@gardenglory,
I found Jungle Growth at Lowe's. Maybe it's the last of it, but 2 stores in the Clearwater area have it right now. Espoma makes a garden lime which is the dolomite. I've found that at both Lowe's and Home Depot. And both of those stores also carry a variety of fertilizer. Personally, I don't think it's that critical that you use the 10-10-10 fertilizer, just a good, balanced garden fertilizer.
Additionally, for what it's worth, I don't use a straight potting mix. I combine potting mix, coir and perlite. I also discovered that adding Azomite was a big boost to the plants. This is my first year using the Earthboxes in FL (came from the Midwest) so I'm hoping the same combinations work here. Jungle Growth wasn't available in Indiana so I used the Metro Mix 360, but I can't locate that here close to me and that's why I'm trying the Jungle Growth. If you go to the Earthbox website, they have a list of 'approved' potting mixes. It's quite extensive so I'm sure you can find something on the list that is available locally for you.
Good luck.
