This verse has an overabundance of negatives. It begins with the phrase "not no longer." This is translated as "not any longer" or "no any more" in English to avoid the double negative.  In Greek, this double negative increases the negativity here.  The verse than has a "never" which means a triple negative.

This verse tries to capture the idea of Jesus's words but Biblical translation obscures much of Jesus really said. There is no command in this verse. The verb translated as "grow," which really means "become" and in the form, the subjunctive mood, about what might happen. It is a statement, "fruit might not occur in this life."  Portraying this as Jesus "cursing" the plant is simply not justified.

This verse comes off as a light-hearted complaint rather than a curse. It might also be taken as Jesus contemplating his own upcoming death and the fruit of his lifetime. The "life" referred to is not necessarily the plant's but his own. This might have been his last chance to taste a fig, certainly from the tree. The tree may have wilted in embarrassment.