Cold Resistance. Plant Cold Hardiness: A study in New England determined that a plants hardiness rating varies by about 10 degrees from winter to winter. Best Dating Sites Rating Online dating is a subjective experience, the best approach is to sign up for multiple sites. X Weibo and Align Technology have best-possible 99 Composite Ratings. Daniel Levine paid $5,000 to the dating service Master. Levine posted negative reviews on Google…