To provide the component of sectional article for gardening, which facilitates assembly and disassembly and can be used for multiple purposes through exchange, and that sectional article.

On the oblique side of trapezoid as the outline form of main body 1 for a component 10 formed in the shape of plane grid with laterally symmetric trapezoidal outline, a connector 2 is attached for freely separately engaging the upside and downside of adjacent main body so as to abut the oblique side of trapezoidal outline in the same or reverse direction. Concerning the sectional article composed of such components, there are articles (trellis) mutually abutting and planarly parallelly connecting the oblique sides of trapezoidal outlines of adjacent main bodies while vertically inverting them or (snowshed) mutually abutting the oblique sides of trapezoidal main bodies of components in the vertically same direction and connecting them in the form of polygonal cone cutting apex parts.