I separated terumot and ma'aserot in advance using the regular text. What now?
Question
We just moved to a new house with a lemon tree and wanted to separate terumot and ma'aserot from the ripe lemons on the tree. We are members of Beit Ha'otzar. My husband and I each picked a lemon, and recited the regular text for separating terumot and ma'aserot. Now what?
Answer
Produce that is still attached to the tree or the ground is not yet obligated in terumot and ma'aserot. Best going forward is to do a harvest, then set aside a bit more than 1% for your terumot, and then proceed with the regular text.
However, bediavad, it is possible to perform a separation in advance of harvest, which seems to be what you were trying to do. However, as an integral part of the process is reciting the appropriate text in which we designate and name the various gifts (terumah gedolah, ma'aser rishon, terumat ma'aser, and ma'aser sheni or ani), if the wrong text was used, it doesn't "work."
While advanced separation should only be used in bedi'avad situations, where you are concerened that people will harvest without separating, in this case your best option is to recite the appropriate text for advanced separation, using the lemons you previously designated as terumah. Afterwards, you can double wrap and dispose the lemons. Then you can harvest up to a bit less than 200 lemons this week.
Since you did designate the lemons as terumot, though, you should use them for this purpose.
.Again, going forward, harvest, and then go through the entire procedure
See the text for advanced separation, with a side-by-side translation, here.
See an explanation by Rabbi Moshe Bloom on advanced separation, here.