Every summer I look out the front door in amazement at the sheer amount of green in the yard. It happens fast, growing from tiny sprouts in the cold, hard ground of March into mountains of thick stems and new fruit in July, fast forward through August’s drought into September’s harvest and back to ground level in November, under a blanket of snow. This year I have a new element in “waffle beds”; depressions dug below ground level to increase drought tolerance. I began making raised beds into recessed “waffles” back in April but the technique has really proven itself during the last three weeks of searing heat and zero rainfall. Here is the waffle structure near the front of the house, photos taken once a month from May through mid-August:
We’ve had some precipitation this month but it has come as sudden downpours of heavy rain over a short period. My raised beds never absorbed much water because the deluge simply rolled off the dry, caked soil on top – although the recessed paths on the sides (where all the moisture ended up) generally looked great after a storm. This year, no matter how hard and suddenly it came down, rain pooled at the bottom of the depression where it would do the most good. After a week of sun and August heat the bottom of each waffle, shaded by plant foliage or mulch, is still moist and friable.
I have begun transitioning the entire garden over to recessed beds, mostly waffles but with an experiment in “swale” gardening on a south-facing slope (to be explored in a different post!). There are a few places where I’ve dug to a depth of 18″ and found ledge – very common in Downeast Maine. I’m using the same process of adding good soil to the bottom of the waffle, but will track these particular beds and see if drainage becomes an issue. I’ve also made a note not to plant root vegetables in these locations just yet! It may be that I eventually build higher walls around the ledge-prone areas to provide extra depth without digging, but soil is at a premium in this garden and the experiment will have to wait for now.