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GROWING RASPBERRIES IN CONTAINERS

   

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Raspberries are very expensive to buy in the shops even when they are in season. A few raspberry canes grown in containers will give you a reasonable crop for very little outlay.

With good care the plants should last five or six years. Raspberries are very easy to care for and suffer from few problems.


KEY DATES FOR GROWING RASPBERRIES IN CONTAINERS


Dates for summer fruiting raspberries are marked S
Dates for autumn fruiting raspberries are marked A
Dates for both are marked B
 
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
PLANT B B                  

B

PRUNE             S S   A    
FERTILISE B B
EAT           S S B A A    

SUMMER VERSUS AUTUMN FRUITING RASPBERRY VARIETIES


When buying your raspberry canes you need to decide when you want to harvest the fruit. If you want raspberries from late June for a month or so then buy the summer fruiting raspberries. If you want the fruit later in the year, from mid-August to late September, then opt for autumn fruiting raspberries.

The two types above require pruning at different times of the year so it's best to plant one type only in a container.

RECOMMENDED VARIETIES OF RASPBERRIES FOR CONTAINERS


All varieties of raspberries are suitable for container growing but it's best to avoid tall growing varieties. These will be more adversely affected by strong winds when grown in the light soil of a container.

SUMMER FRUITING RASPBERRY VARIETIES FOR CONTAINERS
Glen Ample
A strong growing raspberry which produces larger than normal fruits. The raspberries are ready for eating from early July through to August. Good disease resistance. The canes are free from spines and they grow very upright reducing the need for support. Awarded an AGM and one of the most popular varieties.

Malling Jewel
Probably the best summer fruiting raspberry for containers because they have low growing and very sturdy canes. The fruit is a typical raspberry red colour and they are exceptionally tasty. Awarded an AGM, this is our choice for containers.

AUTUMN FRUITING RASPBERRY VARIETIES FOR CONTAINERS
Autumn Bliss
This is our choice of the autumn fruiting raspberries for containers. Raspberries are produced from mid August until early October. The canes are short and sturdy requiring almost no support in a container. Good disease resistance, especially as far as aphids are concerned. The fruits are slightly larger than normal.

WHEN TO PLANT RASPBERRIES IN CONTAINERS

Bare-rooted raspberry cane The timing for planting raspberries in containers is the same as for planting in the open ground. The best time is from November to early March.

The reason for this is that the bare-rooted raspberry canes (by far the cheapest) are only sold in winter. Raspberries are sold ready planted in containers throughout the year. The picture on the left (click to enlarge) is of a bare-rooted raspberry cane.

HOW TO PLANT RASPBERRY CANES


First fill your containers with potting compost. The ideal mixture is 80% general purpose potting compost plus 20% of loam based (John Innes for example) compost. The loam based compost will give the soil some body and help the roots to secure themselves firmly.

One or two raspberry canes can be planted in a container which is 45cm / 18in or more wide. Dig out a hole wide enough to take the roots spread out slightly. The depth is important, they should be planted to the same depth as they were grown. You will be able to see a soil mark near the base of the cane, plant them to that depth.

Firm the soil around the planted raspberry cane. Support can be a single bamboo cane or three pointing inwards and joined with string at the top. As the raspberry plants grow, tie them loosely to the canes to provide some support. Summer fruiting raspberries need more support compared to autumn fruiting ones. Water the container well.

Raspberry canes planted in a container


CARE OF RASPBERRIES IN CONTAINERS

PIC GOES HERE

Raspberry plants like moist soil at all times, but especially when the fruits are forming. The frequency of watering will depend on the size of the container. The larger the container the less frequent watering will be needed. In very warm weather it may well be necessary to water daily if the fruits are forming. If you can't be around to water for a few days then move the containers to a shady position protected from wind.

This will greatly reduce the water intake of the raspberry plant. They will survive deep shade for a week without any serious damage, but may well be killed if left for a week without water in full sun.

The best water for raspberries in containers is rain water although tap water is OK as long as you aren't in a hard water area. If you are in a hard water area then invest in a water butt and use tap water sparingly.

Feeding raspberries is best done with both a long lasting fertiliser such as blood, fish and bone or bonemeal and top that up with a monthly liquid feed of a general-purpose feed.

Sprinkle a handful of long lasting fertiliser on the surface of the soil in March and June. Gently work the fertiliser into the top 2cm / 1in of the soil with a trowel and then water. The general purpose liquid fertiliser should be applied monthly at the concentration specified on the pack.

