How can I grow a precious Flora Praecocia that isn't a worthless stone?  I have tried for months with no success? 

Using 'The Ultimate Fairyland Spoiler' on  http://myarduinoprojects.com/flcalculator/   and using your ID 0068

The pot to use at level:
14 to make the Fire Stone Praecocia is the Old Bucket
14 to make the Forest Stone Praecocia is the Upturned Mushroom
14 to make the Ice Stone Praecocia is the Tea Cup
15 to make the Earth Stone Praecocia is the Giant Sea Shell
15 to make the Night Stone Praecocia is the Clay Pot
16 to make the Sun Stone Praecocia is the Coconut
16 to make the Love Stone Praecocia is the Wooden Bucket

You can continue with trial & error only using the regular pots not any of the magical pots or seasonal ones or you can use the calculator to work them out for you. You need the last four numbers from your garden's back wall - yours are 0068. The calculator gives you lots of other useful info too...
http://myarduinoprojects.com/flcalculator/index.html

Can anyone tell me what my Id is as can’t seem to find it

1196

You can see it at the end of the address bar when you go to your back wall.  You have to be playing outside of Facebook to see it, and you also won't see it if you access your back wall by hovering over the mushroom, top left, and clicking your fairy's picture :)

Thank you x