A device to insert a wick into a plant pot, an assembly of the device and the wick, as well as a method of making the device. The device is configured to insert a wick in substrate contained in a plant pot, and comprises an elongate body, and at least one wick clamp configured to engage a wick at at least one longitudinal end of the elongate body. The clamp extends over a considerable portion of the length and optionally over essentially the whole length of the elongate body. Wicks may be assembled with the device automatically or manually.