It goes without saying, that, the more you post, the more you grow. If you don't put out content consistently, then there isn't anything for users to consume and they don't have a reason to visit your page or interacting with your account.
On the other hand, there is certainly the possibility of posting too often. Which can be equally damaging to your brand, so where do you draw the line? It's certainly thin and definitely varies across industries.
So what is enough?
From our experience, posting once a day is a great place to start. Any less and you risk being insignificant in the ocean of content that is created daily. At least, this regularity of posting has seen great results for growth and the best results for rapid growth came from posting 3-5 times a day, but you have to act in the best interest of your business. Which can depend on your followers, you need to post at a rate that doesn't saturate their feeds, as this can create a feeling of detachment from your posts - they will no longer have the same power of evoking an emotion or resonating with the person on the receiving end. You don't want to be considered as a spammer. It's best to experiment with different levels of exposure and hone in on the level of posting that gives the best results for you.
Part of scheduling is reviewing the analytics of when your followers are online, this should influence your decision of what time to post. For example, the largest population of your audience might be online between 1900-2200. Therefore, posting at 15:00, during a lull of your audience being online will serve you poorly as you won't receive the full potential of your reach. These analyses can be found on your profile page and accessed by clicking the bar graph icon next to the gear icon in the top right-hand corner.
Experimentation is very useful, try different times and then focus in on the ones that bring the best engagement. Eventually, you will have a pretty good idea of which times of day work best for your content and gets the best engagement from your followers