Hydrangea macrophylla 'Nikko Blue'
Every now and then I hear from fellow hydrangea (Hydrangea macrophylla
cvs. and H. serrata
cvs., USDA Hardiness Zones 5–9) fans who divulge their heartbreak to me over a prized shrub that will not flower. They’ve patiently waited to see if this will be the summer that their mophead or lacecap flowers will appear, only to be met with disappointment. This problem is not uncommon and can be remedied easily. All they need to do is understand how these woodland plants grow and select those varieties that are hardy in their climate.