70-80 days. If you're looking for a multi-season, high quality crown broccoli, Millennium is for you. Crops of perfectly domed, light green to blue green heads, 4-5 inches across have a very fine bead and remarkably high quality. The highly adaptable plants develop an upright architecture, are heat tolerant and retain prime flavor and color in a wide range of conditions. In fall and winter, the crops have unsurpassed field holding and excellent performance against waterlogging.