Real Estate Law USA.com

I am a tenant renting from a landlord/owner of the complex. She verbally agreed with my fiance and I on several occasions that we could do any type of yard work that we wished. My fiance even confronted her a third time, telling her that we were going to be relandscaping and maintaining the small yard area. She said that that would be wonderful and by all means go ahead with it. So I spent hours and hours digging up her poorly planted bulbs, and overgrown weeds, such as wild onions, scotch broom, common prickly weeds, etc.
My plan was to put in a lawn, re-locate her Callalilies, and plant more beautiful plants around the area, to make it look much nicer than before, and for the enjoyment of other tenants and myself.
She recently came to check up on the place and told me that she did not want a lawn, and that she wanted her bulbs back.
I am really upset, seeing as I am nearly 8 months pregnant and I put so much labor into it. My question is, can I still keep up my work,
considering that I am not destroying her property, but adding beauty to it?
She would never dream of doing this herself, because her interest in the place is far gone, she does not maintain anything. Our windows need to be redone, as they are molding and broken, our pipe system is the sh its, they don’t drain, and everything else is going under.
If I did move out, and no one were to maintain the place, it’s not like she would care, because it was that way when I moved in, like I said it was full of poorly planted bulbs and highly weeded.