Adding Sulphur to Endless Summer Hydrangea - Knowledgebase Question

Chicago, IL
Avatar for cg34
Question by cg34
June 30, 2006
How often should I add sulphur to my hydrangea to make the flowers blue. Thanks

Answer from NGA
June 30, 2006
You can treat with sulphur in February or March (while the flower buds are forming) to ensure blue flowers each summer. Best wishes with your hydrangea!

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