I planted in a half whiskey barrel for the first time the other day so my advice
is based on what I did then and what I read in The New Victory Garden, not on
what I discovered at the end of the season.

You will need drainage holes. I drilled 5 holes in the bottom with an electric
drill. The bottom was thicker than I thought but still easy to drill through.
As a rule, I'm uncomfortable with power tools, but this was pleasant because the
barrel gave off the loveliest aroma of sweet whiskey sauce during the process.
I'm not making this up. Think New Orleans style bread pudding.

The barrel was heavier than I thought even with nothing in it. I know you're
setting it on a platform on wheels, but put it where you want it first anyway.
Then fill it with dirt.

The barrel came from Home Depot with a nice black pitch sort of material from
charring the barrel for whiskey. I didn't use any sort of plastic liner. Then
what would be the point of the drainage holes?

I did put some rocks in the bottom before piling dirt, peat and composted manure
on top. I'm not sure they were necessary, but I have plenty of rocks so in they
went.

I wouldn't expect the barrel to last forever, but the ones I've seen around here
have lasted for a good long time. Perhaps plastic is more durable, but plastic
is ugly. I believe the trade-off is worth it.

That's it. I put zucchini in mine.

--Lia