Yes, it will lead to increased flora.

> Increased temperatures can lengthen growing seasons, higher carbon dioxide concentrations can enhance plant growth, and in some areas rainfall and the availability of water resources can increase as a result of climate change.

See https://documents1.worldbank.org/curated/en/6766014682496426...

However, as that document goes into, the benefit from the extra flora won't be enough to offset the negative impacts of increased CO2.