DO NOT PANIC You do not need to remove all of the flowers. You get a lot more sitting there than you need.
The best way to plan this level is to open the flowers, using either horizontal or vertical rows, whichever is easier.
Then make as many rows as you can on the grass because you get more points than without the grass.
You should get more suns falling, so don't worry about breaking the ice. All you need to do is build up the value of the sun(s) you have in play. Even if you only have 1. You just need to get 8 points on it and there is the sun requirement gone.