the plant sit in water. 

KEEP A SHARP EYE
OUT FOR PESTS
Dry air in our winter-warm homes can create a favorable environment for pests. Keep a close eye on your plants’ leaves for signs of problems. Periodically check your plants with a magnifying glass.

Thoroughly check the undersides of leaves, stems, and branch axils. Look for common plant pests such as spider mites, mealybugs, whiteflies, & fungus gnats. Spotting problems and responding to them early can keep populations from exploding.

Just as winter is a season of rest for the outdoor garden (and the gardener!), consider it an off season for your houseplants, and give them a season of rest too. Give them the essentials, but leave things like repotting and propagation until spring when your plants begin growing actively again. Next spring, after a long winter’s nap, your plants will be ready to get growing again!