San Antonio’s average last freeze of the season is around Feb. 24, which means it’s time to get your seeds in the ground for your veggie garden.

Texas Tiny bags marked as jewelry have been showing up in the mailboxes of Texas residents but it turns out the bags actually contain seeds. Texans arent the only ones who have received packages of mystery seeds, residents across the nation have reported receiving unsolicited packages that appear to have originated in China, according to a CNN report. To date, packages containing these mystery seeds have also been received in Washington, Virginia, Utah, Kansas, Louisiana and Arizona, according to a press release from the Texas A&M AgriLife Extension Service. If you do receive a bag of the mystery seeds, do not throw them away. It could be a scam, or it very well could be dangerous, said Agrilife extension horticulturist Larry Stein.