Gardening

Hydrangea: all growing tips


Hydrangea, popularly known as hydrangea, is a beautiful flowering shrub.

In summary, what you need to know:

Last name: Hydrangea
Family: Hydrangeaceae
Height: 1 to 2 m

Exposure
: Partial shade and shade
Ground :Rather acidic, heather earth

Feuillage: Expired -Flowering: June to October

  • Find our articles devoted to hydrangeas

Here are all our advice on cultivation, size and maintenance for a beautiful growth and flowering of hydrangeas throughout the seasons.

Exhibition for a hydrangea

It is important to give your hydrangea every chance to develop well.

  • Hydrangea appreciates the sun as long as it is not scorching, especially in summer.
  • Sun in the morning or evening is the best exposure for a hydrangea.

Hydrangea starts growing quite early in the season, usually in early spring.

  • To avoid late frosts, favor a planting along a house wall or under a tree to protect it from the last frosts of the year.

It should also be noted that Hydrangea paniculata withstand the cold better than the best known hydrangea, hydrangea macrophyla.

How to plant a hydrangea

Like most shrubs, hydrangea is best plantedin autumn.

Purchased in a pot or container, you can plant the plant up toin springand evenin summerby avoiding periods of frost and high temperatures.

  • It needs heather earth for its acidity and compost or jaridin earth to develop well.
  • A mixture of 50% heather soil and 50% potting soil and garden soil is ideal.
  • If your soil is limestone, avoid hydrangea or add sand to lighten the soil

Respect adistance from 80 cm to 1 mbetween each foot if you want your hydrangeas to have room to develop.

  • Make sure the collar (part between the stem and the roots) is level with the ground.
  • Firmly pack the soil when planting.
  • Water regularly, especially the first year after planting hydrangea.
  • Check out our tips forproperly plant heather earth plants.

Size and maintenance of hydrangeas

If the interview is reallyvery easyand hardly requires any care, aannual sizewill allow you to significantly improve flowering.

  • After flowering, remove faded flowers as you go
  • Preferably prune hydrangeasafter the frosts, atMarch.
  • Find our video tutorial fortrim your hydrangeas well

How to keep your blue hydrangeas:

Most of the people who see their hydrangea turning pink after planting are always because of the acidity of the soil.

The more calcareous the soil, the more difficult it is to keep a blue hydrangea.

The solution ?To keep a blue hydrangea, you need to acidify the soil.

  • Heather soil when planting is a great solution to keep them blue
  • There is also alum, it is an aluminum sulphate powder which helps to restore blue to hydrangeas. Also in liquid form, it is sold in garden centers.
  • A slate mulch or frommaritime pine bark also helps restore acidity to the soil.

To know about hydrangea

If l‘Hydrangea macrophyla, known as hydrangea is the best known, there are many species of the genus Hydrangea.

Shrub with flowers of variable size and sometimes even climbing the hydrangea is the delight of our gardens. They are found in most gardens and almost everywhere in the world.

Rather hardy, hydrangeas all withstand temperatures of at least -15 °, some even down to -30 °.

In this photo we can admire the superb hydrangea paniculata.

If you have anorth facing wall, climb aclimbing hydrangea.

Diseases of hydrangeas

Hydrangea is quite resistant but still has some weaknesses causing disease.

If white balls appear on the stems, it is undoubtedly mealybugs.

  • Cochineals: organic control and treatment

If a white felting appears on the underside of the leaves, it is probably the fruit of the oidium.

  • Powdery mildew: organic control and treatment

If your soil is too chalky, your hydrangea may turn yellow and show signs of fatigue.

  • It is then necessary to enrich the soil with a hydrangea fertilizer and add the maximum amount of heather soil on the surface.

Smart tip

By varying the varieties of hydrangeas, you give so much shape and color to your garden to the delight of the eyes.


  • Find our articles devoted to hydrangeas

Photos: © Imag'In and © Pixaterra

Video: Propagating Hydrangea Cuttings the Easy Way (October 2020).