We are getting close to actually breaking ground on this project and two parts of the design are still not completely decided; swale placement and planting density. I am posting this in the hope of getting feedback before we start digging.
Our original plan was to add seven swales at intervals of thirty to fifty feet moving from the wet area near the pond north to the drier area near the top of the field. As we have studied the field and planned further our thinking has changed. We now think we might be better served by adding a small holding pond near the top of the field (North End) which would enable us to catch water and use gravity to feed a watering system for the swales below it. At first this would simply be a hose but could be made more elaborate if needed in the future.
Below the holding pond we would build four swales about seventy feet in length, across the field, each overflowing into the one below with the final swale overflowing into the main pond at the south end of the field. We plan put the swales about thirty feet apart. This would allow us room to add additional swales, in the future, if more production is desired or to use the wetter area, near the pond, for some other type of planting like rice paddies, a cranberry bed or …
“The best time to plant a tree was 20 years ago. The second best time is now. –Chinese Proverb”
Our thinking on swales is guided by several ideas. The first is dollars. Since we neither own nor know much about driving heavy equipment, our first consideration is the dollars necessary to hire the needed equipment and operator. We will only be able to build the number of swales that our budget allows. (We are hoping that there will be enough in the budget to do the holding pond and four swales in the food forest area and another project to catch runoff, that is currently a problem in another area of The Land, and divert it to a place where we might build “rice paddies” some day. More about that in the future, hopefully.) The second is the height of the plants. Thirty feet is about the height of some of our larger berry bushes and our smaller nut and fruit trees.
By setting the distance between the swales at thirty feet we hope to allow for maximum sunlight penetration. The larger nut trees will be planted on every other swale, accounting for their higher maximum height.
The picture to the right shows, in cross section, what we hope our finished swales will look like. They will follow the natural contour of the field and spillways on each end will keep the water from getting deep enough to wash out the berms on the lower side of each swale. The swale containing the water in our holding tank will be used for planting but will be built a bit stouter than the other swales, more of a dike.
As mentioned above, the original plan was to build seven swales. However, the budget does allow us to buy enough plant material to densely plant all seven swales. The budget would allow us to buy enough plants to densely plant four swales and at the same time allow us to plant with greater diversity. We believe this is important because The Land is in a place where deer pressure is high. We hope to “defeat” the deer, really limit deer damage, by using planting density and a seven foot fence made of T-posts wrapped with bailing wire at one foot intervals. Once again this is a plan that we believe will work without busting the budget with thousands spent of fencing. Researching on-line and at sites like Permies.com we found others with similar problems and are hoping what worked for them will work for us.
Long term we hope to create a natural deer barrier using selective plantings like Seabuckthorn, Maximilian Sunflowers, Black Locust and Black and Raspberries. When this barrier matures we hope that it, along with plant density on the swales, will allow us to remove the fencing and be in a position of sharing food with our furry and feathered friends while still harvesting a good crop of human food.