Winter Caneberry Checklist

 

Winter Caneberry Checklist 2020-21

This checklist was originally developed for blackberry growers in North Carolina. You may have to adjust your work activities either earlier or later depending on your location. For more detailed information, check the Southern Region Integrated Bramble Management Guide and the Southeast Regional Bramble Production Guide at: Link to SRSFC Caneberry IPM and Production Guides.

 

This list is intended as a general guide. However, it can be used to guide you to think about what types of activities occur at various times of the year. Check the items off as they get done. If you would like other items to be added to this list, send them to me and I will add them next time.

 

WINTER 

Plant growth and development

• Plant is not visibly growing during the winter months although many blackberries will retain their leaves through the winter
• Some floral differentiation is occurring in the flower buds (i.e. they are forming flowers)
• Low chilling cultivars can break bud in January after adequate winter chilling. You can monitor chilling hours accumulated in eight states in the eastern US by accessing this site: Link to Blackberry Chill Model

Developmental stages at this time of year as mentioned in the 2021 Southeast Regional Caneberries Integrated Management Guide are : 1. Dormant 2. Delayed dormant (swollen bud) to green tip.

 

Pruning and trellising

• Pruning should occur in late winter. However, in some areas winter ice storms can do tremendous damage to plants and trellis systems. If you produce blackberries in one of these areas, pruning can take place early winter to help avoid severe damage.
• Pruning and training videos can be found at:
• University of Arkansas Winter Blackberry Pruning
• NC State University Blackberry Pruning
• Make trellis repairs after plants have defoliated but before pruning and training.
• If you have a Rotating Arm Trellis, lay the canes to the ground. If you are in a colder region, have row covers available for protection from cold temperatures.

• Erect types
• Prune out the spent floricanes
• Cut lateral branches back to 12-18”
• Tie or weave canes to lower and upper wires
• Thin canes to 4-8 canes/ hill (4 ft spacing)
• Trailing types
• Prune out spent floricanes
• Tie or weave canes to wire so that they do not overlap
• Prune side laterals to 12-18”
• Thin canes to 6-8 hill (6-8 ft spacing)
• Primocane fruiting raspberries and blackberries
• Prune (mow) primocane fruiting types to ground level

 

Weed control

Check the 2021 Southeast Regional Caneberries Integrated Management Guide

for recommendations.

• Many summer weed problems can be best managed in the fall and winter using preemergent herbicides. Determine what weeds have been or could be a problem in your area. Check with local extension agent for cultural or chemical means to control these weeds. 

Insect and disease scouting

Check the 2021 Southeast Regional Caneberries Integrated Management Guide

 for recommendations.

·      Scout fields for insect and disease damage and remove those canes

• Remove wild blackberries and raspberries by the roots if they are within 600 ft of your planting during the winter 

Winter injury from cold

·      Injury from cold temperatures can occur to the canes and buds throughout the winter. Most often the damage occurs in the spring after the winter chilling hours have accumulated.

·      Review types of injury that can occur to the canes and buds. One site for cold injury information is the Team Rubus Blog.

 

Planting

• Take soil tests to determine fertility needs for spring plantings. 
• There are new raspberry and blackberry cultivars available each year. If you have not tried them or it is not known how they will do in your region, it is best to order a small quantity to see how well they will perform in your area
• For larger growers, prepare list of cultivars for 2022 plantings and order now. Smaller quantities of plants can be ordered in early 2021 for spring planting.
• Nursery lists can be found at:
• North American Raspberry and Blackberry Association 
• For a comprehensive nursery list for all small fruits, see Cornells Nursery Guide for Berry and Small Fruit Crops

 

Water management

• Make repairs to irrigation system (check pumps, lines, etc)
• Plants generally do not need supplemental water in winter 

 

Marketing and miscellaneous

• Order containers for next season
• Make contacts for selling fruit next season

 

 

For more detailed information, check the Southern Region Integrated Caneberry Management Guide and the Southeast Regional Bramble Production Guide online version: https://content.ces.ncsu.edu/southeast-regional-caneberry-production-guide

Or PDF version: https://content.ces.ncsu.edu/show_ep3_pdf/1607523686/22996/

 

Attend grower meetings

North American Raspberry and Blackberry Association (virtual meeting in 2021)

https://www.raspberryblackberry.com/

 

SE Regional Fruit and Vegetable  Conference (Savannah meeting is virtual in 2021)

https://seregionalconference.org/

 

 

Blackberry V-Trellis Construction

 

Blackberry V-Trellis Construction

 

This short step-by-step guide is to help new growers build a V-trellis for growing blackberries. The supplies needed and the steps to build the trellis are included. This guide was developed by a tlaented group from NC Cooperative Extension (Nancy Power and Paige Burns), Sandhills Research Station (Jermy Martin) and the Sandhills AgInnovatoin Center (David Goodwin). Their contact information is at the end of this blog post.

