Image coming soon
Growing Inspiration
Inspiration for future Agardeni growing environments.
Cultivar
Rubus
The Columbia Star blackberry is a highly regarded thornless variety valued for its large, uniform, and flavorful fruit that holds up well for fresh eating or preserving. Its semi-trailing canes are vigorous and productive, making it suitable for training onto trellises in home orchards or large garden spaces. This cultivar offers a balance of garden performance and culinary quality, producing sweet, medium-to-large berries consistently throughout the harvest season.
Columbia Star is a productive thornless blackberry known for its high-quality, flavorful fruit and semi-trailing growth habit. It is an excellent choice for home gardens looking for reliable harvests.
Marketplace checkout
Choose a plant pack
Plant quality preference
Choose the plant quality you are willing to accept for this order.
Grade B never means diseased, pest-infested, dying, materially mislabeled, or otherwise unhealthy plant material.
18-plant pack · Ship
$89.74 total
576 plants available · max 32 packs
Shipping & Delivery
Orders generally ship within 3–7 days after purchase. Agardeni gives priority to USPS Priority Mailfor standard live-plant shipments when practical.
USPS Priority Mail typically has a 2–3 day delivery objective after shipment, but delivery times are not guaranteed.
Weather & Temperature Risk
Agardeni ships from Florida and does not monitor destination temperatures nationwide. Customers are responsible for considering local weather conditions and retrieving packages promptly after delivery.
Agardeni is not responsible for plant damage caused by freezing temperatures, frost, excessive heat, or prolonged exposure to extreme temperatures at the destination.
Inspect live plants promptly after delivery. Eligible plant-condition claims must be submitted within 48 hours of confirmed delivery.
Secure Stripe checkout · current test/sandbox configuration remains unchanged
Cultivar Story
Image coming soon
Inspiration for future Agardeni growing environments.
Image coming soon
A realistic representation of the starter plants offered in 18, 36, and 72 plant quantities.
Image coming soon
Grow your aspirational plan into an inspirational garden.
Image coming soon
A closer look at the fruit, flower, foliage, or mature defining characteristics of this cultivar.
Image coming soon
Begin with a starter plant and establish it in a larger pot using quality potting soil with beneficials and fertilizer.
Image coming soon
Start with real plants. Plan with current marketplace availability. Grow your aspirational garden.
Cultivar Video
AgardeniCultivar Video Coming Soon
See this cultivar from starter plant to aspirational garden.
Plant Profile
Key growing information first, with the complete reviewed cultivar profile available when you want it.
Sun
Full sun for optimal fruit production and plant health.
Water
Consistent moisture is required, especially during the fruit-ripening phase; avoid waterlogged soil.
Mature size
Canes typically reach 5-7 feet in length.
Hardiness
USDA zones 6-9
Growth habit
Semi-trailing, vigorous, thornless canes.
Plant type
fruiting shrub
Care, size, flowering, climate, soil, health, and additional reviewed data.
Good to know
Provide a sturdy trellis or support system for the canes to keep fruit off the ground and facilitate easier harvesting.
Requires a certain number of chill hours to break dormancy; adaptable to moderate heat but requires consistent water in high heat regions.
Produces sweet, glossy black fruit in mid-summer; thorns are absent on mature canes.
Everyday care, growth, feeding, and pruning guidance.
Sun / light
Full sun for optimal fruit production and plant health.
Growth rate
Moderate to fast during the active growing season.
Fertilizer
Apply a balanced, slow-release fertilizer in early spring as new growth emerges.
Pruning
Prune back fruited canes after harvest; remove weak or damaged canes in late winter to encourage new, productive growth.
Care notes
Provide a sturdy trellis or support system for the canes to keep fruit off the ground and facilitate easier harvesting.
How the plant grows and the space it needs at maturity.
Mature size
Canes typically reach 5-7 feet in length.
Growth habit
Semi-trailing, vigorous, thornless canes.
Spacing
Space plants 4-6 feet apart in rows to allow for adequate air circulation.
