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How Often Do You Water Hydrangeas? (Prevent Overwatering & Underwatering)

Hydrangeas are also known as morning sunshine for two reasons. The first one is they need partial sun and the second reason is the gorgeous and mesmerizing look they have as the first thing to look at in the morning while sipping your coffee.

Did you know that the word “hydrangea” comes from the Greek “Hydor” which means water? So watering is the key to growing these colorful varieties of flowers. 

The most popular hydrangeas are french, mophead, lacecap, endless summer, peegee, blue, and pink. My favorite is french hydrangea because it is more traditional, large in look, and blossoms vibrantly.

How Often Do You Water Hydrangeas?

Hydrangeas need deep watering 3 times a week. Water is encouraging the root to grow and the flower blooms according to the amount of water you add. 

Even though hydrangeas are water thirsty, you don’t have water every day. Growing hydrangeas in pots need constant watering and adding a little bit every day won’t damage the flower.

Just know that everything excessive can kill the plant. I’ll explain down below the underwatering or overwatering and how should you water this breed of flowers. 

How to Water Hydrangeas?

Watering hydrangeas are pretty easy, you just have to know how, here are some factors that have an effect on the amount of watering. 

  • During Season– in summer hydrangeas need more water because the sun evaporates water faster. This process is called transpiration. During that time, water the plant thoroughly and deeply 3 maybe 4 times a week. During winter times, the strength of the sun isn’t that intense, so decreasing the amount of water 2 times a week or once is a must.
  • Soil Type– if you have fast-draining soil, hydrangeas obviously need more water than those slow-draining soils. 
  • The Relative Extent of the Plant– hydrangeas need water according to their size, the bigger the plant is, the more water is required.
  • Apply Mulch– the moisture is very much needed in hydrangeas, so applying mulch to keep the moisture will be highly effective.

Watering Newly Planted Hydrangeas

Newly planted hydrangeas are super sensitive to hot and drought weather. The very first thing you need to do is plant them in effective moisture-retaining soil that is drained well. Make sure that the place you are planting doesn’t get filled with water during rainfall. 

Water three times a week and don’t forget to use 2-3 inches of hardwood mulch,

Watering Developed Hydrangeas

Once the hydrangea is well established, getting a hose that will infiltrate deep into the water is important. The roots get bigger and bigger each day, so you need deep watering, so it can spread evenly and easily to the root.

Watering Hydrangeas in Pots

Hydrangeas in the pot are the easiest to water. Always choose a ceramic pot because it keeps the moisture for longer. Dark colors tend to absorb more heat and water evaporates quickly. 

When you plant hydrangea in the pot, make sure it is all around the pot, not only in one area. Never, ever let the water sit in the bottom of the pot, over time the root rotting will happen.

Sings of Underwatering

Underwatering in hydrangeas shows up in the fastest way, involving wilting on hot summer days. The soil needs to be moisturized all the time by using mulch and less water. Here are some signs that your hydrangeas are suffering from underwatering.

  • The leaves will turn yellow or brown.
  • Too many leaves are falling off.
  • The hydrangea plant begins to wilt.
  • Hydrangeas have been prevented from growing or developing as they are supposed to.  

Signs of Overwatering

The tricky part about overwatering is showing the same sign as underwatering, so it will be very hard to notice the difference. Apart from that, there are more signs, let’s just go over them.

  • Leaves suddenly change color and look sloppy.
  • Leaves dry up pretty quickly until they fall off.
  • It stops growing in the peak season when it supposes to get bigger.
  • The nasty smell is coming from the root, this is the sign of root rotting due to overwatering.
  • Sometimes deep watering and poor drainage cause hydrangeas’ branches to become weaker.
  • The soil is soaking wet, you don’t have to soak the plant, just keep it moisturized.
  • Pick three days a week and try to stick with it. Avoid random watering because you won’t be able to see hydrangeas’ full blossom.


Can You Transplant the Hydrangea from the Garden Indoors?

Yes, you can, but do I recommend it, heck no. The reason is that garden hydrangeas are durable and immune to frost, rain, and sun exposure. So, changing their place because you want to for no good reason can be the death of the plant. 

So, the garden hydrangeas don’t go along well indoors, I mean you can try, but you won’t get the same blossom from the plant. 

How Long Can Hydrangeas Go Without Water?

Hydrangeas are thirsty flowers, they won’t be able to survive for more than 5 days without water. The yellow leaves will start to give you “water me” sings. However, the major component depends more on weather conditions.

Where is the Best Spot to Plant Hydrangeas?

Hydrangeas grow best in full sun exposure for about 4-6 hours every day. The good thing is that the plant can blossom even in the shade during hot days as long as they get morning or afternoon sunlight.

A Brief Recap 

Hydrangeas can be considered a water thirst flower type because they cannot live without water for more than 5 days. Watering the plant 3 times a week on hot days will be ok. 

Be careful not to underwater or overwater the plant, the leaves will change their color immediately, read the signs carefully. 

The watering depends on whether hydrangeas are newly planted, established, or planted in the pot. Applying mulch to keep moist of the root and exposing it to sunlight for at least 4 hours a day is essential.

Keep growing initiate.

Further Reading

Ding-dong, the assignment time is kicking the door, I have some other watering tips and tricks, find out how often should you water ferns or how frequently bamboo need watering. If you like begonias, then you should know often should you water begonias.

Natalia Michalska

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