With only three entries, judging (something I am not good at) here goes.
djb47, even though those flowers are in your backyard, I couldn't say this really depicts the theme "backyard" and though I like the flowers, composition is spot on.
Tamia, Yours, well, IMO should have shown the whole tree. Sorry, the idea of leaving just the leaves didn't look like someone's backyard. Perhaps a lower shot would have added more depth to depict a backyard. I'll give you the honorable mention.
So, our winner this week is Noel as his depicts what I thought a backyard would look like.
New one is up:
https://www.pentaxforums.com/forums/129-weekly-photo-challenges/331550-projec...s-my-home.html
I'm sorry my skills for critiquing just aren't up to par this week. I'm still recovering from that hurricane and what it did to my health.