How to Grow Boysenberry
Boysenberry At a Glance
Difficulty
Easy
Category
Berry
Sun Exposure
Full Sun
Frost Tolerance
Frost Hardy
Cold Hardiness
Survives to -18°C
Plant Family
Rosaceae
Growing Season
Warm Season
Plant Lifecycle
Perennial
How to Start It
★ Recommended for beginners
Buy bare-root or potted canes and plant them in early spring, about 3 weeks before your last frost. Set them at the same depth they grew before, about 180 cm apart, next to a sturdy trellis or fence. Cut the canes back to about 30 cm after planting to push strong new growth.
Boysenberries are a cross of blackberry and raspberry, with big, soft, wine-red berries you rarely see in stores. A single plant fruits on its own, and you pick your first real crop in the second summer. They are less hardy than raspberries, so in cold areas lay the canes on the ground in late fall and cover them with mulch.
When To Start
Boysenberry needs warmth. Wait until your last frost has passed and the soil has warmed before sowing.
We do not have exact sowing dates for this one yet.
When should you plant Boysenberry?
Your planting dates depend on your local climate. Sign up and add your location to unlock personalized dates.
Your Boysenberry Planting Window
Start planting
May 15, 2026
Last chance
Sep 10, 2026
Your Boysenberry Calendar
Set your location to turn these into exact dates and reminders.
Plant boysenberry canes beside a sturdy trellis
3 weeks before your last frost
Cut old boysenberry canes to the ground, tie in new ones
Around your first frost· every year
Pick ripe boysenberries every 2 to 3 days
90 days after your last frost· every year
Water your new boysenberry plants well while they settle in. Deep and slow is best.
About 1 days after you plant it
How are your boysenberries settling in? Water deeply each week and guide new canes onto the trellis.
About 30 days after you plant it
Your boysenberry is growing the canes that will fruit next year. Mulch around the base to keep the roots moist.
About 90 days after you plant it
The Journey Ahead
Boysenberry's Lifecycle
Seedling
Mature Plant
Seed Production
Step 1
Prepare Your Space
180 cm
Plant Spacing
240 cm
Row Spacing
Vertical Growing
Yes: Trellis.
Succession Planting
No.
Good Companions
Bad Companions
Step 2
Planting & Sprouting
Growing Tips
- 1Plant boysenberries in full sun for the sweetest berries.
- 2Mix plenty of compost into the soil and keep a layer of mulch over the roots.
- 3Water deeply once a week, and more while the berries are swelling.
- 4Spread fresh compost around the plants each spring as their food.
- 5Berries grow on canes in their second year, so tie this year's new canes to one side of the trellis and the fruiting canes to the other, and cut the old canes to the ground right after harvest.
- 6Cover the plants with netting as the berries colour, or birds will get them first.
Seedling Phase
Step 3
Growth & Maturity
150 cm
Mature Height
200 cm
Mature Width
Pests to Watch For
Diseases to Watch For
Mature Plant
Step 4
Harvesting
Harvest Window
30 days
When to Pick
Pick when berries are deep wine-purple and soft, early to midsummer
How to Harvest
- 1Boysenberries are ripe when they turn deep maroon, almost black, and feel soft.
- 2A ripe berry slips off easily with its soft core inside, unlike a raspberry.
- 3Pick every 2 to 3 days in the morning, since they ripen quickly and spoil fast.
- 4Handle them gently and do not wash them until you eat them.
- 5Keep them in the fridge for 2 to 3 days, or freeze them in a single layer on a tray and then bag them.
Step 5
Saving Seeds
Seed Production
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