I was in Berlin at the beginning of May and I bought a small Dianthus deltoides, washed off most of the soil and brought it back to Rome. I am not a big fan of large-flowered, colourful Dianthus but deltoides seemed much more delicate from the photograph on the label. And so it has turned out to be. Lots of new roots growing and the first flowers opening up just 3 weeks after its journey in a rucksack. I like to recycle transparent plastic cups which are thrown out in their hundreds of thousands every year, not only from an environmental point of view but also because they are ideal for seeing how cuttings etc are doing root-wise.
Reading up about it, it would seem that it has a fair chance of survival. I had hoped to see lots of references to it on the forum but there are only 2 ("Nature wins Gold" and "Typical Garden Flowers 100yrs ago"). Is this because it is so common-place in mediterranean gardens that there is no need to talk about it here? Hope so.