Sinfonian, have you thought about a simple garbage bag?
Here's a site that con help you.
wish you luck
Tamara

Here is a link that might be useful: potatoes

Thanks, I have Ed Hume's site bookmarked. I thought about bags, but wanted something more sturdy. I've seen garbage cans, storage bins and old tires. None seems to meet the width and height that I'm shooting for. Wide gives me more plants and high gives greater production from each plant. I may be forced to build something but I like the idea of plastic since it is solid, weatherproof and movable.

Here is a link that might be useful: Sinfonian's Garden

What about one of those "Grow Boxes". It's a bit more of an investment, I know, but it's sturdy and deep enough for potatoes, and you can use it year after year after year. You don't even have to replace the soil - just "recondition" it with some good compost and a little fertilizer, and you're all set.
MacThayer

Wow, I looked up the grow boxes online. They appear to be indoor year-round self-watering hydroponics labs. Very high tech. All I want is a dumbed down plastic container wide enough to fit a dozen or so potato starts and deep enough to get a dozen or so high.

All my online research has found specialty containers that cost an arm and a leg.

It's quite possible that I'm out of luck. I don't think I want to do 4 containers as my space isn't that big for them. Quite a conundrum... Thanks for the thoughts,

Sinfonian

Here is a link that might be useful: Sinfonian's garden in process...

Sinfonian, those boxes you have built look great and they are going to work out fine. You can even gardner year around with plastic hoop covers on them. Well It looks like you have done your homework. As for a large plastic container have you look at a feedstore. They have large sizes for livestock. It's worth a look.
Anyways, I think those boxes you built would work for potatoes. And with a cover you could grow year around.
Good luck
Tamara

I redid my windows this fall and have almost enough 4 and 3 foot windows with 2x2 frames around them to cover all but my corn bed. So I can likely use them instead of the hoops, but first I'd have to build them up with 1x6s or something so things can grow under them. They'd be heavy so maybe I'll look into the hoop idea and save the sun box concept for plants that need it.

Good idea Redblossom, I appreciate the help, I'm new to this (you can tell as I still don't have dirt in my boxes; can't wait for February).

You might try Walmart or Target. They sometimes have large plastic containers like 48 gallon that might do the trick and they are not priced that high.

1eyedJack and the Dawg

Well, I got a great suggestion from a gardening friend in Alabama who directed me to an old newspaper article from MY hometown newspaper. It talks about and shows you how to build your own build-as-you-grow boxes. I had thought about building my own but didn't think of this.

I'll build mine with 1x6s (should be strong enough, if not I'll double them up) and line the bottom with landscape fabric for drainage and soil containment on gravel. This way I can make them any size I want.

Thanks for all the suggestions. I really appreciate the help!

Here is a link that might be useful: Seattle Times article on Potato Bins

Know any contractors or large construction sites? Drain pipe cutoffs may suit you. HDPE 36" pipe sections might be perfect in size and they are black, good for heat too.