I'd put the fennel where it gets morning sun only.

I have my parsley in a pot, in full CA summer sun and it survived last summer just fine.

Fennel grows in the Mediterranean, so I don't see any reason to protect it from sun. It grows wild near the sea here and can take salt winds and exposure. It is perennial and self seeds like crazy so if you had it in flower last year I wouldn't be surprised if you find seedlings. It gets a big tap root so is not really suited to pot culture. It's hard to weed out because the roots are so tenacious.

Parsley is a biennial, so you'll normally only have foliage the first year. In spring of the 2nd year it will send up flower stalks, ripen seed, and then die. I plant some new each year since the previous year's plants send up a nice early flush of foliage for a number of weeks before fading and that I can use until the new plants reach harvestable size.

Weirdly, the parsley plants I started myself from seed last spring bolted to flowers the same year. I am in central Ohio, U.S., where we had unusually high temps for most of the summer, so I am guessing that is why. Have never had this happen before.

I'm in Western NY State (not all that far from you) and have seen parsley bolt same year after a hot summer. It was, howver, the best year for the self-sowing it can do. Those late-summer/fall dropped seeds sprouted into a wonderfully thick parsley patch come the next spring!

FataMorgana

I have never grown Fennel but I grow parsley and dill every year. They both like cool weather and can thrive with less sun in partial shade. The only difference is that dill is annual and it is not cold hardy but can stay live till first frost. I usually grow fern dill though.

Dill just doesn't do well here at all, so I skip it. Italian parsley goes until it seeds out, so you have to replace it eventually. I've found that Bronze Fennel is quite long-lasting here. Regular fennel does well, but eventually it has to be replaced..