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Edited on Sun Jul-11-10 08:56 PM by Agony
If you have healthy soil and they grow right along you will be fine. Potatoes should be left in the ground to suberize for at least 2 weeks after the tops have died or been killed by frost. During this time the potatoes will continue to increase in size as they pull in nutrients from the roots. If you make sure and hill up the potatoes with lots of soil it will protect them from freezing and you can leave them in the ground even longer ( I have dug potatoes during a break in the weather in December and they are sweet! ( potato starch converts to sugars under cold storage conditions))
Fertilize with well aged compost as raw organic matter promotes potato scab. Watch for Colorado Potato Beetles, yellow and black stripes on their back, you can grab the adults and crush them as a control works just fine for a patch your size. Check the undersides of the leaves regularly for clusters of long bright orange eggs and crush them as well if you find them. MAke sure that the cluster of eggs that you crush are BRIGHT orange and not yellowish because then they might be lady bug eggs, they look almost identical except for the color. The orange larvae from the eggs that you miss will eat a lot of potato foliage in just a couple of days but don't worry you can pick them off too.
Enjoy your potatoes, and of course enjoy growing them as well
Cheers! Agony
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