Scavenger Hunt GDD - Drexel University

Prickly Russian thistle can be planted in late fall or early spring. Optimal temperature for germination is 44-50 °F (6.7-10°C), but it can germinate in virtually any temperature once it overwinters. Prickly Russian thistle should be planted in a weed free bed as it is a poor competitor and shade intolerant. ................
................