We received reports that there are portions of Ode to Olympus where crops do not grow or are not affected by Instagrows and Unwithers. We would like to share that it appears to be a visual glitch when crops are planted within the special AoE tiles. The FarmVille team is looking into correcting this at the soonest to avoid further confusion. In the meantime, please hover your cursor on the plots to see the actual status of the crop and farm normally.
For players who would like to correct the images of the plots, reloading the game will refresh the appearance of the crops!