@Annette136
Yeah, I change mine with the season Annette because our garden features prominentally in the listing description. As @John1080 said, it does pay to keep a bit of activity happening on your site and one of the best forms of activity is changing your photos. Although Airbnb don't officially say it, the algorithm that governs search placement responds to activity......Airbnb rewards success and the more activity that is happening on your listing the more prominent your placement will be in search pages.
I agree with @Sandra126 That shot of the good old 'blue collar plant' the Geranium is great! We feature them heavily here, they tollerate a day or two without love and care, and guests love them. You have a great listing Annette, all the best.
Cheers......Rob