Ambrosia: how to get rid of a dangerous guest in gardens


Ambrosia, from the Latin Ambrósia, is an annual or perennial plant from the Asteraceae family. The plant is included in the list of quarantine herbs, limited in Russia. It is relatively common in the middle zone, grows abundantly in the chernozem zone.

Botanical Description

The description of this plant may vary slightly depending on the species. The harmful plant has a light or dark green aboveground part. The height of the grass can vary from 20 cm to 2 m. The root system of the rod type penetrates deep into the soil by 3-4 m.

This fairly common plant is propagated by seeds. Adult ragweed is able to form about forty thousand seeds with a high percentage of germination, which complicates the weed control. The period of mass shoots falls on the period from May to June, and flowers that do not differ in attractiveness are formed in the last decade of July. Flowering continues until significant autumn cooling.

Main varieties

In the genus Astro, to which ragweed belongs, about fifty species are included. Most of them are widespread in North America, but in recent years many varieties have been introduced into other countries. Some species are found in large quantities in Ukraine and in the southern regions of our country. On the territory of Russia, four types of malicious quarantine weeds are most common, clogging the crops of almost any crop.

View nameLatin nameCharacteristic and DescriptionBloom
Leaf AmbrosiaAmbrosia artemisiifolia L.The upper part of the leaves is green and almost bare, and a grayish-green short pubescence is present below. The height of the branching aerial part can be 20-200 cmFlowering from July to October. Baskets are unisexual, small, multi-flowered, collected in general, male and female racemose inflorescences. The receptacle has bracts
Ambrosia is tripartiteAmbrosia trifida L.1-3 m high, with a straight, furrowed, branched and coarse-rough stem with opposite and petiolate leaves, monoecious plantMen's baskets of a multifloral type, small, women's baskets of a single-flowering type, larger, located in the leaf sinuses or at the base of male inflorescences
Holosome ragweedAmbrosia psilostachya DC.The plant is bluish-green in color, due to the presence of dense pubescence. The stem is straight and furrowed, branched. Plant height within 50-150 cmFlowers in baskets, gathered in loose brushes, men's baskets of multi-flowering type, small, women's baskets of single-flowering type
Ambrosia vulgarisAmbrosia elatiorIn appearance and shape of the leaves resembles common wormwood with short-leaved or sessile, almost whole leavesInflorescences are represented by baskets with unisex stamen flowers, collected in complex, spike-type inflorescences

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Plant damage

Ambrosia is found in settlements, often grows in wastelands and fields, can appear near trees and in roadside forest belts, as well as along roads.

Ambrosia: harm to humans

This is an annual weed grass, the natural distribution of which is North America. In recent years, Ambrosia elatior and other varieties are found almost everywhere in our country, causing significant damage not only to crops, but also to human health:

  • An allergic reaction to pollen has become common in children and adults. Among its most frequent manifestations is the development of allergic conjunctivitis and rhinitis, as well as symptoms of bronchial asthma, urticaria, or Quincke's edema. Biologically active substances of ragweed have a negative effect on human tissues and organs.

  • Ambrosia, mowed and dried with herbs, when used as livestock feed gives a very harsh and unpleasant odor to milk.
  • Quarantine weed is able to pump water out of the ground many times more active than corn and sunflower, so crops grown in close proximity to Ambrosia dry out almost instantly.

Thus, the harmfulness of ragweed in areas of mass distribution of weed is expressed in lower crop yields, hindering the process of harvesting and clogging of plantings, as well as deteriorating people's health.

It should be noted that ragweed and tripartite ragweed are typical annuals, this somewhat simplifies the control of weeds, but Ambrosia holomechatelnaya is a perennial species, and the destruction of this weed will take longer.

Destruction methods

Fighting Ambrosia is quite difficult, and getting rid of it in a short time will not work. Weed control includes both agricultural practices and the use of strong and most effective chemicals:

  • it is necessary to correctly alternate crops in crop rotation;
  • It is important to carry out high-quality tillage on the site;
  • it is required to carry out proper care of crops and to deplete stocks of weed seeds in the soil;
  • in areas with a high level of clogging with ragweed, a technique such as the creation of a steam field is used, which reduces the clogging indicators by two-thirds;
  • a good result is the permanent cultivation of winter crops for three years, followed by semi-steam soil cultivation;
  • a small amount of weed vegetation in a personal or garden plot can be destroyed by repeated mowing of annual ragweed up to the stage of flowering and seed formation on the plant;

One of the most effective ways to kill Ambrosia is to use the latest generation of herbicides:

  • tillage before sowing or spraying of crops at the phase of mass seedlings with a solution of the drug "Viaduct";
  • tillage with embedment with the Pivot, Tapir or Tactic petition preparations;
  • allowed the use of pesticides from the group of glyphosates, which include preparations "Caliber", "Roundup", "Glysol", "Prima", "Glyphos", "Tornado" and "Clinics";
  • it is very important to carry out separate collection and storage of the crop obtained from areas where there is a strong clogging of Ambrosia of any kind.




Ambrosia Control Methods

Also, if necessary, Ambrosia should be removed from uncultivated plots, exclusion zones and vacant lots adjacent to household plots or garden plots. With a timely and competent weed control, there is a chance that it will not damage your crops.



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