^ yancey-bragg, n'dea (27 july 2020). "people in nearly 30 states mailed unsolicited packets of seeds that may be from china, officials say". usa today. retrieved 23 april 2021. ^ "buying and selling plants and seeds online". aphis (animal and plant health inspection service). usda (united states department of agriculture). retrieved 2 march 2021.

^ yancey-bragg, n'dea (27 july 2020). "people in nearly 30 states mailed unsolicited packets of seeds that may be from china, officials say". usa today. retrieved 23 april 2021. ^ "buying and selling plants and seeds online". aphis (animal and plant health inspection service). usda (united states department of agriculture). retrieved 2 march 2021.