You should be able to clear it in a day or so with carrot + overgrow gene (lvl 5+ plantation upgrade I think) + fertilizer that has grow time / 2
You have to wait until you have a 800% carrot.
That's 30 + 37.5 + 46.9 + 58.6 + 73.2 + 91.5 + 114.4 + 143 = ~600min = 10h
This is with 400% overgrow
The upgradable part of overgrowth gene gives you a flat 15 % bonus per level - which is added to your base ovegrowth and then multiplied by 2.5 modifier of the gene itself. So it doesn't really matter if your base overgrowth is small, the gene is gonna do most of the heavy lifting (provided you upgrade it)