Garlic mustard will also be at its peak now, with sweet-and-hot, garlic-flavored leaves and flowers. This plant is invasive, so its best to eat as much as possible (it's wonderful in salads and pesto) before it spreads.
Field garlic is even more garlicky, especially the underground bulbs, now at their peak. They're easy to dig up, and very abundant.
Burdock is also very common here. You'll need a shovel to unearth the deep taproots, but it's well worth the effort. A staple in Japanese cuisine, the huge, nutritious roots taste like a combination of artichokes and potatoes after you cook them.
Violet leaves, common here too, are also delicious, raw or cooked. We'll also find lamb's-quarters, which taste like spinach, but better; as well as lemony flavored wood sorrel.
Poison ivy also grows here, as it does in virtually all parks, so you'll learn how to recognize it, and how to use jewelweed, which usually grows nearby, to prevent any skin irritation if you're rash enough to touch poison ivy.