Hydrangeas - Knowledgebase Question

Ballwin, Mi
Avatar for jamiepowells
Question by jamiepowells
July 1, 2010
I was given a hot house Hydrangea about 5 years ago. I planted it outside and it grows large every year but never ever blooms. I have fertilized with special chemicals to promote blooms and still no blooms. Do you think there is anything that can help this plant bloom?

Answer from NGA
July 1, 2010
Your hothouse or florist's hydrangea is a big leaf hydrangea. Big leaf hydrangeas produce flowers on new shoots which develop on old wood. If your hydrangeas die down to the ground during the winter months, or if you prune them all the way down, there will be no old wood from which new flowering shoots can develop. They may never bloom for you! Endless Summer hydrangeas bloom on either new or old wood so even if they die down to ground level every year you will still get loads of blooms. May it's time to replace your non-blooming hydrangeas?

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