I use small containers to install my tomato plants. Compost my dry toilets and garden. Some nettle leaves. Take it from below to avoid being bitten. Nettle is an excelent tonic. A little compost. I close with some mold. With this container, the water is concentrated at the foot of the plant. Waterings per week and really enough. The sheet does not like contact with water. These few feet are placed under a roof. They take longer. October real say. Ditto for my garden. Distant from 40 to 50 cm on all sides. We must respect the crop rotation. 4 years minimum, to the same place. This bracket will strengthen all props. The holes will be slightly larger than the props. I work a little ends to facilitate passage props. This small pieces protect my cover. With two is easier to install, but I can lonely too .. To keep them, I add to the ends of small nails. With the weight of the tomatoes, props will sink slightly into the ground. This structure more resistant to wind. The side facing the wind is reinforced by a thread. To follow, Thanks !!