How to reflect objects outside art board?

[maxp16582732]

Hello, 

I have a pattern I made where the design falls outside of my art board. I would like for the parts that fall outside of the artboard to be reflected to the oposit side of the art board. For example; I have a flower petal that reaches outside of the bottom of my artboard square. I would like the part that extends out side of my artboard to be reflected to the top inside of my artboard. Is there a way to do this? I'm quite new to illustrator, any help would be greatly appreciated! 

Thank you!

[Ton Frederiks · Accepted solution]

Did you try the Pattern maker, it can repeat objects for a seamless pattern:

https://helpx.adobe.com/illustrator/user-guide.html/illustrator/using/create-edit-patterns.ug.html