Assemble the Block
1. Sew together one yellow print triangle and one blue print triangle to make a triangle-square (Diagram 1). Press the seam allowance toward the blue print triangle. Repeat to make a total of four triangle-squares.
2. Using thread in a color that matches the fabric, appliqué the yellow print 1×5" rectangle on a blue print 3-1⁄2" square to make a stem unit.
3. Lay out the triangle-squares, stem unit, and remaining squares in three horizontal rows (Block Assembly Diagram). Sew together the pieces in each row. Press the seam allowances in one direction, alternating the direction with each row. Then join the rows to make a block.