Popsugar Living Spring Interesting Facts About Hydrangea 9 Facts Every Hydrangea-Lover Needs to Know June 19, 2018 by Maggie Winterfeldt View On One Page Photo 3 of 9 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 3 Hydrangeas Produce Flowers From Early Spring Through Fall Hydrangea's flowers peak for about two to three weeks during the season, and it's normal for their color to change as they age. Previous Next Start Slideshow SpringGardeningFlowers