Chives are grown for their leaves, which are used for culinary purposes as flavoring herb, and provide a somewhat milder flavour than those of their neighbouring Allium species.
The plant is said to improve the memory and is used as a symbol of remembrance, especially in Australia and New Zealand to commemorate ANZAC Day. The leaves are used to flavor various foods, like stuffings and roast meats. Rosemary contains the antioxidants carnosic acid and rosmarinic acid, and other bioactive compounds including camphor, caffeic acid, ursolic acid, betulinic acid, rosmaridiphenol, and rosmanol. Some of these may be useful in preventing or treating cancers, strokes and Alzheimer's Disease. 
Now that I've known this plant, I grow goto cola in a small pot. I would see that the birds would pick on it each morning too. Each time I remember, I would pick a few pieces and munch on them.Gotu kola (Centella asiatica) has been used to treat a number of conditions for thousands of years in India, China, and Indonesia. It was used to heal wounds, improve mental clarity, and treat skin conditions such as leprosy and psoriasis. Some people use it to treat respiratory infections such as colds, and it was used for that in the past in China. It has been called "the fountain of life" because legend has it that an ancient Chinese herbalist lived for more than 200 years as a result of taking gotu kola.
Historically, gotu kola has also been used to treat syphilis, hepatitis, stomach ulcers, mental fatigue, epilepsy, diarrhea, fever, and asthma. Today, in the U.S. and Europe gotu kola is most often used to treat varicose veins and chronic venous insufficiency, a condition where blood pools in the legs. It's also used in ointments to treat psoriasis and help heal minor wounds.
Read more: http://www.umm.edu/altmed/articles/gotu-kola-000253.htm#ixzz1kATtDNIk
Basil is commonly used fresh in cooked recipes. In general, it is added at the last moment, as cooking quickly destroys the flavor. The fresh herb can be kept for a short time in plastic bags in the refrigerator, or for a longer period in the freezer, after being blanched quickly in boiling water. The dried herb also loses most of its flavor, and what little flavor remains tastes very different, with a weak coumarin flavor, like hay.
Basil is one of the main ingredients in pesto—a green Italian oil-and-herb sauce. Its other main ingredients are olive oil, garlic, and pine nuts.
Source: http://en.wikipedia.org/wiki/Basil
This is the my home-made pesto. Pounded basil leaves with garlic salt & pepper and grated parmesan cheese topped with olive oil
Oregano is an important culinary herb, used for the flavor of its leaves, which can be more flavourful when dried than fresh.[6] It has an aromatic, warm and slightly bitter taste, which can vary in intensity. Good quality oregano may be strong enough almost to numb the tongue, but the cultivars adapted to colder climates often have a lesser flavor. Factors such as climate, seasons and soil composition may affect the aromatic oils present, and this effect may be greater than the differences between the various species of plants.
Oregano's most prominent modern use is as the staple herb of Italian-American cuisine. Its popularity in the US began when soldiers returning from World War II brought back with them a taste for the “pizza herb”,[7] which had probably been eaten in southern Italy for centuries. There, it is most frequently used with roasted, fried or grilled vegetables, meat and fish. Unlike most Italian herbs,[citation needed] oregano combines well with spicy foods, which are popular in southern Italy. It is less commonly used in the north of the country, as marjoram generally is preferred.
The herb is also widely used in Turkish, Palestinian, Lebanese, Egyptian, Syrian, Greek, Portuguese, Spanish, Philippine and Latin American cuisines.
In Turkish cuisine, oregano is mostly used for flavoring meat, especially for mutton and lamb. In barbecue and kebab restaurants, it can be usually found on table, together with paprika, salt and pepper.
The leaves are most often used in Greece to add flavor to Greek salad, and is usually added to the lemon-olive oil sauce that accompanies many fish or meat barbecues and some casseroles.
Oregano is also used by chefs in the southern Philippines to eliminate the odor of carabao or beef when boiling it, while simultaneously imparting flavor.
Source: http://en.wikipedia.org/wiki/Oregano
I had my close encounter with tarragon when this was served after meals at Aboy's, a Filipino restaurant in Bacolod City. Very light and refreshing after a hearty meal.
Tarragon is one of the four fines herbes of French cooking, and particularly suitable for chicken, lasagna, fish and egg dishes. Tarragon is one of the main components of Béarnaise sauce. Fresh, lightly bruised sprigs of tarragon may be steeped in vinegar to impart their flavor.
Tarragon is called the "King of Herbs" by the French, and with good reason. It is the main flavoring in many of the sauces that form the foundation of classic French cuisine, such as ba�rnaise, rigavote and tartare. When paired with chopped sprigs of fresh parsley, chives, and chervil, you have the traditional seasoning blend known as fines herbs. This aromatic blend enhances the flavors of egg, chicken and fish dishes, and is also used as a basis for salad dressings. When using tarragon in cooked dishes, it is best to add it at the end, as heat tends to decrease its flavor. Unlike most of the other herbs, tarragon loses the potency of its flavor when dried. This may be one reason it is so frequently preserved in vinegar, which captures tarragon's essence and creates a tasty condiment that can be used in dressings, mayonnaise and as a zesty deglazing alternative to wine.
French tarragon (Artemisia dracunculus) is the variety most often used in recipes. Its flavor is sweeter and its leaves are more delicate than its relative Russian tarragon, (Artemesia dracunculoides), which tends to have coarser, paler leaves and a bitter, inferior flavor. Unfortunately, whereas the Russian variety spreads and reproduces easily, French tarragon cannot be propagated by seed but must be cultivated by cuttings and root divisions. For a healthy plant, it requires rich, well drained soil and full sun.
While most herbs have a long history of use as medicines, and a equally long list of the ailments they were supposed to cure, tarragon's list is relatively short. This is most likely due to the fact that tarragon loses its aromatic volatile oils as the herb dries.
Tarragon was used by the ancient Greeks as a remedy for toothache. Today we know that tarragon contains an anesthetic chemical, eugenol, which is the major constituent of anesthetic clove oil, making its use for temporary pain relief understandable. During medieval times there was a belief, called the Doctrine of Signatures, which stated that an herb's appearance revealed its medicinal value. According to this philosophy, tarragon was thought to cure snake bites, due to the serpentine shape of its roots. Even tarragon's species name, dracunculus, comes from the Latin for dragon, again referring to the shape of its root, and adding to the myth of curing bites from venomous beasts and mad dogs.
French tarragon's generic name, Artemisia, comes from the Greek goddess Artemis, goddess of the moon. Many of the plants in that family, Dusty Miller and Sagebush for example, have a soft, silvery color, as if bathed in moonbeams. The common name, tarragon, is thought to be a corruption of the Arabic word "tarkhum" meaning little dragon.
Source: http://www.sallybernstein.com/food/columns/gilbert/tarragon.htm
