DM................Contrary to what many will tell you, growing some herbs (at least here in Hua-Hin) is the easiest thing in the world. I had a jungle growing, but the chickens have slowly but sure destroyed the lot, including the netting that was meant to keep them out.
If you're growing them for use in western type cooking, you can grow them in pots since most western dishes only require a few leaves/seeds. Thai dishes usually call for a lot more so you need a lot more growing than would back in the west. Your best bet is to plant directly in the ground but be sure to space them or else they grow tall and thin, and then just topple over. Okay, here are a few........
Lemon grass - Just buy some lemon grass from the local market, cut the bottom bits off about 5 or 6 inches from the base, and then stick those bottom bits into the ground. Plant them about 2 to 3 inches deep, and keep them well watered until they are established.
This stuff grows pretty damn quickly, so will need to be trimmed and thinned out from time to time. The good thing is, it looks quite nice even as a landscape plant, it requires no care at all once it's growing, and any Thai will gladly take any that you don't need. My advice would be to plant these away from your other herbs because they take up space and they give shade which you don't really want.
Ginger; Galangal - Once again, just buy fresh at the market and then plant the bulbs/roots in the ground. As with lemon grass, these four require no care at all once they start growing, and they all produce attractive plants. Expect your ginger and your galangal to reach a height of about 5 to 6 feet, and as with the lemon grass, they will need to be thinned out from time to time. I've found these grow all year round, and will thrive even during the dry season so long as you water them. They like full sun, but will grow even better in parts of the garden that get at least some shade daily.
Turmeric and Krachai - Exactly the same as the above two, apart from the fact that they are seasonal, and they don't get as tall. Stick the bulb/roots in the ground, and simply forget about them. When the rain season is upon us, they will sprout and grow, and once the dry season arrives, they'll die off, and when the next rain season arrives, up they'll come again, and in greater numbers. Both of these produce attractive landscape plants, so I would recommend planting them elsewhere in the garden, between any other regular plants.
Basil - Super easy to grow, and the seeds are readily available. Here in Thailand you seem to only get four different types of basil seeds - Holy Basil; Red Holy Basil; Thai Basil and Lemon Basil.
Holy basil grows wild on the side of the roads in Thailand during certain times of the year, so that just goes to show how easy it is to grow in. In a garden though, it will grow all year round if you continue watering it, and if you continue harvesting it. This is the basil they use in Kapao Moo.
Thai basil (sometimes called sweet basil) is even easier to grow, and it grows a lot quicker, as does lemon basil. Thai basil is the basil you'll see on the table if you order noodles. Lemon basil doesn't seem to be too popular here, and yet when I was growing it, it was used more than the other types. It tastes awesome and smells even better.
To plant these, loosen up some soil (you can mix in some compost if you want to) and then either sprinkle some seeds around, or make little furrows going in straight lines, and then sprinkle the seeds in them. These are very small seeds, so they must NOT be planted more than half a centimeter deep, which is why you might find it easier just to sprinkle a few on the ground, and then sprinkle a little bit of soil over them. Keep well watered, and they start sprouting after about three to five days.
All basil like sun, so full sun is not a problem at all, although you might have to give them a little water during the day, especially when they're still small. Once they're about 3" tall, thin the plants out so that there's about 10 to 15 inches between each one. When they get to about 15", you can cut the tops off, which then causes them to become more bush. Every time you cut a branch off, two new branches will grow. If you allow these to start getting flowers, you will have to plant more since they will then flower and usually die off. So, if you don't want to keep planting new ones, make sure you harvest enough to ensure they don't get to flower. The chances are, if you have a dozen of each, you'll never be able to use even a fraction of what you harvest, but so what. Just give away what you don't use, or alternatively, you can dry the leaves out and have dried basil like they use in the West.
Coriander - In Thailand, they use most the leaves only (Cilantro) and it's also sometimes called Chinese Parsley on the seed packets. Again, very easy to grow, but certainly a lot slower than basil. The seeds are also a lot bigger so can be planted a little deeper, but again, they can also just be sprinkled on top of the ground and then covered with a little dirt. They do have to be watered everyday during the dry season, as do all your other herbs. I found that these tend to get top-heavy and then fall over. You can stop this by putting in stakes, or by building the ground up around them. They need lots of sun but a little bit of shade won't do any harm. As with basil, just keep pruning them if you don't want them to flower. Of course if they do flower, well, then you get fresh coriander seeds which can be used for cooking or for planting a new crop.
Culantro - Sometimes called "saw leaf herb", these tend to grow better in semi shade rather than in full sun. I don't think it's used in many dishes, and we certainly didn't use much of it when I had some growing. Anyway, if you want to grow it, just follow the same directions as for cilantro/coriander, but try and provide some shade.
Dill - Quite a popular herb in Isaan, and also in Italian cooking I believe. Again, grow in the same way you do with coriander.
Garlic - just push individual bulbs into the soil, about 8" or so apart from each other, and water daily, especially in the dry season. Easy to grow, good looking, and very healthy.
Chili - Just collect some seeds from a ripe (red) chili, and then plant them about half an inch deep, and about one and a half feet apart. Water daily, and make sure they get lots of sun. You can grow all different chilies you get here in this manner, and even bell peppers.
Well DM, not sure what others you want to grow, but feel free to ask away and I'll try to answer wherever I can. Remember though, the info I've given here is only based on what has worked for me.
In fact, it worked so well, we weren't able to use even half of what I grew, and remember, all our meals are home cooked by a Thai.
Good luck
PS:- If there are typos in the above, I don't care. After all that typing, I'm certainly not going to proofread it......lol.
Don't try to impress me with your manner of dress cos a monkey himself is a monkey no less - cold fact