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Blackberry, Triple Crown

Buy Any 3 Fruit or Berry Plants & Save 20%
Buy Any 3 Fruit or Berry Plants & Save 20%. Cannot be applied to previous orders. Limited time only. While supplies last.

Short Description

Thornless plants produce sweet blackberries over 5 weeks.

Full Description

These large, juicy-sweet, blue-black berries grow abundantly for five of your summer's sweetest weeks. Enjoy the firm, nutritious berries as a snack or instant dessert; and they're superb in a pie, mousse or sorbet. The thornless blackberry plants are upright, orderly and easy to maintain. Growing 4-8', the plants form a sturdy hedge with the canes supporting pounds of fruit without a trellis.
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Item#: 19987
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$13.95
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Item#: 19933
Order: 5 Bare Root Plants
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$34.95
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Blackberry, Triple Crown
Blackberry, Triple Crown, , large
Item #: 19933
5 Bare Root Plants
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Product properties

Zone This refers to the USDA hardiness zone assigned to each part of the country, based on the minimum winter temperature that a region typically experiences. Hardiness zone ranges are provided for all perennial plants and you should always choose plants that fall within your range.

5-8

Sun The amount of sunlight this product needs daily in order to perform well in the garden. Full sun means 6 hours of direct sun per day; partial sun means 2-4 hours of direct sun per day; shade means little or no direct sun.

Full Sun

Height The typical height of this product at maturity.

48-96 inches

Spread The width of the plant at maturity.

24-36 inches

Life Cycle This refers to whether a plant is an annual, biennial or perennial. Annuals complete their life cycles in one year; biennials produce foliage the first year and bloom and go to seed the second year; perennials can live for more than two years.

Perennial

Growth Habit The genetic tendency of a plant to grow in a certain shape, such as vining or bush like.

Erect

Plant Shipping Information

Plants begin shipping week of:

Sep 11, 2017

(Click here for Fall shipping schedule)

Restrictions:

Items 19933, 19987 cannot ship to: AA, AE, AK, AP, AS, CN, FM, GU, HI, MH, MP, PR, PW, VI
See all Burpee plant shipping restrictions for your state

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Fall Planted Fruits
Fall is an ideal time to plant fruit plants. Plants will establish strong root systems and get a jump on spring growth.
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  • Blackberry Plants

    Blackberry Plants
    Start Indoors Start Indoors Starting seeds indoors is called Indoor Sow or Indirect Sow and these dates are when to sow seeds indoors in the spring or summer
    Transplant Transplant When to transplant bulbs or roots in the garden for spring
    Start Outdoors Start Outdoors Starting seeds outdoors is called Outdoor Sow or Direct Sow and these dates are when to sow seeds outdoors in the spring or summer
    Start Indoors Fall Start Indoors Fall Starting seeds indoors in the fall called Indoor Sow or Indirect Sow and these dates are when to sow seeds outdoors in the fall
    Transplant Fall Transplant Fall Transplant Fall-When to transplant bulbs or roots in the garden for fall
    Start Outdoors Fall Start Outdoors Fall Starting seeds outdoors in the fall is called Outdoor Sow or Direct Sow and these dates are when to sow seeds outdoors in the fall
    First Date: Mar-28 - Last Date: May-16
    First Date: Sep-17 - Last Date: Oct-29
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  • Blackberries may be planted as bare root or potted plants.
  • Choose a well-drained, sunny location with no standing water. Prepare the soil before planting by mixing compost or other organic matter in with the soil. Work the soil deeply.
  • Space canes 3 feet apart in rows 6 feet apart. Dig each hole to twice the size of the root mass.
  • Plant blackberries 100 feet away from red raspberries.

Planting Bare Root Plants:

  • Before planting, trim very long or broken roots.
  • Cut back top growth to 6 inches.
  • Set roots 1-2 inches deeper than formerly grown.
  • Back fill with loose soil. Gently press soil in around the root ball. Transplants need good root-to-soil contact. Do not press too hard because that can cause soil compaction and root damage.
  • Gently water around the root ball to settle the soil and drive out air pockets.
  • After planting be sure to mark the plants with plant labels so you know where they are and what varieties they are.
  • Mulch with 2-3 inches of compost of pine needles to retain moisture and prohibit weed growth.

Planting Potted Plants:

