All growing in sacks and got quite tall (about 3 foot). Then last night there was a really heavy storm and they went over 
Is there any way I can save them? The stems haven't completely snapped but are bent right in half.
Is it too late to plant more?
Any suggestions for stopping my next lot growing so tall? Last year I put them in the shade and they grew 5 foot tall and fell over. I thought I'd cracked it this year by putting them against the shed in the sun 
I'm quite new to gardening so please tell me not to give up hope of ever getting a good spud harvest!