For anyone who is forming a snowdrop collection then it is essential to have some form of labelling system. Over the years I have tried various types of labels and different forms of markings.
If the labels used in the garden are too short then they are displaced by the blackbirds or squirrels, so I now use large black square-headed labels which have a 12 inch
As regards the lettering I have in the past tried writing with permanent ink (which can fade in the sun); using pencil on aluminium and etching on copper, both of which only remains fully visible while new.
My salvation is my printing machine which produces the labels on sticky-backed tape which neither fades nor falls off. Another advantage is that when the label is no longer required the tape can be peeled off and the label re-used.