A water absorbing fixture by sponge adapted to make a planting sponge having a excellent degree of saturation water is provided. The planting sponge is accommodated in a planter of a planting apparatus. The water absorbing fixture by sponge includes a base, a plurality of guide post elements, a frame device, an extruding device and a punching device. The base has a supporting surface. The guide post elements are fixed on the supporting surface. The frame device has a pair of first frames and a second frame, and the second frame is perpendicularly connected between the pair of first frames. The extruding device is installed on the supporting surface, and the extruding device has a water-filled opening, wherein the extruding device is movable relatively to the guide post elements, and the planting sponge is adapted to receive a liquid by the water-filled opening. The punching device is fixed on the second frame and is connected with the extruding device, wherein the punching device is turned to drive the extruding device moved relatively to guidepost elements, and the extruding device approaches or depart to the supporting surface of the base.一種海綿吸水治具,適於使一栽種海綿具有極佳的飽水度。栽種海綿容置於栽種裝置的一播種盤內。海綿吸水治具包括底座、多個導柱件、框架裝置、擠壓裝置與沖壓裝置。底座具有承載面。導柱件固設於承載面上。框架裝置具有一對第一框架與一第二框架,且第二框架垂直連接於這對第一框架之間。擠壓裝置設置於承載面上,且擠壓裝置具有注水槽,其中擠壓裝置可相對導柱件移動,且栽種海綿適於藉由注水槽接收液體。沖壓裝置固設於第二框架上,且連接擠壓裝置,其中扳動沖壓裝置以驅動擠壓裝置相對導柱件移動,且擠壓裝置接近或遠離底座的承載面。
