http://www.durgan.org/URL/?TomatoS 18 May 2009 Tomato Support System One tomato plant was place in the outdoor garden, frost is still possible. The support system is depicted in the pictures. Basically the plant is held in position by strings, tied to an overhead support. The rebar is eight feet long pounded into the ground about 18 inches. The plants are spaced at two foot centers, which is adequate using this support system.