I can't vouch for the accuracy but this site has a fairly extensive data base which includes plant size and whether determinate or indeterminant.

I can say that Lemon Boy can get 8' but is such a hardy plant ... you might want to save your larger containers for more finiky varieties. Yellow Pear, the same cept it can get huge. I've grown both in 5 gal.

I would put Early Girl towards the smaller end of your spectrum but I'm not one of its fans.

Have Fun!

Here is a link that might be useful: Plant Files

Thanks for the link, I had just come upon the same site with a google search. Which is more important, the height of the plant or the spacing required between plants?

~~~ Which is more important, the height of the plant or the spacing required between plants? ~~~

IMO thinking about height potential should be a loose indicator of overall size coupled with type (determinant or indeterminant).

Spacing containers is only limited by your space, sun, and willingness to crowd, accepting the risks that overcrowding can cause.

If you are asking about putting more than one plant per container ... except for dwuarf varieties, that is not something I would do in the sizes you mention but others hold strong opinions the other way. Good Luck to em :-)

lemon boy
yellow pear
beefmaster
big boy
beefsteak
better boy
big beef
supersweet 100

Are the biggest plants on your list. Growing them in containers will limit their size somewhat but they will all still get huge.

Dave

Yellow Pear can become a humongous plant. Do NOT feed it.

I am only going to do one plant per container. Anybody know how much potting mix is needed per 18 gal container?

Also is there any issue with transplanting while they have fruit or are flowering?

Kati,
You'll need approximately 18 gallons for that size container.
Sorry, I couldn't resist...

18 gallons is about 2.5 cubic feet or about 1/2 cubic yard to fill all six containers.

Terry Light
Oak Hill, Virginia

Not on your list, but my vote is for Sungold. Last year my Sungold got at least 15 feet tall (two four foot cages stacked, growing up and over down to the ground)

On your list, probably Juliet. Almost all the cherries/grapes get huge.

Carla in Sac