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The best time to plant flowering shrubs is autumn. Although today almost all plants are offered as containerized container products that can be planted all year round, the autumn months are also the ideal planting season for these pot-grown shrubs. Because of the lower temperatures, the flowering shrubs use less water and need to be less frequently poured, on the other hand, they can start immediately next spring. If the soil is still warm enough, your new additions will be rooted up to the beginning of the winter.
Dig out hole and loosen earth
First, lift a generous planting hole with the spade (left). With compacted soils loosen the sole with a spade or a digger fork and fill in a layer of gravel or building sand as drainage (right)
Choose a location in the garden that will meet the needs of the shrub - for example, full sun for summer lilac, light shade for rhododendron. When choosing a place, pay particular attention to the size of the shrub later on. Then lift a hole at least twice the size of the root ball. Then the roots can spread well. Before you use the shrub, you should loosen the sole of the planting hole well, for example with a spade or a digger fork. This makes it easier for the roots to penetrate into deeper soil layers. In compact, impermeable soils, loosening is particularly important, as otherwise it threatens waterlogging when it rains. A tip for gardens with heavy loamy or compacted soils: A layer of gravel on the bottom of the planting hole improves water permeability.
Populate the shrub and straighten it
Throw the shrub (left) and place it straight into the planting hole (right). Make sure you pay attention to the correct planting depth
Next, the pot is removed from the root ball. Slightly loosen the edge of the root ball with your hand. Longer strong roots can be cut with scissors. Especially in older and valuable plants such as the magnolia, it is important to preserve as much as possible of the fine root network, the so-called hair roots. The flowering shrub absorbs water and nutrients through the hair roots. At the root ball you recognize the quality of the plants: With good quality the bale remains almost completely after the tamping, with bad it falls apart easily. Now you can put the flowering shrub carefully in the planting hole and align - preferably with the "chocolate side" forward, so in the direction of a garden visitor. The pot or soil bale may only be so deep in the planting hole that the surface is at the level of the surrounding earth level. For larger shrubs or trees, you should additionally hammer in a pile for stabilization in the ground. It prevents the shrub from moving too violently in strong winds, tearing off the fine hair roots.
Fill hole with soil and sprue
Gently cradle the soil (left) and thoroughly water the shrub (right)
Now the planting hole is filled up with soil again. Take the soil that you previously dug up and mix it about halfway with mature compost or potting soil. A handful of organic fertilizers, such as horn shavings, provide the plants with nutrients slowly and continuously. When planting in the fall, do not give the shrubs a lot of nitrogenous fertilizer, such as blue-grain. He would stimulate the plants once more to growth and thus reduce the winter hardiness. After filling, the upper edge of the pot bale should be flush with the surrounding garden floor. Now step on the earth gently around the shrub. This ensures that the roots have direct earth contact and can begin immediately with the absorption of water and nutrients.
Draw around the shrub a small mound, the so-called pouring rim. Thus, the irrigation water, which does not seep directly, at the desired place and can slowly penetrate into the ground. Finally, water the shrub well. This not only ensures the water supply to the shrubs, but also closes any remaining gaps between the root ball and the soil. Continue to water the shrub in the fall or next spring, when longer periods of drought occur. Once the shrub has grown properly and has formed a far-reaching root system, it usually comes out without additional watering. In cut-friendly shrubs such as Siberian dogwood and forsythia, a plant cut stimulates the shrub to more dense growth. Cut the branches by about one third.
A tip to the end: Flowering shrubs that grow in the undergrowth of forests, such as most rhododendrons and witch hazel, should mulch after planting with a layer of bark humus. It simulates the foliage layer at the natural site.