Send one or two 3-inch squares of sod containing 1 inch of attached soil. Do not send completely dead grass. Wrap each sample in one thickness of slightly dampened toweling, then in dry newspaper. Clear photographs of the lawn are also helpful. Fleshy specimens such as vegetables, fruit, or mushrooms should be as firm as possible and show early and intermediate symptom development.
Wrap specimens separately in paper towels or newspaper.
Do not put in plastic. Pack with sufficient padding to avoid crushing. Packing Keep plants cool and moist before shipping. Mail as soon as possible after collection. Mail specimens early in the week to avoid delay in the post office over weekends or holidays.