Mistakes Everyone Makes When Planting Hydrangeas

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Hydrangea Happiness How to Grow Hydrangeas Home, Garden and Homestead


Hydrangeas are beautiful flowering plants that can add a touch of elegance to any garden. However, many people make common mistakes when planting and caring for hydrangeas, which can prevent them from thriving and blooming to their full potential. In this article, we will discuss some of these mistakes and provide tips on how to avoid them.

1. Choosing the Wrong Location

One of the biggest mistakes people make when planting hydrangeas is not choosing the right location. Hydrangeas prefer partial shade, so planting them in direct sunlight can cause their leaves to wilt and their flowers to fade quickly. On the other hand, planting them in deep shade can prevent them from getting enough sunlight to bloom. It’s important to find a location with dappled sunlight or morning sun and afternoon shade.

2. Improper Soil Preparation

Hydrangeas thrive in well-drained soil that is rich in organic matter. Before planting, make sure to prepare the soil by adding compost or well-rotted manure to improve its fertility and drainage. Avoid planting hydrangeas in heavy clay or sandy soil, as these can retain too much or drain too quickly, respectively.

3. Overwatering or Underwatering

Another common mistake is improper watering. Hydrangeas require regular watering, especially during dry spells. However, overwatering can lead to root rot and other diseases, while underwatering can cause the plants to wilt and their flowers to droop. It’s important to find the right balance by providing adequate moisture without drowning the plants.

4. Pruning at the Wrong Time

Pruning hydrangeas at the wrong time can result in a lack of blooms. Different hydrangea varieties have different blooming habits, so it’s important to know when to prune. For example, hydrangeas that bloom on old wood should be pruned immediately after they finish flowering, while those that bloom on new wood can be pruned in late winter or early spring.

5. Failing to Mulch

Mulching is important for hydrangeas as it helps to conserve moisture, regulate soil temperature, and suppress weed growth. Failing to mulch can result in the plants drying out quickly and competing with weeds for nutrients. Apply a layer of organic mulch, such as bark chips or compost, around the base of the plants, taking care not to bury the stems.

6. Using the Wrong Fertilizer

Hydrangeas have specific fertilizer requirements, and using the wrong type of fertilizer can harm the plants. Avoid high-nitrogen fertilizers, as these can promote leaf growth at the expense of blooms. Instead, use a balanced fertilizer with equal amounts of nitrogen, phosphorus, and potassium, or choose a fertilizer specially formulated for hydrangeas.

7. Neglecting pH Levels

The pH level of the soil can affect the color of hydrangea flowers. Acidic soil (pH below 7) produces blue flowers, while alkaline soil (pH above 7) results in pink flowers. It’s important to test the soil’s pH and adjust it accordingly to achieve the desired flower color. Adding aluminum sulfate or lime can help lower or raise the pH, respectively.

8. Ignoring Pests and Diseases

Hydrangeas are susceptible to pests and diseases, such as aphids, powdery mildew, and leaf spot. Ignoring these issues can result in stunted growth and poor blooms. Regularly inspect the plants for any signs of pests or diseases and take appropriate measures, such as using insecticidal soap or fungicides, to control and prevent further damage.

9. Not Providing Adequate Support

Some hydrangea varieties, especially the larger ones, require support to prevent their stems from bending or breaking under the weight of their flowers. Not providing adequate support can result in a messy and unkempt appearance. Use stakes or a trellis to support the plants, ensuring they are securely in place without damaging the roots.


By avoiding these common mistakes when planting hydrangeas, you can ensure that these beautiful flowering plants thrive and bloom to their full potential. Remember to choose the right location, prepare the soil properly, water correctly, prune at the right time, mulch, use the appropriate fertilizer, adjust pH levels, address pests and diseases, and provide adequate support. With proper care, your hydrangeas will reward you with stunning blooms year after year.