For most of history the garden was an essential source of food and medicine with little space to grow purely ornamental plants.
How to identify your seedlings:
Fennel seedlings have long feathery leaves with the aroma of aniseed.
Lemon Balm seedlings have oval-shaped and nettle-like leaves with a citrus scent.
Winter Savory seedlings have delicate needle-like leaves with the fragrance of thyme.