Again and again the rumor goes around that ginger is harmful in larger quantities. However, home-grown ginger can usually be consumed indefinitely if it does not individually lead to flatulence or diarrhea.
Pregnant women should avoid ginger
Ginger has a variety of beneficial effects on the body in normal people, but it can also induce premature labor in pregnant women. So while pregnant women should refrain from consuming fresh ginger or ginger brewed as a tea, you can follow your own feelings when consuming ginger when you are not pregnant. As long as you don't notice any negative consequences from consuming ginger yourself, you can easily integrate it into your diet, even in larger quantities.