The only explanation for the blooms finally turning blue after lower the pH of the soil is that this hydrangea did not bloom last year. Maybe if it would have bloomed they would have……
Bren Haas is the creator of GardenChat which is the first online gardening social community using social media. Her website features gardening tips and tricks, recipes, travel ideas, product reviews, and social media how-to help from her personal and unique experiences.