Ruling 2112
There is no problem in selling cucumbers, aubergines, vegetables, and the like which are picked a number of times a year as long as the produce has become apparent and is visible and the number of times the buyer will pick and purchase the produce has been specified. However, if the produce has not become apparent and visible, selling it is not permitted based on obligatory precaution.
-Ayatullah Sistani, Practical Laws of Islam, Buying and Selling