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How Long Will Cut Sunflowers Last in a Vase? (Answered)

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Sunflowers are one of the brightest and beautiful flowers. People grow sunflowers in their houses for getting access to these bright flowers and their beauty. But like most cut flowers, you must take proper care to make sunflowers live long.

So, you might be confused about how long cut sunflowers will last in a vase. Growing flowers in the soil or garden and growing in vases are two different situations. So, if you want to grow cut sunflowers in a vase, you must know how long they will last and the growing process.

How long will cut sunflowers last in a vase?

Cut sunflowers will last for six to twelve days. How long cut sunflowers will last depends on how fresh the cut sunflowers are. Moreover, the caring process also affects the lasting time of cut sunflowers. If you choose strong, and straight stems with perky flowers, the flower will last long.

The lasting time of cut sunflowers is also different according to the use of water. So, let’s see how long cut sunflowers will last if you grow them with or without water.

Cut sunflowers last in water:

Sunflowers are thirsty plants. They need sufficient water to live and grow. So, cut sunflowers must need water to last. If you keep a sunflower in water, it will live for at least 6 to 12 days.

But keep the root in the water and don’t let the flower and leaves submerge in the water. Moreover, if you keep cut sunflowers in a proper environment with water, they will last more than 12 days.

Cut sunflowers last without water:

Cut sunflowers will not last long without water. Generally, sunflowers require water to grow. Similarly, cut sunflowers will also need water to live. Cut sunflowers might last a day or two without water, but they will not live without water.

Why are my cut sunflowers drooping in the vase?

Sunflowers can live in the vase and make the environment bright. But when cut sunflowers start drooping, the overall beauty and brightness might become gloomy. So, if you want to stop glooming of cut sunflowers, you have to know the reasons behind it. 

Let’s see the possible reasons –


Cut sunflowers need enough water to live and grow. You don’t have to provide excess water. But regular watering is essential for cutting sunflowers. If they don’t get enough water, they will be dehydrated and start drooping.


Sometimes, some sunflowers get a large height. Moreover, the flower of the plant is bigger. So, it’s normal that the flower will start drooping when it gets bigger. So, drooping might always not be a problem. It might droop because of its large size.

Inappropriate brightness:

When you want to grow a cut sunflower, you must know the appropriate brightness the flower needs. If you keep the cut sunflower in the direct sunlight for a long time or in a shaded area for a long time, it can droop.

Other problems:

Some other problems might also be responsible for the cut sunflowers’ drooping. When the soil has insufficient moisture, the flower will droop. Moreover, sometimes, fungal infection can cause the cut sunflower drooping.

How to keep cut sunflowers from drooping and last longer in a vase?

You might have already known the reasons for drooping cut sunflowers. So, you have to prevent or stop the reasons to make cut sunflowers last longer in a vase. Let’s see how you can keep cut sunflowers from drooping and last longer in a vase.


When you want to cut sunflower to plant it in a vase, you have to water thoroughly in the sunflower plant before some hours of cutting. Picking dry sunflower will make the plant become dehydrated. As a result, the cut sunflower will droop.

So, if you want to make the sunflower last longer in a vase, you have to keep the plant hydrated. The flower will remain fresh for a long time.

Timing of cutting:

When you collect the cutting of sunflower, you have to choose a perfect time to cut. For example, if you cut the sunflower in direct sunlight or in the middle of the day, the sunflower is already dried out.

If you cut a sunflower in the early morning, they will remain still cool and hydrated. So, try to cut the sunflower when the plant is cool and is not dehydrated.


When you cut the sunflower stem, you have to preserve it in the water immediately. Otherwise, the cut sunflower will not last long. If you keep the cut sunflower in an open place or without water, it will droop. 

So, you have to keep the cut stem in the water just after cutting it from the plant.

Changing the water:

You have to change the water in which you will keep the cut stem. You can change the water every day or between every two days. If you don’t change the water regularly, bacteria might invade the root and drooping might start.

So, it will be better you change the water regularly while preserving the cut sunflower.

Appropriate environment:

When you will plant the cut sunflower in a vase, you have to maintain an appropriate environment. For example, you have to keep the plant in proper temperature and sunlight. Moreover, you have to keep the soil moisture. 

Besides, a good drainage system will also be beneficial.

How to display cut sunflowers?

If you want to grow sunflowers in vases, you have to display them well to make them look good. Otherwise, the flowers will not look good and enhance the beauty of the environment. So, let’s see how you can display cut sunflowers.

Keep in water:

Keep the cut sunflowers in water immediately after cutting from the plant.

Plant the cut stem:

Plant the cut stem in the soil of a vase and place the vase in a cool area.

Away from direct sunlight:

Keep the vase away from direct sunlight and heat.

Remove spent leaves:

Remove spent leaves to make the sunflower look fresh.

Water the sunflower:

Water the sunflower regularly so that the plant keeps hydrated and straight.

How much water should I put in a vase of sunflowers?

Sunflowers are one of the plants that need sufficient water. You have to keep them hydrated always. For example, when you water the sunflower in a vase, you have to keep water at the height of 3/4th of the vase.

So, you might know now that you have to provide enough water. You can apply 2 gallons of water per week to the sunflower in a vase. Otherwise, the plant will dry out and will not last a long time.

Do sunflowers in a vase need sunlight?

Sunflowers in a vase don’t need too much sunlight. When you plant a sunflower in a vase, you have to ensure proper temperature other than the sunlight. You might think that sunflowers in a vase will need sunlight as they need in the garden.

But they will not need direct sunlight when you put them in a vase.

Moreover, you have to keep away the sunflower vase from direct sunlight. You can display the sunflower vase in a cool area. This doesn’t mean that you have to keep the vase in a dark place.

You can keep the vase in a shaded and cool area where direct sunlight will not affect the sunflower.

Will sunflowers bloom if you cut them?

Yes, sunflowers will bloom if you cut them properly and keep them in the proper environment. You have to follow some instructions when you cut sunflowers and plant them in a vase of water.

For example, you have to keep them hydrated, out of direct sunlight, in a cool area, and with proper humidity and moisture.

If you follow the instructions properly, the sunflower will still bloom after you cut it and plant it in a vase. But if you don’t follow the rules and keep them without water, sunflowers will not bloom anymore.

How long do cut sunflowers take to open?

It takes 2 to 3 days for cut sunflowers to open. Generally, when we cut sunflowers and put them in the vases, they take a couple of days to grow and open.

But you must ensure that the cut sunflowers have sufficient water. If you keep the cut sunflower in the water, you must add 5 inches of water. Moreover, you have to change the water regularly and keep the vase in a cool area.

So, if you take good care of the cut sunflower, it will take 2 to 3 days to open.

Final Thoughts:

Cut sunflowers will last for 12 days or more in a vase if you take care of them properly. You have to follow some processes while cutting sunflowers and growing them in a vase. They will need water, moisture, a shaded area, and an appropriate environment. Then they will last for 6 to 12 days.

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