If there is more CO2 in the air than in the past, are plants growing better than ever before?
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IT is not uncommon to CO2 enrich greenhouses to increase plant growth it is done for a reason.
Increased CO2 levels have an effect on wild plants too. The planet is green is hase been in the recent path that CO2 levels and increase the temperature in the northern have resulted in a longer growing season.
[https://climate.nasa.gov/news/2436/co2-is-making-earth-greenerfor-now/](https://climate.nasa.gov/news/2436/co2-is-making-earth-greenerfor-now/)
For many wild plants, it is not CO2 that is the limiting factor but it is often Nitrogen or another element the plant need. To that add the obvious limitation in many places water. So what the result of CO2 is for a plant in a greenhouse where everything else is provided too is not the same as for a plant in the wild where other things are most of the time the limiting factor
It is not the case that higher and higher-level results in higher growth rates, that is experiments that show that plans have optimal CO2 levels and what it depends on the pant.
[https://bmcplantbiol.biomedcentral.com/articles/10.1186/s12870-018-1243-3](https://bmcplantbiol.biomedcentral.com/articles/10.1186/s12870-018-1243-3)
But you have to remember CO2 changes are not something that occurs and nothing else changes, the temperature increase, and the weater pattern changes. So for plants in some locations, the result will be that it will be too warm and dry and the result is less growth than today. So increasing CO2 levels can have a short time planetary increase in plant growth the long-term effect can be less plant growth.
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