I think landscaping is a luxury, but if you're also running a lawn mowing service, then I can see how that's something folks can't do without. They might not own a mower or might not be healthy enough to push a mower. It wouldn't be a big deal except some cities and counties will fine owners if they don't mow their lawn. That's especially true if a neighbor complains. I'm not saying that you should come down on your prices though. You know your customers, and their means, much better than I do.
I've dealt with more negotiating than usual. The farmers market is closed in my area, so I'm open to negotiating more than I'd usually like. I'm coming down on things that will rot if they aren't used up in time. I'm holding onto things that will last for ages and will retain their value.