Weeds aren't pretty, flowers are. Weeds grow every which way. You buy flowers to grow the way you want them to...tall, wide, etc.
An "annual" plant, because "annual" means once a year.
grass important because it is a plant and gives us us oxygen
Yes, you can plant annuals before the last expected frost date if you cover them when frost is a threat.
Hardy annuals are fine outside all year round. Half hardy annuals should be planted out after all danger of frost has passed.
They are grown as annuals.
annuals
Plants that live for a year are annuals.
Those are annuals
They are called annuals
A relationship of this is geese eating on grass around them because herbivores eat plants and geese eat grass and grass is a plant so this is a good relationship of this.
The Grass Family
Grass in its many forms is possibly the most important plant for human survival. If all grasses died then humanity would starve.