I've made 5 raised beds at 3x3 each by using redwood dogeared picket fencing and cedar picket fencing. They seem to be fine. The first 2, cedars, were built last year and they seem fine now. Of the other 3, 1 was built towards the end of the season last year and is not housing 3 tomato plants and 3 pepper plants. It seems to be working fine. The last 2 were just built this year but only one is housing 4 tomato plants including: Roma, Early Girl, Money Maker and Yellow Pear. In the center there is a pepper plant and these seem to be growing fine.

The redwood boards are under $2 each, making the bed cost just under $15 each. The boards are 6 feet and have them cut in half and therefore only needing 4 boards. They are not think enough to have a screw to hold them together, so I pick up an 8 foot redwood post, about $6-7 each, and have them cut to 8 pieces at 1 foot in length. The beds end up at just under a foot tall and the seem to be tall enough. I fill them with compost and mix in grass clippings.

I don't have any of them staked because once it is filled, it doesn't move. It also made it much easier when I had to move them. I needed them moved to make a walk-way behind them and it was the only way of doing it.

I wish I would help with the other questions, but I haven't had the bunny issue. Although, if I haven't planted anything in them, the cats like to use it as a littler box. I just put a large sheet of chicken wire over them and that fixes that issue.

Luis

Here is a link that might be useful: My blog post about my first cedar beds.