My goal this summer is to add trellises to grow pole beans, English peas, and melons. I've already purchased thirty five 8ft T-Posts and the trellis netting, which will be enough for five 25ft beds.
My dilemma is how to make the holes for the posts. I don't have a post hole digger, and really don't need a big hole to set these posts. Rather, I need a "slit" into which to place the posts. I could hammer them into the ground, but there is a rock ledge just under parts of the clay top soil throughout the garden, so I don't want to bend the posts. We have built raised beds on top of the clay soil layer, so I need to get the posts deep enough to go through the 12" layer that I have created, plus another 12" or so into the clay layer to prevent the posts from tilting in the wind.
Anyone had experience setting such posts? If so, what tool did you find worked best? I don't have anything mechanical, and don't have a lot of money to spend.