Carrots: difficult year due to drought, early crop slow, stubby & multi-rooted, fall crop needed 2 plantings, many didn’t mature – try pelleted seed next year
Celery: best ever!
Fennel (bulb): first seeding failed, second seeding plants small again – try slow-bolt or heat-tolerant variety? try replacing with celery root?
Parsnips: best crop to date, timing good, pelleted seed rules! – thin better next year