20 Moves (revised)
3 Poppy Flowers
20 Water drops
Start by opening the main flowers, then use any matches you can to move your bulls down, to hit the poppies, then back up, then down again until they are all removed.
You also need to build up points on the strawberries, cascade crops to help with this.
Once you have missing poppies, make sure you try and make as much water as you can, once you have the ones you need, you can concentrate on the rest.
Patience and shovels and a very lucky board you can do it. Its one of those boards where its so easy to complete, but you get more bad boards than you do good ones.