On a side note, I also made pesto with the garden basil and cooked up some zucchini and yellow squash. Yum!
On to the mysterious sprouts... For the past several weeks I've seen what I swear are squash and tomatoes seedlings. I could be wrong about the tomatoes, but the squash family is pretty distinct. I couldn't figure out how these were getting everywhere, especially in the back yard. Finally I figured out that I had used homemade compost in the recent plantings. The compost must not have been hot enough to kill the seeds, so last seasons veggies were sprouting in the garden. I guess this is why you're supposed to avoid weeds in the compost pile. A few squash plants are much easier to deal with than milkweed.