# Invasive species threats in the Czech Republic

> Live situation record from CLSTR: https://clstr.news/situations/invasive-species-threats-in-the-czech-republic
> Updated: 2026-09-17T19:15:19.000Z. Sources: 4. Developments: 2.

Botanists in the Czech Republic are engaged in a long-term project to document the nation’s flora through a photographic atlas, aiming to catalog approximately 10,000 images of native and introduced species by 2028.

Parallel to these documentation efforts, experts have raised alarms regarding the threat invasive species pose to local biodiversity. Specific concerns include the giant hogweed, which can cause burns, and the Himalayan balsam, which forms dense thickets that outcompete native vegetation. 

Recent assessments suggest that climate change, marked by warmer summers and earlier springs, is accelerating the spread of non-native plants, insects, and animals. Human activity is also cited as a factor in the introduction of invasive species, such as the red crayfish, which threatens native populations.

## Timeline

### 2026-09-17: Invasive species threaten Czech biodiversity amid climate change

Invasive species like the Himalayan balsam are threatening Czech biodiversity, a process accelerated by climate change and shifting seasonal patterns.

2 sources. https://clstr.news/cluster/invasive-species-threaten-czech-biodiversity-amid-climate-change

### 2026-09-01: Czech botanists document national flora and warn of invasive species

Czech botanists are developing a massive photographic atlas of 3,300 plant species for a 2028 release, while experts warn of the dangers posed by invasive species like giant hogweed.

2 sources. https://clstr.news/cluster/czech-botanists-document-national-flora-and-warn-of-invasive-species

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Cite as: Invasive species threats in the Czech Republic. CLSTR, https://clstr.news/situations/invasive-species-threats-in-the-czech-republic