cajokid48
mansfield, notts
Posts: 6
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| Posted: Thu Dec 10, 2009 7:18 pm Post subject: Question about growing Sweet Potatoes |
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Hi, has anyone in the UK had any success growing sweet potatoes?
If so what is the secret as no one on our allotments has had any luck with them and they are quite expensive to buy over here.
Are they subject to blight like normal potatoes?
Thanks in anticipation. 
moderator's note: split question from another topic and moved topic to more appropriate forum
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toni
 Administrator
Plants Moderator
Regular Plants Contributor
North Texas, Zone 8a
Posts: 11244
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| Posted: Thu Dec 10, 2009 8:18 pm Post subject: |
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I don't live in the UK but one reason you are probably having problems growing sweet potatoes is that they require a long, warm growing period with temps above 75 degrees as much of that time as possible. For some varieties it is 100 days and for others it is as long as 120 days.
Have you tried growing them in a heated greenhouse?
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EJ
Essex
Posts: 2863
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| Posted: Fri Dec 11, 2009 10:33 pm Post subject: |
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Hi cajokid. I have never had any success growing them but I have read blogs and posts from people who have. As Toni said, I think a long growing period is key, and as much of that needs to be warm growing time. I have heard people planting them under black plastic to increase the soil temperature. As far as I am aware, they are a member of the convolvulus family and so are not susceptable to blight. The growth above ground scrambles and I have seen people growing them up a trellis frame so the allotment ground is clear for growing other crops close by. I know Thompson and Morgan sell 'slips' which is the immature plant and I believe they are most reliable as they are sweet potatoes more suitable to our less clement climate.
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cajokid48
mansfield, notts
Posts: 6
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| Posted: Sat Dec 12, 2009 12:32 pm Post subject: |
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Thanks for your replies toni and EJ at least now I know why they haven't been successful with their sweet potatoes. 
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