Ziergarten: The best gardening tips in September

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As the summer slowly comes to an end, it's time again to get the garden ready for golden autumn. From lawn care to hedgehog quarters - we have summarized the most important gardening tips for the ornamental garden in September.

Cut back cockade flower and Co. in early autumn

Some perennials were so blooming that their visit to the garden was short-lived. This includes, for example, the cockade flower (Gaillardia). In her a strong pruning in early autumn has proven to be a life-saving measure. The same applies to small and large-flowered girl's eye (Coreopsis lanceolata or grandiflora), which in contrast to the needle-leafed species (C. verticillata) are naturally short-lived. Admittedly, it is difficult to shorten the mentioned candidates at the end of September near the ground, because then they are still partially blooming. But so the plants are encouraged to put all their strength in the wintering organs rather than in the flowers, and come through the cold season better.

Lawn care in autumn

With falling temperatures, the lawn should be mown to a height of five centimeters: If the grass is longer, it can rot, it is too short, the roots lack a cold protection. Already fallen foliage can conveniently be mowed with. Finally, if it stays too long, it also promotes rot. This weakens the lawn and it becomes more susceptible to further fungal diseases. Airing small, hazy areas with a grave fork, then the roots get back what they need: oxygen, water and nutrients.

Ornamental apples are edible!

Purely visually, ornamental apples differ significantly from conventional apples. But they are not toxic, as is often erroneously claimed. On the contrary: ornamental apples contain a lot of fruit acid and therefore taste harsh when eaten fresh from the tree. However, must or jelly from ornamental apples is a highly aromatic culinary delight. There is nothing wrong with extending the apple harvest to the little relatives in the ornamental garden.

Crab apples

The fruits of the ornamental apple are much smaller than the garden apple

Garden tip: fertilize roses with potassium

It is best to fertilize your roses again in the beginning to the middle of September with a low-chloride potassium fertilizer such as Patentkali. The potassium promotes the lignification of the shoots and is stored in the cell sap of the plant cells. There it sets down the freezing point much like a deicing salt and makes the rose shoots more frost-resistant.

Plant flower bulbs

If you have ordered new flower bulbs on time, the delivery often arrives in mid-September. It is best to put the fresh onions right in the ground - they should be planted about twice as deep as they are tall. A special garden tip: For tulips, lilies and other wet-sensitive species, you should sprinkle some coarse building sand into the planting hole before setting the onion.

Spring bulbs

Onions and tubers of spring flowering plants such as tulip, narcissus and crocus must be planted in September

Sow two-year-old

Biennial flowers such as the Digitalis purpurea or Meconopsis cambrica (Seedling poppy) spontaneously sow in the garden at favorable locations, appearing elsewhere in the bed each year. If you are not satisfied with the growth rate of your two-year-old, you can help out now: Collect the seeds in early September and sow them again in different beds. Beforehand you should roughen the soil with a rake and push the seeds slightly into the soil after sowing with your foot. When dry, it is best to pour gently.

House cleaning in the nesting box

In September, the last breeding of tits, sparrows, nuthatch and wrens flew out. But in the nesting box there is often wild activity, as bird fleas, mites and ticks have also made themselves comfortable here. But that's not the only reason why you should clean the boxes right away. The Naturschutzbund Deutschland (NABU) points out that cleaning later in the fall could harm winter-friendly winter guests such as bumblebees or bats. Tip: Before you go with gloves and brooms to action, please knock. Sometimes there are "intermediate tenants" like forest or dormouse.

Check nesting box

Before cleaning, carefully check whether the nesting box is really uninhabited

Dahlias: Cut off blooms

Cut the withered flowers of your dahlias continuously over the first or second leaf below the inflorescence, because then the stems bring forth new buds until the first night frost brings an end to the flowering spectacle.For the vase, you should cut only fully flowering flower stems - preferably early in the morning. Leave as many leaves on the stems as is absolutely necessary for aesthetic reasons, as too many leaves reduce the shelf life in the vase.

Cover the pond

Depending on the weather, the first deciduous trees will lose their leaves as early as the end of September. Our garden tip: Cover your garden pond early with a foliage protection net, so that the leaves do not fall into the pond and enrich it with digested sludge.

Create a new lawn

In early September is the ideal time to sow out new lawn. The summer dryness is usually over and the soil is still warm enough for the grass seeds to germinate quickly.

Grass seeds

High-quality seed mixtures grow dense rather than fast. They are more expensive than for example the mixture "Berliner Tiergarten", but worth their money

Plant winterlings

The about pea-sized, knobbly tubers of winterlings (Eranthis) do not suggest that they are pretty spring bloomers. In fact, they need pH-neutral or calcareous garden soil and a sunny to partially shaded spot. Here the tubers come five centimeters deep into the ground. Tip: To make sure that winterlings root themselves in a slightly dry soil, put the tubers in water before planting overnight.

yellow winterlings

From the shapeless brown tubers emerge in February small spring bloomers with yolk-yellow flowers

Sharing lady's mantle

Cut off the ground with a spade around the lady's mantle. Then prick deep under the shrubs, lift them out together with a generous root ball, lay them down on a piece of open bed nearby and divide first into two halves. Then separate with the spade, a knife or with your hands more cuts. Attention: These should be at least fist-sized. The "young plants" can immediately get a place in the bed again. It is important that the perennials are well pressed and thoroughly watered. The planting distance should be 30 to 40 centimeters.

Cutting blue rain

In order to maintain the lush flowering flora of the wisteria, without the gigantic planting up to eight meters high, a rigorous cut of the flower-bearing short shoots is required. About two months after flowering, cut all side shoots back to 30 to 50 centimeters. If new shoots emerge, break them before they lignify. This slows growth and stimulates the formation of flower buds.


Wisteria tends to proliferate if not cut regularly

Transplant evergreen trees

Evergreen coniferous and deciduous trees should be transplanted by September at the latest. They hardly evaporate water and form new roots in the still warm soil until winter. Keep in mind, however, that the plants are more prone to frost damage in the first winter and therefore better shift the transplantation of sensitive species such as camellias to spring.

Set up hedgehog quarters

Hedgehogs start their search for suitable winter quarters starting in September. If you want to house the useful animals in your garden, you should build suitable shelters by September at the latest. Place dry leaves or straw in a sheltered spot under shrubs and place an upside down fruit box on it after removing one of the two narrow side walls. In front of this opening, insert a few curved willow branches into the ground so that there is access to a 30-centimeter-long pergola. Finally, you overcrow the entire structure with dry branches and foliage - and finished the hedgehog quarter.

Igel Quarter

Hedgehogs look forward in the fall over thrown up rice piles, crates or cottages. Do not forget the cat safety!

Chrysanthemums: thinning flower buds

So that your chrysanthemums bloom particularly lush in autumn, our garden tip is: too dense buds need to be thinned out. Just pinch some buds with your fingers. Leaving only one bud at the end of each shoot will make the flowers especially large and luxuriant.

Video Board: Garten pflegeleicht gestalten.

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