Question
I live in the country (Lockhart, Texas) and am growing potatos for the first time.  How do I know when the taters are ready to be dug up?  

Answer
Barbara, once the vines begin to flower, stop mounding the soil and start mulching heavily with straw to conserve moisture.  Water deeply at least twice per week.  Do not fertilize with a high nitrogen fertilizer.  This will result in lush foliage and very small tubers.

Once the foliage begins to brown and wither, the tubers should be fully grown.  Dig them by hand to avoid puncturing them with a spade or pitchfork.  Since they will keep in the ground for several weeks after maturing, you should wait until the soil completely dries before
harvesting.

I hope this helps.  Good luck, and if you have any other questions, please feel free to write again.

Regards,

Mike