Words of advice?

The Head Gardener needed some begonia tubers to replace some which didn't overwinter well, so we headed down the Clyde Valley.   We had to try several garden centres before we found what he was looking for, and as we were heading out he met a gentleman who was also a begonia grower, hadn't seen him for a long time but they used to show at the East Kilbride and Ayr Flower Shows.  

So they settled down for a long chat, and I wandered off to have a look at the shop..... saw lots of nice things, but was quite taken by these signs..... didn't buy them of course, just photographed them.

Good advice?