Maximizing fennel production with vertical farming on aeroponic towers. Fennel typically takes about 80 to 100 days to reach full maturity after being transplanted. The ideal growing temperatures for fennel are 15°C to 24°C (59°F to 75°F), with cooler conditions supporting better bulb development. #fennel #farming #agriculture #gardening #herbs #aeroponics #soilless #hydroponics