This is a fall pre-order. Arracacha offsets will ship in October, separate from any other items that you order. You will need to pot the offsets to keep them alive through the winter.
Puerto Rico is a Sacred Succulents introduction, collected in, unsurprisingly, Puerto Rico. Arracacha was introduced to the Caribbean in the 1800s and this one variety has been grown in the mountains of Puerto Rico ever since. This variety really needs about 12 months to develop a good yield.
Offsets will be sent untrimmed, since they mail better that way. You will want to cut back the base of the offset to about two rings before rooting, as this promotes better root development.