Don't trust your gardeners
Sure, your gardeners are super helpful for when you're not around to manually collect your rewards, but they aren't to be trusted to run things. The truth is that gardeners are slow and entirely dependent on the optimisation of your pathways. Honestly, the amount of work you can do in mere minutes will always far outweigh your gardeners' best efforts.
When designing pathways, you really need to consider what function they serve. For example, will your gardeners be able to collect multiple flowers on the route? Everything costs money and there's nothing worse than paying for something that serves no real function or leads to a literal dead end.
Oh, and while we’re at it, coffee machines will double the speed of your plodding gardeners – just be sure to place one along their main route so they can grab a drink.
Decorations are key
Despite Sprout: Idle Garden being (big surprise here) an idle game, it's always best to check on your town at least once or twice a day. That being said, maybe you find yourself especially busy for a few days in a row or perhaps you're just a tad forgetful? Well, no need to worry, as the game's decorations are here to help.
Decorations aren't just cosmetic, no sir, they also serve to boost the value of all your flowers. When you're just starting out, your output won't make much return on investment, so stacking decorations can be a great way of maximising profits – just be careful not to go overboard with them, though.
Maybe watch a few ads
Ok, so nobody likes being told to watch ads, but hey, this is a guide about maximising profits, and that's honestly the best way to do so.
After a hard day at work, just log on to check your town and boost your profits, or gain helpful temporary buffs, by watching a little ad – it's easy, quick, and helps out the devs.