The climate is the pattern of weather over the average year. The temperatures of summer and winter, of day and night, are part of the climate. The amount of rain, snow, and other kinds of 'precipitation' is part of the climate. Climate also includes wind and the average number of hours of sunshine. Surface features and climate determine which plants grow in an area.
Plants have special needs.
Some, such as lichens, grow on bare rock. Others need rich, loamy soil. Still others, such as the birch, do better in rocky soil. Many plants die if their roots become too wet. Others prefer wet roots and thrive in boggy conditions.