Are Hydrangeas Annuals Or Perennials?

Are hydrangeas annuals or perennials shrubs that you can expect to bloom every year, or they die after blooming one season?

If you want a flower that spells out an appeal, by all means, hydrangea flowers are the best—large globes of bloom cover this shrub in summer and spring.

They may look like they are high maintenance, but hydrangea care is minimal, and with the right conditions, they are easy to grow.

What Are Hydrangeas?

Before we look at growing this flower, let’s get to know exactly what it is.

The hydrangea plant flowers in spring and summer. They grow fast, reaching up to 15 feet in height. They produce a large bloom that attracts many people to grow it.

Hydrangeas thrive in zones 3 to 7 as perennials with flowers starting in spring to last throughout summer into early fall. Hydrangea flowers are helpful as a foundation plant in your landscape.

What Are Hydrangeas

Are Hydrangeas Annuals Or Perennials?

Hydrangeas are perennial shrubs; this means they come back every year. That said, in some cases when grown in greenhouses or sold off as gift plants, they grow as annuals because they don’t come back after harvesting the bloom.

But some hydrangeas are indeed root-hardy. Smooth hydrangeas, panicle hydrangeas, and oakleaf hydrangeas perform well in zones 5 to 9.

One of the least frost-resistant hydrangeas is the big leaf hydrangea, which does not do well in zone 5 unless its container grows and moves inside during winter. The main reason why hydrangeas fail to survive is that the pots dry out too quickly, causing dehydration and later death of the plant.

If you receive your plant as a gift, transfer it immediately to a big pot using well-drained soil and keep the soil moist with regular watering.

When Do Hydrangeas Bloom?

Hydrangeas are woody perennials that go through a dormant stage in winter, grow back in spring, shooting new growths, and producing flowers throughout spring and summer.

When Do Hydrangeas Bloom

Growing Hydrangeas

Learning the basics of growing these flowers will save you time and resources. Choose a proper location, get the suitable soil, plant correctly, and you will increase your likelihood of enjoying large, colorful blooms for years to come.

  • The Best Time To Plant Hydrangeas.  The most suitable season to plant hydrangeas is in the fall, followed by early spring. This is to give the shrub plenty of time to establish a robust root system before flowering. Plant it in the morning or late afternoon to protect it from heat stress. Keep new plants adequately watered until found.

  • Location. Hydrangeas love the bright morning sun, but they hate the afternoon sun. The ideal location to plant them is in a sheltered spot with sunny mornings and shady afternoons. Avoid planting this flowering plant directly underneath trees; this can lead to competition for water and nutrients. High winds can also damage leaves and destroy these flowers.

  • Soil. Hydrangeas do well in rich, healthy soil that has lots of organic material. Good drainage is essential to ensure the ground does not hold too much water. Even though these flowers like moist soil, they cannot tolerate being overwatering. Poor draining soils cause root rot, thus killing the plants. Consider mixing heavy soil with plenty of compost before planting to improve its quality.

FoxFarm Ocean Forest Potting Soil – Organic Plant Fertilizer – 38.5 Quart

Types Of Hydrangeas Both Annuals And Perennials

There are different types of hydrangeas grown in the United States. They include:

    • Bigleaf Hydrangea – these are the most common of all kinds. They excel in zones 5 through 9.

    • Oakleaf Hydrangea – thrive in warmer zones, especially if you live in zone 5 or warmer. This type is outstanding as it can withstand the heat of summer.

    • Smooth Hydrangea – These are also known as snowballs due to their large white clusters of blooms. They are a perfect choice in cold climates.

    • Panicle Hydrangea – They do well in zone 3, growing tall up to about 15 feet tall.

    • Mophead Hydrangea – This type features large, rounded blooms

    • French Hydrangea – This type competes with the big leaf hydrangea and is loved for its prominent, vibrant colors.

    • Endless Summer Hydrangea – It was discovered in the 1980s and could withstand the cold winters of zone 4.

    • Peegee Hydrangea – While often trained to look like a tree, the Peegee (P.G.) is technically the Grandiflora cultivar from the panicle hydrangea family.

    • Lacecap Hydrangea – This type has an attractive lacy, delicate look with large flowers surrounding smaller buds.

    • Blue Hydrangea – They are blue because of the soil they grow in. You can purchase this blue hydrangea, and it blooms a different color if the soil is foreign.

    • Pink Hydrangea – Its flowers range from hot pinks to barely blushing and can grow in several places across America.

You Can Alter Your Hydrangea Flower?

Yes, it is possible to change these flowers’ colors, but not at once. Color change takes weeks or even months. After planting, please wait for the plant to be at least two years old to allow it a chance to recuperate from the shock of planting. It is possible and easier to change blue flowers to pink than vice versa.

It’s not every hydrangea type that changes color; some types like bigleaf hydrangeas (H. macrophylla)—especially the Mophead and Lacecap types—are tough to change color and only do so based on the soil pH.

Acidic soils with a pH of greater than 5.5 produce pink flowers, while those with less than 5.5 produce blue flowers. The soil’s pH does not change the white flowers.


Are hydrangeas annuals or perennials has been answered in the above writeup, and additional information about this plant provided. As perennials, hydrangeas go dormant during winter with a promise of coming back again in spring. It would help prepare your plants for the winter season by pruning and protecting them from harsh frost. This determines how well your plants will thrive next season.

If the type of hydrangea you have planted can tolerate winters, you don’t have to protect them. Instead, wait until spring when they shoot again.

What are you waiting for – get your hydrangea started and enjoy its lush foliage and impressive blooms! It’s a flower worth growing.


Do hydrageans come back every year?

Yes, you can expect your hydrangeas to return each year. The flowers will be bigger and more abundant than the previous year. There are many different varieties that bloom at different times of the year. Look for a variety that blooms in spring.

Are they perennial?

Yes, Hydrangeas are perennial shrubs. All members of the genus Hydrangea are perennials, but there are many different species and cultivars with varying characteristics. They can be grown in a wide range of soil types, climates, and growing conditions. There are many species and cultivars of Hydrangeas that are available to gardeners today.

They come in an amazing array of colors, sizes, and forms. Some have long spikes of blooms, while others have short, feathery foliage and tiny flowers.

Do they like full sun?

A lot of people are afraid to bring their hydrangeas out into the sun, but the best planting area is one that receives full sun for this particular type of plant.

Can you divide them?

You can always prune back and divide your hydrangeas every two years. In fact, if you don’t do it, they will just keep getting bigger and bigger and bigger.

How long do they live?

A hydrangea can live for several decades, depending on the variety. It is recommended that hydrangeas be pruned every year, either in the spring or fall. Pruning allows the plant to get more light and allows the plant to grow into its full potential.

Do hydrangeas grow better in pots or in the ground?

They’re generally grown in the ground. It’s not always possible to do this, but if you can then it’s best to plant them in early spring when the ground is warm and wet. They’ll need about 12 months of growing time before they flower in the summer.

How popular are hydrangeas?

Hydrangea are very popular, easy to grow and come in many varieties. They can be found all over the world. In the garden, they will grow anywhere from 3-6 feet tall. Some of the most popular varieties are pink hydrangea, double pink, white hydrangea, purple hydrangea and many more.