Rhododendron plant and care

Rhododendron as frühblühender Zierstrauch


The rhododendrons form a genus to which more than 1,000 rhododendron species count. For growing the hobby garden hybrids are particularly suitable which are derived from Asian and North American species.

Meanwhile, the rhododendron is one of the most popular ornamental shrubs. With its multitude of colorful flowers he is back in April for eye-catching and attracts the first insects to the garden.

However, the shrub also takes a creative function: Whether planted as a solitary plant, group or hedge, the rhododendrons are large and small gardens structure and after a few years stand to look natural protection.

Rhododendrons reward gardeners with low maintenance with a long flowering. Find out here what you should look for healthy plant growth.

planting of contents on Rhododendron and maintain

  • Varieties of rhododendrons
  • Claims and selective maintenance of the Rhododendron
  • So planting rhododendrons
  • From soil preparation to planting
  • Cutting measures on Rhododendron
  • Diseases and pests

Varieties of rhododendrons

Rhododendrons come in many sizes and flower colors that bloom species specifically from April to June. share botanist rhododendrons in seven groups, so the ideal ornamental shrub can be found for any location in the home garden.

The compact growing Yakushimanum hybrids are ideal for home gardens with their natural round shape. In the first few years, the state of ornamental shrubs carry numerous flowers and tolerated blazing sun without any problems.

Large-flowered hybrids need, to a height of up to four meters is adequate clearance in the flower bed, so as not inadvertently to shade smaller plants. Many birds build their nests then the nesting season in protective bushes.

Japanese azaleas among the evergreen rhododendrons and throw their leaves thus on until the following spring. With its intense flower colors they give large gardens contour. In contrast are the deciduous azaleas with its scented flowers. These azaleas develop an appealing colorful autumn leaves.

Claims and selective maintenance of the Rhododendron

rhododendronThe rhododendrons bloom in a variety of colors from white to purple.

Most rhododendrons thrive ideal in bright penumbra, however, some species prefer sunny places. Inform therefore before buying by corresponding benefits to find the right plant for the selected location.

In addition, many Rhododendron species over the years are expansive and high. If the space is rather limited fails in your garden, you should opt for kleinwüchsigere varieties such as Repens hybrids. They impress with bright red flowers and a compact habit.

Rhododendron set high demands on soil texture: The substrate should be humic and have a pH value between 4.5 and 5.5. An acidic soil, thus ensuring an ideal plant growth.

rhododendronRhododendrons produce numerous flowers under optimum conditions.

If the pH value of the soil above these values, experts recommend planting new varieties of INKARHO-rhododendron. After a finishing on lime-tolerant application, we Ziersträuche tolerated little acidic soil well.

tip: Plant rhododendrons not in the immediate vicinity tree, here the root pressure is too great.

Rhododendron freeze extremely rare in winter, because many species are hardy. If the shrubs have suffered over the winter but it was too dry for them to proceed. Many rhododendrons are evergreen, so evaporate even in winter. Lack to the water, they dry up. Pour therefore regularly rhododendrons in persistent dry periods in the winter.

tipIn summer only the earth is watered regularly under the bush to avoid burning the flowers.

So planting rhododendrons

rhododendronRhododendrons are an asset to any garden and attract bees and many other insects.

Rhododendrons require humus soils as they can be found in the Oldenburg region. There they are often grown on pure peat bogs.

Nevertheless, the gardeners can plant them in other regions of Germany beautiful ornamental shrubs in his garden when he noticed certain basic rules when planting. The decisive factors are the right location and optimal soil conditions, the targeted soil preparation plays an important role for healthy plant growth.

A skilled artisan can determine the pH value of the soil. If necessary, help a special rhododendron fertilizer for soil preparation.

From soil preparation to planting

rhododendronThe closed bud already promises numerous flowers.rhododendronThe bud opens and displays their color-splendid petals.

Most rhododendrons are delivered as container goods in disposable pot. These shrubs can be gepfanzt over into the open all year, but a spring planting has been proven in the shallow-rooted rhododendrons.

Lift the plant from the container and verify that the root ball is moist. This is not the case, the root ball is thoroughly watered. This purpose, set the plant so long in a container with water until the root ball to rise no more bubbles. If the bale is not as strong compacted, it can also be put into the water easily, together with containers.

After the ideal location is determined, a planting hole is dug, having twice the width and depth of the root bale. Then fill the planting hole to a third with damp peat and organic rhododendron fertilizer for optimum growth.

Now run a targeted deep loosening by: Dig around the planting hole, so that peat and fertilizer mix well with the subfloor. thrive in the loose soil and then grow the fine roots very well.

In a next step, provide further peat to the walls of the planting hole, so that the root ball of the Rhododendron is completely surrounded by the onset of peat. It is important that the peat is well moistened.

Fill remaining gaps with the excavation or special rhododendron earth and water vigorously, so plant and earth bond well.

Cutting measures on Rhododendron

rhododendronRhododendrons form immediately after flowering new buds and should not be cut.

The Ziersträuche can be expansive and confusing size with the years. Inexperienced gardeners quickly access to garden shears and cut the shoots. Such measures, however, the average Rhododendron withstand extremely poor because of the ornamental shrub immediately after flowering already forming new buds for the following year.

Cutting measures at the Rhododendron are therefore not recommended as a rule.

Refined varieties have been disadvantaged by cutting actions, cuttling propagated varieties are much more tolerant. Should nevertheless a topiary be performed, select early spring, when it no longer leads to severe frosts at night. The flower buds are but then cut off and there is the possibility that your ornamental shrub another two years will bear no flowers.

tip: After flowering wilted flowers are cut off. Be careful not to damage new buds.

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Diseases and pests

pestThe graphocephala fennahi infects the ornamental shrub with a fungus.

The graphocephala fennahi is a feared pest on ornamental shrub. The flying insects are up to 1 cm in size and are conspicuously colored green-red.

In late summer, the females lay their eggs under the bud scales of flower buds, so they cause small cuts on the plant. These form a portal of entry for the fungus "Pycnostysanus azaleae"Which leads to a Knospenabsterben and damages the Bush term.

Determine brown discolored buds, you should abknispen these and dispose of household garbage, because on the compost, the fungal pathogens could spread. Acute cicada infestation They fight with yellow panels remain where hang the insect and die. Usually a trap per Rhododendron plant is sufficient.

tip: Will the end of August fought the cicadas again, the risk of a subsequent episode of infection can be reduced.

Also the weevil especially like attacks rhododendrons. How to identify an infestation and distribute the beetle environmentally friendly, learn fight in our article on the subject of weevil.

Rhododendron Welke - dieback in Rhodondendron

Harming the Rhododendron WelkeRhododendron Welke shown by brown, curled leaves.

a dieback can occasionally be observed on rhododendrons. This is due to an infestation with Phytophthora wilt (Phytophthora spp.). First, individual shoots wither, and later the whole plant may die.

The fungus infection can occur in two ways: on the shoot tips or roots. If the soil is tightly compacted and there is lasting moisture, the roots are weakened and are an ideal target for the fungal spores.

The dieback may not be fought directly. If the infection on the shoot tips and not via the roots is affected plant parts are cut back into the healthy range. The mushrooms should already spread more in the soil and the roots have infested the plant will die most likely. Here it is advisable to remove the plant completely and disposed of with household waste, as the fungi could survive in the compost using their spores even long. The ground at the site should be replaced before a new planting and prepared with compost.

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