Can you span multiple columns or rows in a grid?

Is there a way for a view to span multiple columns or rows when using LazyVGrid or LazyHGrid?

I'm trying to make a calendar and would like to have a row that is the month and year label. I've tried using several LazyVGrid in a LazyVStack, but the scrolling performance seemed pretty poor, so I'm trying to see if I can make a single LazyVGrid work.
Can you span multiple columns or rows in a grid?
 
 
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