How to care for cut hydrangeas so they last as long as possible in a vase

Cut hydrangeas are one of the most luxurious summer flowers. Their large, dense inflorescences instantly add elegance to a room, but they require special care. If you follow a few simple tips from professional growers, hydrangeas can delight with their beauty for weeks.

Photo: Tacitus Archive

1. Trim the stem before placing in the vase

Before placing your hydrangea in water, cut about 2 to 3 cm off the stem at an angle using sharp secateurs. It is recommended to renew the cut every two days, while changing the water. This helps the flower to continuously absorb water.

2. Remove the leaves from the lower part of the stem

Remove any leaves that are below the water level. They encourage the growth of bacteria, which degrades the water quality and reduces the flower's ability to absorb moisture. If there are a lot of leaves, you can leave just the top few. However, it is best to say goodbye to the green leaves altogether, as this helps the flower direct more water to the inflorescence itself.

3. Hydrangeas need a lot of water

Unlike many other cut flowers, hydrangeas use a lot of water. Choose a clean glass vase and fill it about two-thirds (2/3) full with fresh water. Check the water level daily as hydrangeas use up water very quickly.

Professional advice: For freshly cut hydrangeas, after the stem has been cut, the flowers can be placed in hot, but not boiling, water. This helps improve water uptake through the woody stem.

4. Choose a suitable location

Place hydrangeas in a cooler room, away from direct sunlight, radiators, and other heat sources. It is also not recommended to place the vase next to fruit. Ripe fruit releases ethylene, which accelerates the aging of flowers.

What to do if the inflorescence becomes soft and starts to bend?

The hydrangea inflorescence should be firm and bushy. If it becomes soft or begins to droop, this does not mean that the flower has been lost. Most often, the hydrangea has simply lost moisture, not aged.

Suggestions on what to do:

• Restore the stem cut with sharp secateurs.
• Place the bottom of the stem in hot water.
• Leave the hydrangea in a cool place for several hours until the inflorescence regains its firmness.
• Once the flower has recovered, continue to care for it in a vase with fresh water.

This method often helps revive even seemingly wilted hydrangeas.

Another method you can try is to soak the flower in cool water for 20 to 60 minutes. Unlike most cut flowers, hydrangeas can absorb moisture through the surface of the petals. This method can often help restore the firmness of the flower if it has lost moisture.

How long do cut hydrangeas last in a vase?

With proper care, cut hydrangeas usually stay fresh for 7 to 14 days, but some varieties can last up to three weeks. Their longevity depends largely on the variety, the maturity of the flower, and daily care.