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This could help narrow it down for you https://jaboticaba.in/jaboticaba-list/I agree with Mike, the red is a beast, so much fruit non-stop, nice looking tree also.My personal favs are the PDM(blue velvet) and Spirito, they both put out super colorful leaves when they flushWhich Otto do you have?
Whats your goal in the 4 additional vars?different flavors? different blooming times? will these be going in the GH as well?Are you open to other Plinia/Myrciaria or just Jabos
Plinia clausa and inflata have gigantic fruit and are supposedly delicious- Hapa Joe and Nate just did a review of the former but the latter might do better in your climate, especially if you want to put them outside