Answer:
When it comes to using fertilizer in their gardens, some people are hesitant. They understand that a little fertilizer helps plants grow but that excess fertilizer can be toxic to plants, killing them.
Step-by-step explanation:
"hesitant" comes from the verb "hesitating". Perhaps you've hesitated before speaking before, that is you had to think first before you spoke; you didn't speak immediately.
"Excess" means "too much" in this sentence. "Excess" in general means "extra".
"Toxic" means "killing them" as they said. If something is toxic it is harmful to your health, like poison.
hope this helps!