Nikko Blue Hydrangea (Hydrangea Macrophylla 'Nikko Blue')
A Nikko Blue hydrangea is a type of ornamental shrub that produces large, rounded clusters of blue flowers in the summer. This hydrangea cultivar is known for its vibrant, long-lasting blue blooms, which are highly prized by gardeners and florists alike.
Nikko Blue hydrangeas are part of the Hydrangea macrophylla species and are known for their striking blue color, which is dependent on the soil PH. In acidic soil with a pH of 5.5 or lower, the flowers will be blue, while in alkaline soil with a pH of 6.5 or higher, the flowers will be pink.
These shrubs typically grow to be about 4-6 feet tall and wide, and they prefer partial shade and moist, well-draining soil. They are a popular choice for gardeners looking to add a burst of color to their landscapes, and their cut flowers are often used in floral arrangements.
Here are some tips on how to care for Nikko Blue hydrangea:
Planting: Choose a location with partial shade and well-draining soil. Plant the shrub in a hole that is twice the size of the root ball, and amend the soil with organic matter before planting.
Watering: Keep the soil consistently moist but not waterlogged. Water the shrub deeply once a week, or more frequently during hot, dry weather.
Fertilizing: Apply a balanced fertilizer, such as 10-10-10, in the spring before new growth begins. Follow the manufacturer's instructions for application rates.
Pruning: Prune the shrub after flowering has finished, usually in late summer or early fall. Remove any dead or damaged wood, and cut back the previous year's growth by one-third.
Soil pH: To maintain the blue color of the flowers, the soil pH should be acidic. You can adjust the soil pH by adding sulfur or aluminum sulfate to the soil.
Mulching: Apply a layer of organic mulch, such as shredded bark or leaves, around the base of the shrub to help retain moisture and suppress weeds.
By following these care tips, you can help your Nikko Blue hydrangea thrive and produce beautiful, vibrant flowers.
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