The invention relates to a device for attaching retaining means or clips on guide means, in particular strings, for training vines, and to retaining means for this device. To achieve an increased cycle frequency when fixing retaining means to guide means combined with a high degree of automation and economy, it is provided according to the invention that the device is designed with at least one reservoir, a magazine or such a part for the sequential providing of open retaining means and/or of retaining means shaped as two shells and a device, connected to the former, for closing the shells of the retaining means when attaching same to the guide means and enclosing the vine.
