Recognize Ambrosia Plant And Fight - Tips Against Allergy Weed

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Hardly any other plant is as aggressive as the ambrosia plant. Only a few pollen can make a healthy person allergic. There is only one way to protect yourself from it. The allergy monster must go.

Recognize and combat the plant - so you can get rid of the allergy weed again

The ambrosia plant, also known as "ragweed", was mainly found in America until a few years ago. Through global trade in commodities and progressive climate change, the plant managed to expand in Europe. Especially affected are Hungary, France and Italy, but even in Germany one is no longer immune from the treacherous plant. With devastating consequences.

The pollen of the ambrosia plant is now one of the most common allergens in hay fever patients (Source: With hardly any other plant the allergischen reactions can be as strong as with her. A single plant can emit up to a billion pollen and these are then even germinable for several decades. The pollen is so small that it can easily penetrate deep into the bronchial tubes so that, in the worst case, even asthma can occur.
"By the way: People who have never had allergies can be allergic to the Ambrosia plant. So no one is immune to it and therefore only one option remains. Away with the weeds.

Birdseed contaminated with ragweed seeds

Climate change and global trade are not the only reasons for the growth of the horrendous plant. The seeds are also in the birdseed that we offer our domestic birds for feeding in winter.

This is because sunflower seeds and the weed fructose ripen and harvest together. In recent years, the bird food has indeed been "cleaner", but not one hundred percent. Even seed packets labeled "Ambrosia Seed Free" are not always guaranteed to have no seeds.

In order to protect your own garden and to reduce the general propagation, it is therefore advisable to make the bird food for the winter best yourself.

Ambrosia plant recognize: 6 important features

Recognizing an ambrosia plant is not exactly easy. It is very similar to other plants in our environment. So it is especially considered a double of the common mugwort. But also the wild carrot and wormwood are similar to it confused.

To avoid confusion, here are some special features of the Ambrosia plant. In addition, the Bavarian State Research Center for Agriculture has published a table showing the main distinguishing features between common mugwort and ambrosia. Of course, I do not want to withhold these too.

➜ Ambrosia recognition features

  • Stem: The hairy stalk is first green and then turns reddish to purple over time. He is very robust and has strong branches.
  • Leaves: The leaves of the Ambrosia plant are green on both sides.
  • Blossoms: The flowers are in different places. The female flowers are directly in the leaf axils, while the male protrude as grapes and spray their yellow pollen during flowering in July.
  • Location: The Ambrisoa plant can be found not only in gardens, but also on roadsides, along railway tracks and green areas. A very popular place are also vacant lots.
  • Growth: If the location is very dry, the mugwort-like plant grows only about 10 to 15 cm high. However, if the soil is rich in nutrients, the plant can even reach a considerable size of 2 meters in case of heavy rainfall.
  • Growth / flowering: In contrast to wormwood, the ambrosia plant grows slowly in the first few months. The plant starts to grow rapidly between the middle and the end of June, when the first flowers are formed at the end of July or beginning of August.

Comparison Ambrosia / Common Mugwort

characteristicCommon mugwortambrosia
leavesUnderside brighter, silvery-white coloredGreen on both sides
stalkGlabrousHairy, green, reddish in autumn
developmentFaster (end of May approx. 25 - 50 cm)Slow (end of May approx. 10 - 20 cm)
floweringFrom the end of JuneFrom mid / end of July
inflorescencePyramidal inflorescenceLongish male flowers grape-like at the end of the shoot, yellowish when pollen formation


Fight Ambrosia Plant - 4 Tips

Report ambrosia plant
Under you will find a central registration office for Ambrosia plants. The website is maintained by the Julius Kühn Institute and collects all the find data on a map.

Tear plants together with the root and then dispose of them with household waste.Do not throw the plant into the organic waste or compost, as the plant may continue to spread unhindered here.

If the plant has already formed flowers, you should first cut off the flower stem and then pull the plant out with root, otherwise the plant would regenerate rather quickly. For safety, wear a dust mask to protect yourself from pollens.

As the seeds are germinable for many decades, as mentioned above, you should inspect the affected areas annually for re-emergence.

Examine also especially your bird food places on Ambrosia plants. It is always best if the plant does not even flower. This reduces the risk that the pollen will fly through the air, giving the plant a new place to spread.

Video Board: Virtual Pollen Guide: Weeds That Cause Allergies.

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