mmm...very inspiring planters in the sign snap!
Hmm, too.
However, I do have some sympathy with whoever arranged for those fairly modest planters to be placed on that platform, for two reasons:
Firstly, they have to be set back (as far as possible) from the platform edge, allowing passengers to pass unimpeded along the platform, and (you will note from that image) they should be secured against something substantial, such as railings, to prevent them being shoved onto the track;
Secondly, they are generally provided by a volunteer group, such as a Community Rail Partnership, who may have limited funds and personnel to install and maintain them.
Teignmouth station, down in a cutting, isn't perhaps the best place to try to offer a 'Chelsea Flower Show floral display' in any such planters - but fair play to whoever did put them there, as anything is better than nothing, in terms of making bare platforms less stark.