The present disclosure is directed to a method for providing a flow-able hydrogel for germinating, cultivating, transporting or displaying plants. The method generally includes at least three distinct steps: 1) dissolving a polyethylene glycol having functionalized end-groups in water to form a flow-able solution, 2) dissolving one or more activating agents within the flow-able solution such that the activating agents react with the functionalized end-groups of the polyethylene glycol to form a non-flow-able hydrogel after a set-time, 3) pouring the flow-able solution into a container prior to the set time such that the flow-able solution assumes the shape of the container and forms a non-flow-able hydrogel.