On March 25th, 2009, I took a cutting from this Russian blue honeysuckle that was planted as a single sprig in April of 2007. It bore fruit in June of 2008. Our weather at the time was hovering around minus 10 C (15 F) for a high, although it had reached freezing a couple of days before that and rained. However, snow still lay heavily on the ground. The plant showed no external signs of growth. My climate zone borders on 1b - 2a.