Hydrangea macrophylla
Hortensia, Bigleaf Hydrangea, French HydrangeFamily: Hydrangeaceae
Origin: Japan
. This large shrub is native to Japan and thrives in full sun or partial shade.
It is best to provide Hydrangea macrophylla with regular watering, however too much water can negatively impact the flowers. Ideal soil should be moist but well-drained. It prefers a slightly acidic soil. It is hardy to USDA zones 4-9.
The flowers of Hydrangea macrophylla come in a range of colors from white, off-white, blue, lavender and purple to particularly unusual colors such as red, crimson and vinous, and yellow and orange. The flower heads can be up to 10 inches wide and the plant can grow to an impressive 5-10 feet tall.
For ideal growth and flower production, the shrub prefers full sun in cooler climates and semi-shade in warmer areas. However, it is important to also reduce the intensity of sun during the peak of summer as too much heat can cause bud drop. For best production of flowers, prune the branches in late winter before the growth starts. Regular watering is important due to evaporation in hot summers. For areas where winter temperature below zero is expected or where frequent snow or ice occurs, you can wrap the plant in extra layers.
In cold regions, it is best to grow Hydrangea macrophylla in a pot - protect the pot from direct sun to protect the roots and provide some winter insulation like wrapping insulation or bubble wrap. Provide additional water when the temperature drops below freezing, or when the plant is under water stress. Take extra care with the pot when the temperature is below freezing: watering too much can cause the roots to freeze, damaging the plant.
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