Hydrangea 'Madame Émile Mouillère' white hydrangea
Hydrangea 'Madame Émile Mouillère' white hydrangea
Credit: Said Jimenez
Hydrangea late blooming pink 'Madame Émile Mouillère''
Hydrangea late blooming pink 'Madame Émile Mouillère''
Hydrangea 'Madame Émile Mouillère' late-blooming pink
Hydrangea 'Madame Émile Mouillère' late-blooming pink

Hydrangea macrophylla 'Madame Émile Mouillère', a white hydrangea

In 1909, Émile Mouillère, a horticulturist in Vendôme, created this variety of hydrangea with white flowers speckled with pink from hydrangea macrophylla (Hydrangea macrophylla). Since then, Hydrangea 'Madame Émile Mouillère' has become a classic in gardens the world over.

How to recognize Hydrangea macrophylla 'Madame Émile Mouillère'?

Hydrangea 'Madame Émile Mouillère' is almost two meters high and has a spread of 1.5 meters. It's a shrub with a dense, bushy, rounded habit.

A gray, sometimes ochre bark covers the woody, branched stem.

In Latin, macrophyllasignifies large leaves. And hydrangea 'Madame Émile Mouillère' lives up to its name! The most imposing limbs are over 20 centimetres long. Oval and deciduous, they are a medium green in contrast to the color of the flowers.

In theory, Hydrangea 'Madame Émile Mouilllère' flowers in summer. In mild climates, however, it blooms from spring to autumn. The white flowers are grouped in round clusters. As with other hydrangeas, the inflorescence is made up of fertile and sterile florets. Fertile florets are located in the center of the plant and are almost invisible. But the sterile florets are immediately obvious! Their four white petals turn pink or pale green as the flowering season draws to a close.

We don't know how sympathetic Madame Émile Mouillère was, but her botanical version is poisonous. Like other hydrangeas, this variety causes digestive, neurological and cardiac problems if ingested. Keep your pets away from the plant! And remember to wear gloves when pruning and repotting. Its sap can cause skin irritation in sensitive individuals.

Our maintenance tips

The color of your Hydrangea 'Madame Émile Mouillère' depends largely on the pH of your soil. In acid soil, flowers are blue. In alkaline soil, flowers are pink or white.

WateringWatering

Madame Émile Mouillère' Hydrangeas can withstand neither drought nor excess water.

Before watering, check the condition of the potting soil. The surface must be at least one centimeter dry.

RepottingRepotting

Obtain a perforated pot twice the size of the root ball. Fill it with a mixture of equal parts heather and garden soil.

Plant your Hydrangea 'Madame Émile Mouillère' in the center. Add potting soil, but do not fill the pot completely. Stop a few centimetres from the edge to form a watering basin. Press down and water generously.

Flowers are heavy and can bend branches. You can stake them to take the strain off the plant and keep it upright.

FertilizationFertilization

You can stimulate the growth of your plant during its growth phase, in spring and summer, with fertilizer.
Fertilize with a fertilizer for acid-loving plants. You can choose a hydrangea or bougainvillea fertilizer, for example.

PrunePrune

Madame Émile Mouillère' Hydrangeas bloom on the previous year's wood. You mustn't prune too much, otherwise your plant won't flower.

Remove wilted flowers. Also remove frozen or broken branches.

Prune branches one to two centimetres above the last buds. Use a clean, sharp instrument to promote healing.

If your Hydrangea 'Madame Émile Mouillère' is old, cut back a few old branches by half to encourage new growth. But don't do it to all the branches! You won't have any flowers for a year!

PlantationPlantation

Once the last spring frosts have passed, you can plant.
Plant your Hydrangea 'Madame Émile Mouillère' in semi-shade, along a wall or under a tree to protect it from direct sun, frost and wind.

Soak the rootball of your Hydrangea 'Madame Émile Mouillère', still in its container. Preferably use rainwater. Tap water is often too hard.

Meanwhile, dig a hole 1.5 times deeper than the root ball and three times as big. Place a little compost at the bottom.

Plant your Hydrangea macrophylla 'Madame Émile Mouillère'. The collar should reach ground level. Fill the hole with a mixture of heather soil (50%) and garden soil (50%).

Mulch the soilwith organic matter such as dead leaves or pine bark. Water copiously to encourage rooting.

You can also stake the flowers if their weight causes the stems to bend.

CuttingCutting

Select a branch that has not yet flowered and whose tip is still flexible.

Take a section about ten centimetres long. Cut with clean, sharp pruning shears below a node.

Dress your cutting. Remove the leaves on the lower half of the shoot. You can reduce the size of the others by half.
Fill a pierced pot with a mixture of universal potting soil(1/3), sand(1/3) and heather (1/3). You can also use potting soil for seedlings and cuttings mixed with perlite. Form a pre-hole and plant your cutting in the center. Pack lightly.

Cutting is done in a smothered fashion. Place your Hydrangea 'Madame Émile Mouillère' in a mini greenhouse or translucent crate. You can also cover it with a transparent plastic bag.

Your cutting needs humidity to develop. Fog the leaves and potting soil whenthey are dry, to maintain a high level of humidity. But beware of rot! You need to aerate for a few minutes every day to avoid rot.

Diseases / Threats

Information

Family Hydrangeaceae - Hydrangeaceae
Type Hydrangea - Hydrangea
Species Large-leaf hydrangea - Hydrangea macrophylla
Lifecycle Perennial
Foliage Deciduous
Exposure
Substrats
Planting methods
Open ground
In pots
In tubs
Categories
Tags
Beginner
Flowery
Rustic
Toxic
Origin
Southeast Asia
Hardiness (USDA) 7a
Leaf color
Flower color

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