How To Prune Nikko Blue Hydrangea

May 22, 2024 Post a Comment

How to prune nikko blue hydrangea

If it blooms blue, it's a hydrangea that should be pruned in late summer, as necessary. If it doesn't have blue flowers and it blooms later in the summer (after July 4), it's probably a good candidate for late-winter pruning.

How do you care for a hydrangea Nikko Blue?

The Nikko Blue Hydrangea requires full sun to part shade and prefers moist, well-drained, fertile, acidic soil. In hot climates, hydrangeas will do best with some shade. If you have alkaline soil, be sure to amend your soil to maintain the deep blue color.

What month do you prune hydrangeas?

Trimming should be done immediately after flowering stops in summer, but no later than August 1. Do not prune in fall, winter, or spring or you could be cutting off new buds. Tip-pruning the branches as leaves emerge in spring can encourage multiple, smaller flower heads rather than fewer larger flower heads.

Do Nikko blue hydrangeas bloom new wood?

This cultivar growing 5′-6' tall and 6′-8' wide, prefers part shade and moist, but well-draining soil. The Nikko Blue flowers on the previous season's wood, so it is important not to cut the stems drastically back in the spring.

Can you prune hydrangeas in the fall?

Pruning hydrangeas that bloom on new wood Hydrangeas that bloom on new wood can be safely pruned in late fall once the plants have gone dormant or in early spring. Next year's flower buds won't be formed until late spring the same year they bloom, so there is no risk of removing the buds if you prune in fall or spring.

Can I prune hydrangeas in September?

Hydrangea macrophylla, big leaf hydrangea These plants produce buds in late summer to early fall (August-September) that will form next year's flowers. So prune these shrubs after they finish blooming before August (again, make a heading cut).

How tall do Nikko blue hydrangeas get?

Nikko Blue Hydrangea will mature to a height and width of 4 to 6 feet in a mounded shape. Flowers are produced on the previous year's growth. Hydrangea macrophylla 'Nikko Blue' prefers partial sun conditions in moist, well-drained soils.

Why doesn t my Nikko Blue hydrangea bloom?

The primary reasons hydrangeas don't bloom are incorrect pruning, bud damage due to winter and/or early spring weather, location and too much fertilizer. Hydrangea varieties can be of the type that blooms on old wood, new wood or both. Old wood is the current year's growth and new wood is next year's (spring) growth.

How do you winterize a blue hydrangea?

How to Winterize Hydrangeas

Clean up your fall garden. Late fall is an ideal time to clear an excess of organic matter out of your garden.
Water before the first frost. ...
Lightly prune the plants. ...
Add a thick layer of mulch. ...
Wrap with winter protection.

Should hydrangeas be cut back for winter?

Cut back these shrubs in late winter before new growth begins. Because they need to grow and set buds the same year that they bloom, shrubs that flower on new wood generally start blossoming later than old-growth bloomers, beginning in midsummer and continuing until the first frost.

Which hydrangeas should not be pruned?

Old Wood Bloomers Hydrangeas that bloom on old wood do not need pruning and are better off for it. If you leave them alone, they'll bloom more profusely the next season. But go ahead and gently thin or deadhead. Just remember new growth may come, but that new growth will be without blooms next season.

Should I cut off dying hydrangea blooms?

Removing the spent blooms triggers flowering shrubs to stop producing seeds and instead put their energy toward root and foliage development. This makes plants stronger and healthier, so by deadheading, you'll be doing your hydrangeas a favor.

How can you tell if your hydrangea blooms on old wood or new wood?

You can also check your hydrangea in the fall to see if any buds are starting to push out already. If there are buds already on the branches, then it blooms on old wood. If there are not yet buds in the fall, then it will push them out on new growth the following spring.

Do Nikko blue hydrangeas bloom all summer?

Hugely popular - and deservedly so - Hydrangea macrophylla 'Nikko Blue' features large, rounded flower heads, up to 5 in. across (12 cm), densely packed with rich, deep blue florets. Blooming in early summer for up to 2 months, 'Nikko Blue' is very floriferous and produces new flower stems throughout the summer.

Can Nikko blue hydrangea change color?

Nikko Blue is a cultivar of Hydrangea macrophylla, which is the type of hydrangea that can change its blossom color based on the pH of the soil. A garden soil test will tell you the baseline soil pH so you can decide how to amend the soil (and change the flower color).

Can I cut my hydrangea to the ground?

If your oakleaf hydrangea is very old and woody, take out a few of the oldest, thickest stems all the way to the ground in the early spring to encourage some new growth. Don't cut the entire plant to the ground, as you'll both stress the plant and lose a whole season of blooms.

Can you cut hydrangeas back in October?

But when to prune them? Prune fall blooming hydrangeas, or old wood bloomers, after they bloom in the summer. If you prune old wooded hydrangeas in fall, you are cutting off next seasons blooms. Summer blooming hydrangeas, or those that bloom on new wood, are pruned in the fall, after they stop blooming.

Is Miracle Gro good for hydrangeas?

This water soluble fertilizer helps promote vibrant color and beautiful blooms. It feeds instantly, and is great for use on acid-loving plants, including azalea, camellia, gardenia, hibiscus, holly, hydrangea, and orchid. Use watering can or Miracle-Gro® Garden Feeder™ to apply.

How does vinegar turn hydrangeas blue?

Vinegar is an acidic solution composed of 5% acetic acid and water. A pH of 7 is neutral, and household vinegar has a pH of around 2.4 (which is quite acidic). The theory is, applying diluted vinegar to the soil will lower the pH enough to change the color of your hydrangea blooms.