Create and explode power-ups to charge up the lawnmowers faster. As soon as you collect the jars of honey, try to clear the spilt honey as well — it’ll greatly save you moves required to collect the gnomes.
Combine your power-ups by exploding them together, as it charges the Rainbow Blast faster. Rainbow Blasts can be used to collect the pieces situated in tiles that are difficult to reach: corners and sides of the fields. A match of two Rainbow Blasts can be quite helpful in beating the level.