Location: north Italy (alps)
What kind of caterpillar is this, and will it do any harm to the fennel or any other plant in my garden? I have leeks, blackberries, mint and lemon balm nearby. Should I do something about it?
It's the first year I ever plant fennel in my garden. I think I planted them on a too shady place, as they are growing over 1m high like a stem instead of growing a "bulb" at the base, so I'm not too worried if the leaves are eaten by the caterpillar.