The title of this post should be, to fill or not to fill that is the question. I have a need to raise my current raised garden bed to a much higher level due to health reasons.
The new garden area will look like a wide and flattened U 12’ x 8’ with a 4’ notch in the center for easy access.
I am planning on using 2X12’s stacked 3 high for a total 33 ¾ inches.
Now the questions:
1, use treated lumber or use rough cut from a local saw mill
2, should I fill it first with some crushed stone or pea gravel
3, do I line it with landscaping fabric
4, will I need to drill some drain holes
5, how many yards of soil will I need, I have trouble doing the difference from Ton to yardage, a rough tonnage in my mind would be close to 8t.