There are 5 roses, one in each of these locations:
- one in the corner on the car tile
- one in the tile outside of the window between the 2 trees
- one is in the shadow puzzle tiles, in the second tile in the puzzle in the back corner
- one is in between the trees in the tile that's fully packed with trees
- Lastly the final rose is in the corner behind the toilet building/outhouse
Some are hidden behind certain things, so try to scrape and explore every tile thoroughly! Hope this helps :)