Boysenberry (Rubus ‘Boysen Blackberry’)

Boysenberry

Dark purple jewels, delicious Boysenberry Plants (Rubus ‘Boysen Blackberry’) is a hybrid plant that’s related to the Blackberry, Raspberry, Loganberry, and Dewberry plants but is top to bottom an easy-care bramble! Cold and heat tolerant in USDA growing zones 5 through 9, these deciduous shrubs can grow to 5-6 feet in height and 4-6 feet in width.

This vining-type of bramble explodes in drifts of small white flowers in the spring much to you and your pollinator’s delight! The thin, thorny canes form from the roots and create rambling mounds that clamber over each other when left to their own devices. Fast-growing, these brambles fill out with those luscious, faceted fruit that ripens around July.

Well-known for producing large, juicy, dark purple berries, comparable to Raspberries in flavor, these luscious berries offer the dark color and intense sweetness of a Blackberry with the tartness of a Raspberry. Great for baking delectable desserts and making wonderful jams! Not typically found in grocery stores due to their fragility, having one of these self-fruitful shrubs in your backyard. The Boysenberry was developed by Rudolph Boysen in California in the 1920s and has been a popular backyard flowering and fruiting bush ever since!

Planting and Application:

Boysenberry bushes are thorny bramble types known as trailing and will need a support system or trellis. Give them a fence, arbor, or framework to train the brambles on. Boysenberries can be successfully grown in pots and planters as long as they have proper support.

When left to grow as they wish, these are prime wildlife and bird-friendly habitat and feed a wide range of creatures! The dense and thorny brambles clamber over each other to create shelter and nesting, plenty of food for songbirds and their young. Use these thorny barriers along your property lines to halt trespassers. The spring flowers and luscious berries will be admired by anyone you are screening off with these edible ornamental landscaping plants.

  • Pretty White Blossoms in Spring
  • Sweet Tart Berries in July
  • Vining Thorny Canes
  • Bird & Pollinator Friendly
  • Screening, Hedges, Containers & Wildlife Habitat

Tips for Care:

Boysenberry bushes form both Primocanes and Floricanes with the latter being the fruit-bearing canes. Plant in enriched well-drained soil in full sun, receiving a minimum of 6 hours of direct sun a day. Provide consistent moisture all growing season and a 3-4 inch layer of arborist mulch.

Pruning Boysenberry takes a bit of observation. These plants flower and fruit on last year’s canes and these are the new young and green stems that were produced the season before. Once those canes are done being harvested, they can be cut down to the ground removing the cane that fruited leaving the new young shoots that developed from the root for next year’s harvest.

  • Full Sun
  • Consistent Moisture & Mulched Beds
  • Well-Drained Enriched Soil
  • Requires Strong Support
  • Prune Old Canes After Fruiting/Late Winter
  • ~500 Chill Hours

Luscious fruit and highly nutritious, the Boysenberry bush will be a fantastic addition to your berry orchard this year!

Boysenberry (Rubus ‘Boysen Blackberry’) Details

Common name Boysenberry
Botanical name Rubus 'Boysen Blackberry'
Plant type Deciduous
Hardiness zone 5-9
Growth rate Fast
Harvest time Summer
Height 5 - 6 ft.
Width 4 - 6 ft.
Sunlight Full Sun
Moisture Medium
Soil condition Well Drained Soil
Pollinator-friendly Yes
Pruning time After Fruiting
Flower color White