There are definitely some vegetables that need to be harvested at the right time because the timing can affect their flavor, like cauliflower and lettuce. My mom told me that lettuce should be harvested in the morning because harvesting it at the wrong time can affect its flavor.

You harvested quite a lot of cauliflower. Your very first attempt at growing it was already successful. Congratulations! You can finally enjoy the cauliflower you just harvested.