Venturehomes.ca] suggest you might want to plan ahead for this and do some pictures of your yard and garden now.
The reason being that a yard looks very different in the winter than it does in the spring or summer. While the real thing is always better, some well done photographs of the yard in summer can be put together in marketing materials to give an illustration of the landscaping in greener season.
I would only say that you might want to to be careful not to use them exclusively in the listing because this may give buyers the false impression that the property has been listed longer than it has. This can affect their impression of the property, in that they may unfairly expect a bargain, thinking the property has been 'lingering' on market.
But certainly on a feature sheet or virtual listing, green photographs can be an effective addition to the gallery. If you're not much of a photographer, maybe contact a professional service (like Venturehomes.ca) to do some outdoor photography for you now.