The question
Last summer, I planted an 'Endless Summer' Hydrangea bush in a shady corner of my garden, but I was disappointed that the blooms flopped over and thus added no real colour to the garden. They do, however, make pretty cut flowers, so this spring I added another in an empty spot right beside the first. It looks very healthy, but hasn't produced a single bud. Why wouldn't the second one bloom? And is there anything I can do to make the stems stand up so the flowers are actually visible?
The answer
Hydrangeas flop over when they don't have enough light or water. You may not realize that the plant isn't getting enough water if it's in a shady corner (ergo rain shadow), so check this out first. As for the second plant, a lack of blooms might mean that there was a lot of frost kill of the buds, that your plant was over-fertilized by the grower to produce all those leaves or that you may be crowding it. In general, 'Endless Summer' needs morning sun and afternoon shade (that's when the sun is broiling hot); you also can't let it dry out and you can't let it sit in water. As a remedy, why not move both of your plants into more light away from roots and rain shadows and see if they will give you better blooms. Do not fertilize now. Mulch well in late autumn. Only prune out the dead bits next spring.