Geraniums can tolerate temperatures as low as 45 degrees Fahrenheit and still thrive.
Broccoli plants can tolerate temperatures as low as 28F (-2C) and still thrive.
Mint plants can tolerate temperatures as low as 32F (0C) and still thrive.
Olive trees can tolerate temperatures as low as 15F (-9C) and still thrive.
Bell pepper plants can tolerate temperatures as low as 50 degrees Fahrenheit and still thrive.
Avocado trees can tolerate temperatures as low as 28-32F for short periods, but they thrive best in temperatures above 50F.
Pepper plants can tolerate temperatures as low as 50 degrees Fahrenheit, but they thrive best in temperatures between 70-90 degrees Fahrenheit.
An avocado tree can tolerate temperatures as low as 28-32F for short periods, but it may be damaged if exposed to colder temperatures for an extended period of time.
Geraniums can survive in 40-degree weather, but they may not thrive and could be damaged if exposed to prolonged periods of cold temperatures. It is best to protect them or bring them indoors if temperatures drop significantly.
Grass seed can tolerate cold temperatures down to about 40 degrees Fahrenheit while still being able to grow successfully.
Examples of extremophiles include thermophiles that thrive at high temperatures, psychrophiles that survive in extremely cold environments, acidophiles that can tolerate acidic conditions, alkaliphiles that thrive in alkaline environments, and halophiles that live in highly saline habitats.
Geraniums are not typically considered cold hardy plants, as they are more suited to warmer climates. They may not survive frost or freezing temperatures.
Geraniums are hardy perennials so are not too fussy except for extremes. If you mean Zonal Pelargoniums they need frost protection.