Thanks simon for link, thats sounds correct that brokaw sells seed rootstock to retail nurserys at a lower cost, im thinking to keep cost down and let nurserys have room for a little profit,i personaly have 3 diff clonal rootstock on order so i will learn first hand if perform better than on zutano seeds i normally use, they will be planted in the central valley of cali in virgin soil so it will take me a few years to figuare out if one does better over the other.