How is crossbreeding Jute and Tantalplant?

[Vidu]

If you follow the link and go to crossbreeding and check Ivory's Advanced you'll see that you keep 3 Tantalplants and only the remaining 5 plants.

You havent provided a link, but anyways - I believe I have answered your question then? Using the method I suggested above, you'll always harvest all plants you planted, its designed to re-produce all the expensive seeds you need to use (by getting jute back with jute x mandrake and utilising the Thavnair Onions to get Premimum Chocobo Food seeds) and the only seeds you need to put in are cheap ones (Coerthan Tea, maybe on occassion dye-food - those seeds are available for the old hunt-marks, you can get 100 of those hunt-marks per week easy enough).