Primrose is a cropped cardi worked from the bottom up, then split for the armholes, and the fronts and back are worked separately. Stitches are then picked up around the armholes, simple short row sleeve caps are worked, and then the sleeves are knit down in the round. The only seaming is at the shoulders! (If a longer version is desired, simply buy more yarn, work longer before separating for fronts and back, pick up more sts for the bands and add an extra buttonhole or two on the buttonhole band.)
The sample shown was knit with 1" of positive ease in Essence by The Woolen Rabbit. A substitute yarn is shown below.