- Thread starter
- #21
I've seen that idea! ... it's actually what made me think of bottles instead. Cut wood of 1" to 4" diameters is what I saw. Not sure if it would help much to reduce weight in the bed but I can see how it'd surely help the soil. Not sure where I'd find such wood in my surrounding landscape. If only...I would suggest using wood as filler on the bottom, that's the hügelkultur method. Benefits of using wood in the bottom is that the wood will act like a sponge and retain some water longer and release it to the plants. Also, as the wood breaks down and turns into soil, it actually improves the environment over time.
Plastic bottles will certainly work as a filler, but you won't get the benefits of the sponge-like effect of wood and plastic won't break down over time to enrich your soil like wood will decompose.
I use wood as filler in all my new raised beds. Last year, we had a terrible drought with no rain all summer. I don't have running water in my main garden. My hügelkultur raised beds were the only raised beds that had plants that survived and produced food. That made me a believer in the hügelkultur method. My other raised beds, without wood in the bottom, just dried up and everything in those beds died.
One thing different about hügelkultur raised beds is that as the wood decays, the soil level in the raised bed will drop an inch or two per year. I actually prefer that because I know that the decaying wood is improving the soil below, and I use my chicken run compost to refill the raised bed on the top. So, in theory, every year my raised bed should be getting enriched both the top and bottom. In practice, my hügelkultur raised beds have shown increased productivity every succeeding year.