At the end of next accounting period, bad debts are estimated again and the balance in the allowance account is adjusted. There are two commonly used methods to estimate and adjust the balance of allowance account: 1  Percentage of Sales Method.  Percentage of Receivables Method.
Comfrey has been cultivated as a green vegetable and has been used as an herbal medicine for more than 2,000 years. Comfrey's original name, knitbone, derives from the external use of poultices of its leaves and roots to heal burns, sprains, swelling, and bruises. In Western Europe, comfrey has been used topically for treating inflammatory disorders such as arthritis, gout, and thrombophlebitis, and internally for treating diarrhea.
Comfrey is a hardy, robust perennial good in Zones 2-9 so it can be planted everywhere in the United States except northern Alaska and the southern tip of Florida. Though people do have success growing comfrey in southern Florida. Be sure to plant it in partial shade and not in full sun in hot climates.