Bigleaf hydrangea Hydrangea macrophylla Blue - Hardy plantEveryone is familiar with the blue hydrangea (Hydrangea macrophylla). This popular beauty is a must have for your garden or balcony. The stunning flowers bloom in the summer and the plant is hardy. This means that you can plant it all year round, as long as freezing temperatures are not expected. Pruning is not necessary unless the shrub gets too big. Plant it in a nice spot in partial shade and keep the soil moist. It's important to water more