tillie tulip - a handmade mishmosh: Rose granny rectangle afghan completed--another beautiful blanket by this crafter--the afghan is just a big granny rectangle and she provides a tutorial on how to make the sweet rose. Afghans Complete, Rose Crochet Blankets Squares, Crochet Afghans, Crochet Rose, Rose Granny, Red Rose, Tillys Tulip, Rectangle Afghans, Handmade Mishmosh
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Granny rectangles not squares. There is no pattern but if you looked closely you can see that there are 9 sets of trebles in the first row. You also need to add chain to make the beginning and end holes so that you can start your next row which then includes turning corners.
rectangle crochet afghan @jw we could try this one, though it's worked in the round & requires more counting...