How to grow the sweetest sweetcorn. The importance of planting in a block as sweetcorn is wind pollinated. The companion planting of corn, beans and squash together as the 3 sisters guild. How to check when corn is ready to harvest and 2 useful articles to read from growveg.com about corn and how to grow it successfully. A great crop even for a small garden, a small block of 10 plants can give you that straight from the garden taste lacking in so much store bought corn.