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Plant Care
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Julie Bawden-Davis
Plant Care Guide

Rubus sp. 'Jewel Black Raspberry'

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  • General Information
  • Buy
  • Plant
  • Sow Seeds
  • Fertilize
  • Water
  • Prune
  • Mulch
  • Protect
  • Pest/Disease Inspection
  • Treat for Pest/Disease
  • Transplant
  • Propagate
  • Harvest
  • Special requirements

General Information

Edible purple/blue raspberry that produces round, firm berries and high yields. Does best when the spring is cool.

Sunset Zones

USDA Zones

Web Link

Buy

When's the best time to buy this plant? When can you buy these from seed (if you can)? When is it usually available? What are things to look for when you're buying it? Or anything other tidbit of information you can share!

January
Buy bareroot when available in the nursery or from an online merchant.

Plant

When's a good time to plant this plant or bulb? Any special planting instructions?

January
Plant when dormant in a light shade location that is well-draining. Plant in raised beds if the soil is heavy clay. Soil pH should be on the acidic side (6 to 6.5). Avoid planting where you grew tomatoes, eggplant, potatoes or peppers within the last three years, as these plants tend to infect the soil with verticillium wilt. Set plants 2 1/2 to 3 feet apart in rows that are 6 to 10 feet apart. Cut canes back to 4 to 6 inches high.

Sow Seeds

When can you plant these seeds? When's the best time? Can you start them indoors and move them out? Do they have any special requirements?

Fertilize

When should you fertilize this plant? Which kind of fertilizer do you recommend? Should you use different fertilizers at different times of year?

Water

Is there a time to reduce or increase watering? Any special requirements? Things to avoid during certain times of the year?

Prune

When's a good time to prune this plant? How about deadheading, pinching back, trimming or any other grooming? Any special requirements?

January
For summer bearing raspberries: After planting, don't prune for the first year. Once they fruit, cut the canes back to the ground. The second year, canes will develop around the crown. Prune out everything but 7 to 10 of the strongest canes and attach them to the trellis. Before new growth appears in spring, cut canes back to 5 feet, which will encourage them to grow laterally.
For everbearing raspberries: The first fall, they will produce fruit on the top 1/3 of the plant. After harvest, remove the portion of the plant that produced berries and let the lower part remain to produce the spring crop. In spring, after the canes have completely fruited, remove them completely. New canes that appear will produce the next crop.

Mulch

Does this plant need to be mulched? Are there specific types of Mulch which are better for this plant? How much?

January
Maintain a 2- to 3-inch layer of shredded bark in the planting bed, which will keep the soil moist and cool.

Protect

When and how should you protect this plant from birds, deer, rabbits? Does this plant need be covered, or wrapped or painted or moved?

Pest/Disease Inspection

What are the common problems this plant will face and when should you look for them to appear?

January
Check for signs of cane borers.

Treat for Pest/Disease

How do you treat the common problems for this plant? What products or concoctions or natural means do you use? Any special requirements?

January
Spray plants when dormant with lime sulfur to prevent fungal disease, as well as control cane borers and spider mites.

Transplant

When's the best time to dig up and transplant this from one spot to another? (This is different than planting). Any special requirements?

Propagate

When's a good time to divide, take cuttings, layer or propagate this plant. Any special requirements?

Harvest

When's a good time to harvest this plant? What's the best way to harvest? Are there special requirements or features?

Special requirements

Any other requirement for this plant? Is there anything that doesn't fit into the other care categories?

January
Raspberries do best when trained on a trellis. String heavy wire between posts and train lateral side branches along wire.