It's April... Let's talk gardens

I've run into a few interesting gardening and growing articles in the NYT from the past few months.  Here's a sampler:

There's this fascinating article on the history (and uses) of horseradish.

Also this from last month on the "future of food growing" through aquatic gardening. 

And, finally, this piece of interesting news.  Apparently, the Vertical Farming idea (pitched, among other places, here by a professor at Mailman School of Public Health) is taking off in some new federal construction.  Super exciting!