How often should i watering begonias?
It's totally up to you Derek, but here's a suggestion: you might want to water this plant about once every two to four weeks or so, or just when the soil feels a little dry to the touch on the top inch.
As far as I know, you can water this plant once every four days. but it depends from your climate.
I looked online, and it looks like you should water begonias every two to four days.
I would suggest checking the humidity first by pressing the soil surface gently. If it feels dry, go ahead and water it, but be careful not to overwater and make it soggy.