Eli5 Why are weeds so hard to kill while desirable plants so hard to keep alive?

Question

Weeds grow, well, like weeds, out of the cracks of the pavement with nothing but municipal runoff to keep them alive. Meanwhile I have to work tirelessly to keep my tomato and pepper plants happy and fruitful. Why do weeds dominate a garden?

In: 61

Answer 1

Weed that grow naturally, well goes there naturally the conditions are ideal for it. The plant you want to grow, what you brought there from somewhere else, might not have ideal conditions. That is why you need to tend your plants