http://www.garnyzezaclony.cz/?educ=maps13 This Globe thistle (Echinops ritro) should be well and truly dormant during the winter months, not trying to flower! Maybe it will have second thoughts after today’s frost!
Echinops ritro is the ultimate fast food for bees, and you hardly ever see a flower in bloom without a bee feasting on it. Easy to grow, this hardy perennial prefers a sunny situation. After flowering I leave the seed heads for the birds, before cutting down to ground level.