I am reading AVI M4 - Watch out, watch out for creeping weed!

Everyone knows a teacher with a vegetable garden. But what if the class has to help? And the teacher warns against creeping weed? Super funny book about teacher Karel and his students in group 4.

Teacher Karel's class has a vegetable garden.
Beans, leeks and berries grow in it.
Goof is also allowed to plant something.
Her aunt's seeds do well.
The leaves are quite tasty.
But they do make you itch.
Not so bad in itself.
As long as you don't scratch …