Raspberry plants are frequently strong growers and after a year or two growing in a container they will start to produce more than one stem. This can result in the container becoming overcrowded and you need to keep an eye on the situation. If the raspberries are autumn fruiting and multiple stems appear (keep the number of stems to two per 45cm / 18in pot) then select the strongest growing and cut the remainder back to ground level. check your plants once a month from April onwards for multiple stems.

Preventing summer fruiting raspberries from over-crowding the container is a little more complicated. Bear in mind with summer fruiting raspberries that they produce fruit on canes which started growing last year. So in the summer when last year's cane is starting to produce fruit you will also need to have one or two more canes which are growing for fruit production next year.

Pruning aside (see below) that's all the care that your raspberry plants will need. The containers do of course need to kept weed free. Position your container in full sun or part shade. If your area is windy then position the container where the plants will be protected from the worst of the wind damage.

PRUNING RASPBERRIES IN CONTAINERS

Pruning raspberries is different for autumn and summer fruiting varieties because autumn fruiting ones produce raspberries on canes which grow this year. Summer fruiting raspberries produce fruit on canes which started growing the previous year.

If you have autumn fruiting raspberry canes then pruning is simply cutting the canes back to 3cm / 1in above soil level in mid-February. It sounds harsh but this will encourage them to spring back to life in mid-March for another year's crop of delicious raspberries!

Summer fruiting raspberries should be pruned as soon as they stop producing fruit. Cut all canes which have produced fruit this year to ground level. Select one or two canes which haven't produced fruit this year and prune all the remaining ones to ground level. It's relatively easy to distinguish between canes that have produced fruit this year from those that haven't. The new canes will have light green stems and they will generally look to be growing well. the canes that have produced fruit this year will be darker in colour and generally look a bit tired out!

HARVEST RASPBERRIES

Raspberries are best harvested when they are dry and the best time of day is either in the morning or evening when the temperatures are cool. This will help them last longer stored in the fridge.

To freeze raspberries lay them out one a shallow tray (in one layer only) and let them freeze. If you are lucky enough to have lots then bag up the frozen raspberries, place them back in the freezer and start freezing the next batch in the same way. Bagged up, they will keep in the freezer for at least three months. When you defrost raspberries they will never have the texture of fresh raspberries but that's not a problem if you wan to use them in cakes, sauces or drinks.

One tip for making frozen raspberries look good is to remove them from the freezer only just before you need them. They will stay in shape for a couple of hours and initially will have a delightful sugar-frosted look - see the picture of the Chocolate and raspberry cheesecake below.

Good recipes for raspberries (frozen and unfrozen) can be found at the following links:

Chocolate and Raspberry Cheesecake

Baked Raspberry Cheesecake
 

Eton Mess


PESTS AND DISEASES

Raspberries grown in containers suffer from the normal pests and diseases which affect those grown in the open ground. Rather than detail them here we provide a link here to a good page that deals with how to identify them and how to treat them. Remember to come back here when you have read the information!

READER COMMENTS AND QUESTIONS ABOUT THIS PAGE

Five star rating
07 December 2014
From: Shyam Sharma
I am first time planter and needed this info. Thanks.
Five star rating
08 June 2014
From: Sharon
I have avoided planting raspberries in my garden because they grow much TOO well in our climate and can become a nuisance. Someone suggested containers for raspberries... and it sounds like a really good idea. I have two questions though. First, can the pot take some freezing with the roots above ground in the container or would it be better to heel it in for the winter? Second is approximately how much fruit will one pot with two canes in it produce? I'm thinking not really very much and 3 or 4 pots would be a good amount for two people. We would probably like to eat them fresh while they are producing well and freeze them when there are too many to eat.
 
ANSWER: I live in the Midlands and they overwinter in containers just fine. I do move them close up against a hedge out of the wind during winter, against a house wall would do even better. In my experience they produce just as much fruit as canes planted in the ground. Four pots should keep you handsomely in raspberries! Three pots would be my guess but it depends how many you can eat. Remember, you will crop more in year two compared to the first year.
Four star rating
20 April 2014
From: Shyam Sharma
Very good info for a first time grower as myself.
Five star rating
10 August 2013
From: Barbara
Very very helpful. All the info I needed in one place!
Five star rating
25 July 2013
From: Mel
Clear, detailed and informative.
Five star rating
5 June 2013
From: Sue
Very helpful
Five star rating
21 April 2013
From: Grace
Helpful, all the info I need to get started!
Five star rating
17 April 2013
From: Not Given
Planted my first one! :)
Five star rating
16 April 2013
From: Not Given
Just what I was looking for.
Five star rating
07 February 2013
From: Pat
Great information!

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