June Plant of the Month | Hydrangea 'Rendez-vous' Series

The Hydrangea macrophylla 'Rendez-vous' series includes a number of outstanding varieties of Hydrangea macrophylla with showstopping big blooms in shades from white to pink, purple and blue throughout the summer. These hardy shrubs have been developed by leading hydrangea producers and are real statement plants for the garden. 

Position in a sunny spot or in dappled shade in your borders or in a container on the patio. 


Hydrangea 'Rendez-vous' Varieties

There are a number of varieties of Hydrangea macrophylla 'Rendez-vous.' These are a few of our favourites, available from Hillier Garden Centres.

Hydrangea macrophylla 'Cocktail' (Rendez-vous Series)

A hardy, deciduous shrub with ovate serrated edged dark green flushed reddish leaves. Produces white balls of flowers with pink fringed edges in summer with some flowers turning from white to yellow cream. Great for a mixed border or in a container.

Flowering Time: June to August

Sun requirements: Full sun to dappled shade

Soil: Any good, well-drained soil. Flower colours may be variable according to soil Ph

Hardiness: Hardy

Size: Grows to 1m height x 1m spread 


Hydrangea macrophylla 'Elegance' (Rendez-vous Series)

A hardy, deciduous shrub with ovate serrated edged pointed green leaves. Produces flat clusters of pure white lace cap flowers with fringed edges in summer on strong stems. Great for a mixed border or in a container.

Flowering Time: June to August

Sun requirements: Full sun to dappled shade

Soil: Any good, well-drained soil. Flower colours may be variable according to soil Ph

Hardiness: Hardy

Size: Grows to 1m height x 1m spread 


Hydrangea macrophylla 'Mademoiselle(Rendez-vous Series)

A hardy, deciduous shrub with ovate serrated edged pointed green leaves. Produces red-pink balls of flowers with fringed edges in summer on strong stems, the colour lasts better in light shade. Great for a mixed border or in a container.

Flowering Time: June to August

Sun requirements: Full sun to dappled shade

Soil: Any good, well-drained soil. Flower colours may be variable according to soil Ph

Hardiness: Hardy

Size: Grows to 1m height x 1m spread 


Hydrangea macrophylla 'Marina(Rendez-vous Series)

A hardy, bushy, deciduous shrub with broad mid-green leaves. In summer large, rounded clustered mopheads, of intense blue flowers appear, if on more acidic soil, or pink if in more alkaline soil. Great for a mixed border or in a container.

Flowering Time: June to August

Sun requirements: Full sun to dappled shade

Soil: Any good, well-drained soil. Flower colours may be variable according to soil Ph

Hardiness: Hardy

Size: Grows to 1m height x 1m spread 


Hydrangea 'Rendez-vous' Growing Guide

Planting

Plant in any good, well-drained soil. Be aware that the flower colour of many hydrangea cultivars (not including white varieties) is sensitive to the pH level of your soil. For blue hydrangeas to remain blue, for example, they need acidic soil with a pH below 5.5. Neutral to alkaline soils will tend to turn flowers pink or red.

If planting in a border, first add plenty of organic matter to enrich the soil. Dig a hole that is as deep as the rootball, and approximately two to three times as wide. Place the plant in the hole, fill with a soil / organic matter mixture and water thoroughly. 

If you are planting in a container, choose a pot that is at least 45 centimetres (18 inches) in diameter and use good quality potting compost with some organic matter mixed in. Water well.

Watering

Hydrangeas are very thirsty plants. Keep it especially well watered until it is established.

Pruning

Prune in late winter to early spring to remove the old flower heads. You can prune as far back as the first set of new buds. 

To give your hydrangea more protection from frost over winter, it is best to leave the flowerheads on during the winter. Many gardeners find the sight of the faded flower heads brings some extra interest to the winter garden!


Hydrangea 'Rendez-vous' Planting Ideas

These fabulous plants will make a statement as a single specimen plant in a large pot.

If planting in a border, you may choose to plant en masse and have a border bursting with showy blooms.

You may prefer to create a mixed border, surrounding your hydrangea with other summer-flowering plants to ensure a mass of colour throughout the season, such as dahlias, dianthus, roses and verbena. 

If you are willing to part with some of the flower heads, hydrangeas also make a beautiful cut flower.



Hydrangea 'Rendez-vous' Facts

  • Hydrangeas are ancient plants. Fossils have been discovered dating back to some 50 million years ago
  • They are native to southern and eastern Asia and the Americas