Olallie Blackberry | Large Flavorful Trailing Berry Vine

Olallie Blackberry

5 Gallon

$89.00

1/5

Olallie Blackberry

Blackberry 'Olallie'

A vigorous, high-yielding blackberry with exceptionally large berries and intense wild blackberry flavor.

$89.00

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Bay Area–Based Nursery

We specialize in plants grown and delivered in their original pots and soil.
Because of their size and weight, our plants are not suitable for long-distance shipping and are delivered locally to ensure health and quality.

While delivery is limited to our local service area, we’re happy to support garden design and plant selection remotely.

For local plant professionals, we’re always glad to connect and explore ways to support your customers.

Olallie Blackberry is a classic, high-yielding cultivar celebrated for its exceptionally large, glossy berries and rich, complex flavor. Developed by the USDA-ARS in Oregon in the 1950s, this vigorous hybrid combines the best traits of Loganberry and Youngberry, resulting in a berry with the intense, wild blackberry taste prized by home gardeners and commercial growers alike . It produces an abundance of large, elongated, purple-black berries with a sweet-tart balance and a thin waxy bloom, perfect for fresh eating, jams, pies, and preserves. As a semi-erect, trailing vine, it requires a trellis or other support for optimal growth and fruit production. With its reliable yields, exceptional flavor, and adaptability to a range of climates (USDA zones 6-9), it remains a beloved choice for the home orchard and edible landscape.

Knowing how we measure the size?

When browsing our plants, you may notice size terms such as Gallon, Multi, or Stand. These describe how a plant is grown, containerized, or structured at the time of sale — not just its height. Understanding these terms will help you choose the right plant for your space and expectations.

🌱 Gallon Size (Container Size)

Gallon refers to the size of the nursery container the plant is currently growing in (e.g. 1 Gallon, 5 Gallon, 15 Gallon).

A larger gallon size generally means:
- A more established root system
- A sturdier plant
- Faster visual impact after planting
Example:
- 5 Gallon: Ideal for residential gardens, easy to handle, good balance of value and maturity
- 15 Gallon: More mature, provides quicker results in the landscape

Note: Gallon size does not guarantee a specific height, as growth varies by species.

🌳 Multi (Multi-Trunk / Multi-Branch Form)

Multi indicates the plant has multiple trunks or main stems growing from the base.

Commonly used for:
- Ornamental trees
- Feature plants
- Japanese maples, olives, crepe myrtles, etc.
Why choose Multi:
- Fuller, more sculptural appearance
- Strong visual presence even at younger ages
- Popular for design-focused landscapes

🌲 Stand (Single-Trunk / Standard Form)

Stand (short for Standard) refers to a single, dominant trunk with a raised or naturally formed canopy.

Commonly used for:
- Shade trees
- Street trees
- Orchard and structural plantings
Why choose Stand:
- Clean, classic tree form
- Easier clearance for walkways and lawns
- Preferred for long-term structure and uniformity

🌿 Choosing the Right Size

If you want instant impact → larger Gallon, Multi form
If you want long-term structure → Stand form
If you want flexibility and value → mid-size Gallon containers

If you’re unsure which size or form fits your project, our team is happy to help you select the best option based on your space, timeline, and design goals.

Foliage & Flowers: Palmate, compound leaves with 3-5 oval, serrated, glossy dark green leaflets; clusters of small, white to pale pink, five-petaled flowers in spring .
Fruit: Large, elongated, glossy, purple-black aggregate berries with a thin waxy bloom; sweet-tart, intensely rich, wild blackberry flavor; ripens mid-season (typically July) .
Mature Height: 4-6 ft (canes can trail longer)
Mature Spread: 4-6 ft (spreading by canes)
Growth Rate: Fast
Hardiness Zones: USDA 6-9
Light Requirement: Full sun (essential for best fruiting)
Core Benefits: Exceptionally large berries, intense wild blackberry flavor, high yields, vigorous grower, reliable performer
Best Uses: Home orchards, edible landscapes, trellises and fences, fresh eating, jams, pies, preserves, canning

Q: How does Olallie Blackberry differ from other blackberry varieties?
A: Olallie is a Loganberry × Youngberry hybrid, giving it a uniquely intense, wild blackberry flavor and an elongated berry shape. It is known for its exceptionally large fruit size and high yields . Unlike everbearing varieties like 'Baby Cakes', Olallie is a floricane-fruiting variety that produces one large mid-summer crop on second-year canes .

Q: Does Olallie Blackberry require a trellis?
A: Yes. It has long, trailing canes that require a sturdy trellis, fence, or other support to keep plants organized and fruit accessible. A simple two-wire trellis system is commonly used .

Q: When does it fruit, and how long is the harvest season?
A: Olallie is a mid-season blackberry, typically ripening in July . The harvest period lasts about 3-4 weeks, producing a concentrated, abundant crop perfect for canning, preserving, and fresh eating .

Q: How do I prune Olallie Blackberry?
A: Prune in late winter or early spring using a floricane-fruiting system: 1) Remove all dead, second-year canes (floricanes) that fruited the previous year. 2) Select 5-7 of the healthiest, most vigorous first-year canes (primocanes) to tie to the trellis. 3) Remove the remaining primocanes at ground level. The selected canes will fruit the following summer .

Q: Is it self-pollinating?
A: Yes, Olallie is self-fertile and will produce fruit on its own. However, planting multiple plants can increase yields through cross-pollination .

Q: Is it thorny or thornless?
A: Olallie Blackberry typically has moderately thorny canes. The thorns are not as aggressive as some wild varieties but are still present. Gardeners sensitive to thorns should wear gloves when handling and pruning .