For best results, the shelterwood cut should leave a 60 to 70 percent stocking density. The season of clearcutting appears to have an effect on the regeneration of upland oaks stands. Site quality affects the ability of upland oaks to regenerate. In the above study in south-central Ohio, medium quality sites had higher absolute and relative oak densities 18 to 20 years after clearcutting than did good sites. Once scarlet oak stands are established, thinning increases the growth rate of remaining trees.
Scarlet oak is susceptible to a number of insects and diseases.
Scarlet oak is susceptible to oak wilt caused by the fungus Cerotocystis fagacearum, and infected trees may die within 1 month. Cankers are caused by Nectria spp. Fungi, such as Stereum gausapatum, cause heart rot and enter the bole through branch stubs and fire wounds. Herbicides have been used to control scarlet oak on sites where pine regeneration is desired. In Georgia, three herbicides were tested on scarlet oak.