 

Figure 1. Blackberry V-trellis with 30" board to keep T-posts separate.

 

 

 

Supplies:

Item(s)	unit cost ($)	cost per 100’ row (rounded to nearest $)
two 8’ round, wooden end posts, 4” diameter	10	10
eight 6’ steel T-posts*	5	40
400+ feet 12-gauge galvanized wire	$105/1000 ft	11
two 2 x 4 boards, 23-30” long	$10/10 ft	4
16 T-post pin-lock insulators	$10/bag of 25	7
2 gripples	$31/pack of 20	3
floral tape	2	2
4 galvanized barbed staples or poultry staples	$4/bag of 52	0
total cost per 100’ row		$72

Tools:

-       100’ or longer measuring tape

-       spinning jenny

-       gripple tightening tool

-       pliers

-       post pounder

-       tapener

-       watering can or water bottle or hose

-       shovel

-       hammer or mallet

*If row is 100’ or less, T-posts can be up to 35’ apart in the row; if row is >100’, 25’ apart is the recommended maximum.

 

Procedures:

Wear safety glasses, especially for hammering the posts and working with the wire.

1.     End post (Figure 2).

a.     At each end of the row, insert an end post into ground about 6’ from the end berry plant by one of the following methods:

                                               i.     Pound post in with a pile driver

                                             ii.     Dig or auger hole 3’ deep

b.     Insert post and have one person hold it upright

c.     Add a little soil to the hole

d.     Pound soil in hole with the handle end of a shovel

e.     Add a little water

f.      Repeat the above three steps until the hole is full and packed in tightly (about four rounds).

Figure 2. Metal T-post brace hammered into wooden 8' end post.

2.     Row posts (Figure 3).

a.     Using measuring tape, lay T-posts out at 25-35’ intervals, starting at 2’ beyond the end plants (4’ in from end posts).  If the row is 100’ or shorter, the spacing can be up to 35’.  If the row is longer than 100’, a 25’ spacing between posts is recommended.

b.     Set up a brace post (Figure 2):

                                               i.     Insert a T-post in the ground about 16” in from the end post, with the base of the T facing the end post, angled so that it the T-post extends past the end post.

                                             ii.     Pound the T-post into the ground at an angle until the top is next to the end post.

                                           iii.     Push the top of the T-post so that it is inside the end post.

                                            iv.     Use the side of the post pounder or a mallet to pound the T edge into the wood.

                                             v.     Repeat for the other end post brace.

c.     Use the post pounder to insert the other T-posts 25-35 feet apart, in pairs, at a 20-30°  angle so that each pair makes a “V.” (See Figure 16a in Southeast Regional Caneberry Production Guide)

d.     Use pliers to attach 2 insulators on the outside of each T-post, one at the 5^th notch down on the post, and one at the 16^th notch (roughly at 4’ and a man’s knee height), with the pin at the top.  Put the pin in the hole of each insulator.

e.     Turn the L-shaped rods inward on the spinning jenny and add a roll of 12-gauge fence wire.  Turn the L-rods back outward over the wire.

f.      Pull on one end of the wire to wrap the wire around the outside of the end posts and T-posts at knee level, threading the wire through the insulators as you go.

g.     Where the ends of wire meet, thread each end through the gripple, allowing for “tails” on both ends of the wire.

h.     Use the gripple tool to ratchet the wire fairly tightly, but not as tightly as possible.  After the posts set (in a few weeks), the wires can be tightened further. 

i.      Insert a 2x4 horizontally between the T-post pair at each end of the row.  Push the board down till it fits tightly between the T-posts (Figure 1).  You may want to size and cut the board after the rest of the trellis is assembled, to make sure it fits.

j.      At the outside end of each end post, hammer a staple in far enough to hold the wire in place vertically but to allow the wire to move horizontally for tightening. 

 

Figure 3. Pow posts: 6' metal T-posts with 12-guage wire running through black plastic insulators facing outward.

If desired, the lower wires can support ¼” irrigation hose.

 

This construction guide was repared by:

Jeremy Martin, Research Operations Manager, Sandhills Research Station, 910-974-4673.

Nancy Power, Commercial Horticulture Agent, NC Cooperative Extension, Richmond County Center, 910-997-8255.

Davon Goodwin, Manager, Sandhills AgInnovation Center, 910-992-8176.

Paige Burns, County Extension Director, NC Cooperative Extension, Richmond County Center, 910-997-8255.

 

Reference:

Fernandez, G.E., E. Garcia, D. Lockwood. 2016. Southeast Caneberry Production Guide. AG-697. https://content.ces.ncsu.edu/show_ep3_pdf/1604932460/22996/