  • Set the plant in the hole at the same depth as it was growing in the pot.
  • Backfill the hole and press firmly around the base of the planting.
  • Water deeply. The water will seal off any air pockets around the root ball.
  • After planting be sure to mark the plants with plant labels so you know where they are and what varieties they are. 
  • Mulch with 2-3 inches of compost of pine needles to retain moisture and prohibit weed growth.
  • Keep weeds under control during the growing season. Weeds compete with plants for water, space and nutrients. Control them by either cultivating often or use a mulch to prevent their seeds from germinating.
  • Add mulch each year as needed.
  • Keep plants well-watered during the growing season, especially during dry spells. Plants need about 1-2 inches of rain per week during the growing season. It's best to water with a drip or trickle system that delivers water at low pressure at the soil level. If you water with overhead sprinklers, water early in the day so the foliage has time to dry off before evening, to minimize disease problems. Keep the soil moist but not saturated.
  • In the spring, before leaves sprout, apply a granular fertilizer following the instructions on the label. Most new growth will come from the plant’s crown under the soil. Plants use a lot of energy in spring when growth begins, so do not let plants dry out.
  • Remove all wild brambles near cultivated varieties to prevent virus diseases.
  • Each year cut to the ground all but 5 or 6 of the most vigorous canes of each plant about 6 inches apart to improve fruit production. Prune these to about 30 inches to encourage lateral branches. They will bear fruit the following year, and should be cut to the ground after harvest.
  • Repeat these steps each year:
    • Select the most vigorous canes
    • Cut them back to 30 inches
    • Prune back the previous year’s laterals
    • Remove canes after laterals have borne fruit
  • NOTE: For Primocane Bearing Blackberries: These bear fruit twice on the same cane. Prune new shoots each year as for standard blackberries. New shoots bear fruit at the tips in fall, and further down on the cane the following spring. Cut back old canes after the second crop is harvested.
  • Remove and destroy old canes immediately; rake up and remove fallen leaves and fruit to help prevent fungus diseases. Check with your local Cooperative Extension Service for pest controls recommended for your area.
  • Blackberries may not need support when they are properly pruned. To prevent wind damage and to make harvesting easier, canes may be individually tied to two parallel wires strung between posts at either end of the row. 
  • Fruiting season is in summer: July, August or September. Fruit will not continue to ripen after picking so be sure to wait until fruit is ripe before picking. The fruit will ripen from red to black, but do not pick them as soon as they turn black, wait 3-4 days and pick when the color has a dull appearance. These will be the sweetest fruit. Pick in the morning or evening, when temperatures are coolest.
  • Expect to harvest at least twice a week for several weeks.
  • Fruit damages easily so handle with care. Store in a shallow container in the fridge as soon as possible after picking.
  • Wash blackberries and allow them to dry on a clean paper towel for 10-20 minutes before storing.
  • Fresh blackberries last a day or so, but can be frozen or used for preserves.
Zone
5-8
Sun
Full Sun
Height
48-96 inches
Spread
24-36 inches
Life Cycle
Perennial
Growth Habit
Erect
Food Use
Edible Fruit, Sauce
Genus
Rubus
Ornamental Use
Beds, Borders
Planting Time
Fall, Spring
Blackberry, Triple Crown is rated 3.1 out of 5 by 20.
Rated 5 out of 5 by from Wasn't sure what berry survived, but... I bought three berries plants last year from Burpee, only one survived (my fault; I overcrowded the planting area). Silly me took the name tags off the plants, so I had no idea which one I was left with. I am so happy it was the Blackberry. The vines are easy to wrap around our house porch. The berries are HUGE; bigger than my thumb in some cases. The bio is right; we had about 5 great weeks of berry production. My toddler would eat them straight off the vine. I might have eaten too many; be careful they can cause digestion problems, if you know what I mean. Thankfully, the birds stayed away and we should get another year of production from these branches. New splits are coming in nicely for future years; will prune as recommended. Delicious!
Date published: 2017-08-11
Rated 2 out of 5 by from Not happy Only 2 of the 5 bare root plants lived. Planted in raised bed same soil same water
Date published: 2017-07-25
Rated 1 out of 5 by from Not worth the money I bought 5 of these about two months ago 4 of the 5 are showing no life at all, what a waste of time
Date published: 2017-07-18
Rated 3 out of 5 by from Wait and see. I planted these and royal rasberries from Burpee as per instructions. Raspberries came up in a week and now have berries. The blackberries, however, took 3 months to come up and only 2 out of five did. Will have to plant more. Maybe they'll take off next year.
Date published: 2017-07-15
Rated 1 out of 5 by from Perhaps a bad choice for my area. One of the five canes arrived spendely and weak looking. I prepared them as directed then installed them in my prepped bed then a few weeks later four of the five leafed out. Unfortunately within 2 months only one remains alive.
Date published: 2017-07-15
Rated 1 out of 5 by from Dead plants Put 5 in the ground, ttimmed as recommended...got nothing.
Date published: 2017-07-15
Rated 5 out of 5 by from My first thornless blackberry We received some shoots from my parents of standard blackberries about 10years ago. Upon planting we thought they would never survive. Not only did those 5 plants survive, but they took over. The only word I can use to describe is invasive. No matter what we did they continued to pop up EVERYWHERE! And the thorns were worse then roses. We chose the triple crown because they were thornless. We figured they would have to be easier to control. So far so good. They are all growing strong, currently in 2gal grow bags. No fruit yet but I anticipate we will have a few berries next year, just based on their size. I will update again next year. If given the choice, I would highly recommend going with thornless.
Date published: 2017-07-15
Rated 1 out of 5 by from Very Disappointing We bought five of these and I followed the directions perfectly. Only one has made it and I'm not even sure it is doing that well. We wasted our money.
Date published: 2017-07-15
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