Hello and welcome.
If you search the internet for 'silk Flanders Field poppies', the links will mostly lead to the 'buddy poppy' or to the poem.
May I suggest you try searching for images of 'red silk poppies' ( without the words 'Flanders Field'); you will find several suppliers. From there it is just matter of selecting the one that fits the type you need.
Alternatively, you could contact the local American Legion Auxiliary and ask; they may be able to direct you to a local source.
I found this one:
http://www.afloral.com/Silk-Fl...