From the patterns, GNW, I'd agree that something is munching on your plants. Though, I've also seen similar patterns if plants are frost bitten.
I've been doing a lot of work getting landscaping done. A friend gave me tons of bulbs (wrong time of year to transplant them, but she needed to thin her gardens, so I'll see what grows) and hostas. So, I got flowerbeds in all around the house. Plus, the small "swampy" area I started landscaping last summer I've expanded this year. I'm still planting a smattering of this and that around the yard, and leaving the tags on them all so whatever lives until next year, I'll remember the name to buy more of it.
We still had frost this week, but I think by next week, I should be able to plant a vegetable garden. I will be putting in raised beds (because I don't really have soil, mostly just clay and rocks...found some really pretty rocks to make into borders for my one garden though) and surrounding them with hardware cloth to keep the deer out. I'll be happy to just get some tomatoes and peppers.