Hydrangea Care

The Hydrangea (Hydrangea) is a popular garden plant known for its exuberant flowering and rich colors. These beautiful plants can be found in many gardens and are among the most beloved types of garden plants. The hydrangea is not only beautiful to look at, but also relatively easy to maintain, provided you apply the proper care. In this comprehensive blog, we share tips on caring for the hydrangea. From watering to location, from flowering time to diseases and fertilization: here you will find everything you need to know to keep your hydrangea healthy, strong, and blooming beautifully.

Hydrangeas Water Watering

Watering is one of the most important parts of caring for hydrangeas. The name Hydrangea is derived from the Greek word for "water", and not without reason: this plant has a high water requirement.

Ensure that the soil around the hydrangea is always slightly moist, but prevent water from standing. Preferably water in the morning or evening so that the plant can absorb it optimally. Use rainwater if possible, as tap water contains lime and this can affect the acidity of the soil.

During dry summers, it may be necessary to water daily, especially for potted plants. Also take the location into account: hydrangeas in sunny locations dry out faster than those in partial shade.

Watering Hydrangeas in Winter

In winter, the water requirement of hydrangeas is significantly lower. Plants in the open ground generally do not need extra water during the cold months. Only in the event of prolonged frost without precipitation should you consider giving a little water carefully when the thaw occurs.

Hydrangeas in pots are more susceptible to drying out, even in winter. Ensure that pots are not placed in a draft and check the soil moisture occasionally. Water sparingly when the soil is completely dry and there is no frost.

Watering Hydrangeas Indoors

Some hydrangeas are sold as houseplants. This indoor variety requires specific care. Place the plant in a bright spot, but not in direct sunlight, and keep the soil slightly moist.

Ensure that the plant is not placed in a room that is too warm or dry. Avoid placing it close to a heater and ensure good air circulation. Indoor hydrangeas usually bloom for only one season and can then be moved outdoors.

Hydrangea Location

A good location is essential for a healthy and profusely blooming hydrangea. These plants love light, but not bright midday sun. A spot in the partial shade, with some morning sun and shelter from strong winds, is ideal.

The soil must be well-draining and rich in humus. Hydrangeas prefer slightly acidic soil, especially the blue varieties. If the soil is too calcareous, the blue color will slowly fade to pink or purple. You can prevent this by maintaining the acidity level with special soil conditioners.

Hydrangea Flowering Time

The flowering time of hydrangeas varies by species, but generally they bloom between June and September. Some species, such as Hydrangea paniculata, even bloom well into October. The flowering time can be influenced by factors such as pruning, nutrition, and location.

Do not remove spent flowers too early in the season; these can offer protection against night frost. In the spring, you can then carefully cut them away.

When to Plant Hydrangeas?

The best time to plant a hydrangea is in the spring (March-April) or autumn (September-October). During these periods, the soil is moist and the roots can develop well before the growing season begins.

Dig a spacious planting hole and mix compost or peat into the soil. Place the hydrangea at the same depth as it was in the pot and water generously after planting. Be careful not to plant it too deep, as this can cause root rot.

Hydrangea in a Pot

Hydrangeas can also be kept perfectly well in pots, provided the pot is large enough and drains well. A pot with a diameter of at least 40 cm is recommended. Use a light, moisture-retaining potting soil and place the pot in a spot with morning sun or partial shade.

Watering is especially important for potted plants: they dry out faster and nutrients wash away more quickly. Therefore, add fertilizer regularly during the growing season and protect the pot against severe frost.

Moving a Hydrangea

Do you want to move a hydrangea? If so, preferably do this in the autumn or early spring, when the plant is dormant. Dig out the root ball with plenty of room so that you take enough roots with you. Transplant the hydrangea at the same depth as before and water generously.

After transplanting, it is important to water the plant regularly and protect it from wind and strong sunlight. A layer of mulch around the base helps retain moisture and keep the roots warm.

Fertilizing Hydrangeas

Regular fertilization is important for strong growth and abundant flowering. Use a specific hydrangea fertilizer, tailored to the nutritional needs and acidity of the plant.

Fertilize twice a year:

• In spring, at the first new growth.

• In summer, to support flowering.

Do not use lime-rich fertilizers on blue hydrangeas, as these can affect the color. For an intense blue color, you can add aluminum sulfate.

Hydrangea Cuttings

Hydrangeas are easy to propagate via cuttings. This is a fun and simple way to obtain multiple plants.

Here is how you do it:

1. Cut off a young, non-flowering shoot in June or July.

2. Remove the lower leaves and leave only the top few.

3. Insert the cutting into moist potting soil and cover with plastic or a mini greenhouse.

4. Place in a bright spot out of the sun and keep the soil slightly moist.

After 3 to 4 weeks, the roots will start to grow. You can plant out the young plants in the autumn.

Read more about propagating a Hydrangea in our blog: Hydrangea Cuttings!

Hydrangea Toxic

Although beautiful, the hydrangea is mildly toxic to dogs and cats, among others. All parts of the plant: flowers, leaves, and stems, contain substances that can cause mild to moderate poisoning if ingested. Symptoms are: vomiting, diarrhea, and lethargy. Therefore, do not let your pets nibble on hydrangeas and always consult a veterinarian if in doubt. Place hydrangeas out of reach of curious animals.

Hydrangea Nutrition

In addition to fertilization, supplementary nutrition is important for the health of your hydrangea. Organic materials such as compost or cow manure improve soil structure and ensure a long-lasting nutrient release.

Apply a layer of compost around the base of the plant in the spring. In the summer, you can give liquid plant food to stimulate flowering. Be careful not to over-fertilize: too much nutrition leads to lots of leaves but few flowers.

Pruning Hydrangeas

Pruning is important for maintaining a beautiful shape and abundant flowering. Each type of hydrangea has its own pruning method. In our extensive blog [Pruning Hydrangeas] you can read exactly how and when to prune your hydrangea.

Hydrangea Diseases

Hydrangeas are generally strong plants, but can still suffer from diseases and pests. Common problems include:

• Mildew: a white powder on the leaf, caused by fungus.

• Leaf spot: dark spots caused by damp conditions.

• Aphids: small insects on young shoots.

• Slugs: especially on young plants.

Prevention is better than cure. Ensure sufficient air circulation, avoid wet leaves, and remove diseased parts immediately. In severe cases, you can use biological or chemical pesticides.

With these care tips, your hydrangea will stay healthy and blooming! The ideal plant for your garden or balcony. From watering to fertilizing, from cuttings to protection against diseases: give your hydrangeas what they need, and you will be rewarded with an abundance of flowers!