Here is my "plan" - I've decided to leave out the last row as I think with borders that 7 blocks across and 10 blocks down will work fine! That gives a total of 35 plain blocks and 35 flower blocks!
The blocks each measure approx. 5 1/2 inches with the borders, so this might help you get a rough idea of the size you want.
I've decided to use 4 main colours with 2 extra colours for variation. I'm using 8ply (dk) cotton (since my granddaughter lives up the top of Australia where it is quite hot for most of the year). You could easily use another type of yarn or stash dive for whatever you have on hand! If you want to know just what I'm using, its Bendigo Woollen Mills Cotton in Snow, Daffodil, Wild Lavender, Pink Rose, Primrose, Peach and Meadow. Snow is being used to edge each block and join them together, and it also sits in behind each flower. I think the white makes the flowers "pop". All my flower centres will be yellow (daffodil), however I plan to change the flower colours as well as the background colours to make a lovely bunch of flowers!
I'll leave you to go stash diving or decide on colours and gather all your supplies together! You might want to dedicate a special basket for this project so its easy to pick up and work on. I'll be back on Saturday with the pattern and a cuppa to sit and crochet together ............
Thanks to those who have emailed me to say they might be joining in!