Worldwide, there are more than 7,500 known varieties, 100 of which are grown commercially in the US. They all differ in shape, size, color, texture, aroma and flavor.

Asparagus comes in green, white, purple and wild varities. Look for the thinnest stalks possible; these are the most tender. Steer clear of limp and wilted asparagus.

For both Chinese and European chives, you’re looking for pert green blades without signs of yellowing, moisture or mildew.

Look for fiddleheads that are tightly curled and no bigger than a half-dollar. Any brown, papery bits clinging to the veggie are just a part of the plant, most of which will be rinsed off when you clean them.

Horseradish is a large and tapering root with a dark brown peel and creamy interior. Look for firm roots with no mushy or black spots.

This wild-foraged leafy green packs a nutritional punch with lots of protein, fiber, omega fatty acids and Vitamins A and C. Look for leaves that are perky.

Used both in cooking and herbal medicine, mint should have perky stems and leaves with no black spots or wilted parts. Fresh mint should also be very aromatic.

Morels are a wild, cone-shaped mushroom with honeycomb-like texture. When purchasing, avoid morels that are discolored, splotchy or slimy.

There are several varieties of mushrooms and they can be purchased fresh or dried. Look for fresh mushrooms without slimy, moldy or black spots.

Nettles are an herb resembling an oversized mint leaf and are best bought or harvested when they are young and the stems are tender, before flower buds appear.

Oregano and marjoram are both available as fresh or dried herbs. To preserve freshness, store dried herbs in a cool, dry place and store fresh herbs in the refrigerator.

Parsnips are a root vegetable that look like a pale carrot, usually a shade of pale yellow or ivory. Look for parsnips that are firm but not tough.

Pea shoots are very young pea plants. They can be eaten like a green - braised, sauteed or tossed into salads - or made into pesto. Look for bright green pea shoots that are not wilted.

No matter the variety of potato, be sure to store them in a cool, dark place with low humidity where they can be stored at least one month and up to three months.

Purslane has the most omega-3 fatty acids of any green vegetable. Its flavor is slightly tart and a bit lemony - perfect for summer salads.

Ramps are definitely delicious — a peppery and pungent cross between onion and garlic — and their ephemeral nature adds to their appeal. Make sure to select ramps without slimy or discolored patches.

With its distinctive smell, sage adds a savory note to many dishes. Look for sage that has perky, silvery green leaves and a strong smell, avoiding any withered or dry leaves.

Sorrel comes in both red and green varieties, but both resemble spinach. Sorrel has a sharp, tart, green apple taste that adds a tang to salads and cooked greens.

Fresh spinach leaves can be sold as loose leaves or still attached to the stem. Look for perky, evenly colored leaves with no mushy spots. Smaller leaves will be the most tender while larger leaves can be stringy in texture.

Although you can sprout many seeds, the two most common sprouted types are bean and alfalfa. Look for sprouts that are perky and smell fresh. Avoid any that smell off or that appear slimy or wilted.

Tarragon is an herb with a pungent, licorice-like flavor. Look for leaves that are perky and light green, avoiding any mushy or wilted bunches.

Tomatoes come in a dizzying array of colors and shapes, so rather than relying on color alone, look for tomatoes that are heavy and fragrant. Some scarring is normal on heirloom varieties, but avoid tomatoes with freshly torn skin.

Watercress is a leafy green vegetable with a peppery flavor that pairs really well with duck and other game meats. Try to avoid any mushy leaves, as they can spoil the others in storage.