I have grown potatoes for 3 years and every year they have grown that tall (approx 6 to 7 ft) I have had to stake them to support them. The soil was, 4 to 5 years ago very clay bound but has been treated with everything possible and is now quite reasonably loose and easy to turn over. Beet root, onions and carrots also reached for the sky and like the potatoes did not produce much crop. Anybody got any advice or ideas ? ?
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