Text containing roses

Now I got it...thanks

60 Second Photoshop Tutorial : Put an Image in Text -HD- - YouTube

Here's my example!

Briefly: Set your text in Cooper Black then save it as a Selection and fill it with the pattern you want.

Well, you can't "write with roses" but in addition to filling with a pattern, as per Derek, you can use a clipping mask.

Add a type layer

Add the roses layer over the type layer (this is an Adobe Stock image you can license), or you can use your own
Right click the roses > Create clipping mask

Perhaps select a single rose and jump it to a new layer (Ctrl/Cmd J) and duplicate for added interest