Is there a way to determine which pots work for each flower?  I thought there used to be a "hack" or something, but I cannot find it any more. 

You can use the Fairyland Calculator website to find your pots. I'll post the link in the next comment for easier copy/pasting.

https://myarduinoprojects.com/flcalculator

I've tried to use the calculator.  I don't understand how it works.   Everytime I see a link for it and click it, it just takes me to the garden of the person that posted it.  (Yes, it makes me feel dumb...lol.)

You need to click Copy under my post with the link, then paste that link into your browser address bar, which will then take you to the Calculator site.

Once there, put 4672 into the field at the top where it asks for the last four digits of your Fairyland ID, and click calculate. The page will then display your recipes and praecocia pots, and there's a section with the info in plain text for easy copy/pasting, so you can save your results somewhere if you want to.

Thank you!!!  Now I feel even more dumb!!  LOL   I wasn't clicking the link....every time you click on a post from someone it takes you to their garden!  I should have realized that since the text was not blue...(most links have blue text.)  I just was not thinking it through.   Truly....THANK YOU!!