Flowering, fruiting, pollination, bloom, and harvest behavior.
Flowering / fruiting
Produces sweet, glossy black fruit in mid-summer; thorns are absent on mature canes.
Cold, heat, chill, and regional growing considerations.
Hardiness zones
USDA zones 6-9
Temperature
Requires a certain number of chill hours to break dormancy; adaptable to moderate heat but requires consistent water in high heat regions.
Moisture, drainage, soil, and pH preferences.
Watering
Consistent moisture is required, especially during the fruit-ripening phase; avoid waterlogged soil.
Soil
Rich, well-draining soil with organic matter is preferred to support vigorous growth.
Soil pH
5.5-6.5
19 additional reviewed fields from this Plant.id.
Container Growing
Can be grown in large containers with appropriate support, though in-ground planting is generally more productive for mature blackberry bushes.
Family
Rosaceae
Foliage Look
Lush, dark green, serrated, compound leaves on flexible, green-to-reddish canes.
Foliage Rules
Leaves are compound, usually with five leaflets, displaying deep green color and characteristic serrated edges.
Fruit Flower Look
Clusters of medium-to-large, sweet, glossy black berries with a firm, uniform, conical-to-cylindrical shape.
Fruit Flower Rules
Fruit is typically absent on juvenile starter plants; only depict mature, glossy black berries on mature, established canes.
Growth Habit Rules
Do not depict this as an upright tree or a compact shrub; it is a semi-trailing cane fruit that requires a support structure.
Mature Plant Look
A vigorous, leafy, semi-trailing bush supported on a sturdy trellis, laden with large, glossy, black, cylindrical berries.
Mature Stage Morphology
Mature plants display a dense mass of long, vigorous, thornless canes with compound, serrated foliage and abundant clusters of berries.
Morphology Rules
Ensure the absence of thorns is highlighted in botanical descriptions for this specific thornless cultivar.
Plant Faqs
Does Columbia Star need a trellis? Yes, this variety has a semi-trailing growth habit and benefits significantly from a support system. Are these blackberries thornless? Yes, Columbia Star is a commercially popular thornless cultivar, making it much easier to harvest. When do these berries ripen? The fruit typically matures during mid-summer, depending on your local climate zone. Can I grow this in a pot? It can be grown in a large container with a trellis, but it will require consistent watering and feeding.
Root Look
Healthy, white-to-tan fibrous root system filling the plug cell.
Soil Look
Dark, nutrient-rich, porous, well-draining garden soil or professional potting media.
Starter Stage
Small, young blackberry plants with active, green stem growth and multiple healthy leaves.
Starter Stage Morphology
Young plants feature serrated, bright green leaves and supple stems with developing roots suited for transplanting.
Video Voiceover Script
Welcome to Agardeni, where inspiration for gardening helps us imagine how and where we will grow Columbia Star Blackberry. This is Columbia Star Blackberry, available as 18, 36, and 72 plant starter trays through the Agardeni Marketplace. Let Columbia Star Blackberry become part of your aspirational plan, helping you imagine the future fruit-bearing trellis you want to create. These berries are prized for their exceptional flavor and glossy, black appearance that makes them perfect for fresh picking and enjoying directly from the vine. Establish your starter plug in a four-inch pot with quality potting mix, then move it to a permanent trellis or in-ground location once it is strong enough to thrive. Find your inspiration with Agardeni. Explore real plants and real availability. Start. Plan. Grow.
Youtube Tags
Blackberry Rubus Columbia Star Thornless Blackberry Edible Garden Fruit Garden Agardeni Home Orchard Berry Gardening Starter Plants Fruit Production
Youtube Video Summary
The Columbia Star blackberry is a premier thornless choice for home gardeners, offering large, flavorful fruit on vigorous, manageable canes. Learn how to establish this reliable producer in your own edible landscape for years of harvests.
Youtube Video Title
Growing Columbia Star Thornless Blackberries at Home
Coming Soon
Possible future seller options for 2.5-inch, 4-inch, and 1-gallon finished plants.