The adverb in the sentence, Today Julia is preparing the soil for her corn seeds and young tomato plants is today. An adverb states how, what, when, or where.
Today
badly
I found a tomato in the refrigerator.
Jack ate the tomato
Here is an example sentence with the word "tomato":The tomato has a sour taste as it contains acids.
I like tomatoes. I grow tomatoes. A tomato is red.
She squashed the tomato.
the chef is chopping tomato
There is a controversy over how to pronounce tomato - you say to-may-to and I say to-mah-to.
Tomato soup is a heterogeneous mixture because it is chunky and it can be easily separated.
Tomato's, as in "A tomato's coloring"
The crimson tomato hung ripe on the vine.
That section of town is blighted by poverty. My tomato plants were blighted by the cold weather.