There are many types of herb seed available for RuneScape gold both harvesting and planting, including Ranarr, Snapdragon, Torstol Toadflax be sure to use only the most profitable ones.
There seven herb patches available in RuneScape and some are unlocked via quests and other actions. The patches are located at Ardougne, Falador, Catcherby, Draynor Village, Port Phasmatys, Troll Stronghold and Harmony Island. Remember the fact that for Herb runs, in addition to the regular inventory of farming it is necessary to have secateurs and seed dibber.
Begin your run in Port Phasmatys where you can reach Ectophile via the port. Run to the west where you'll find the first herb patch. When you're finished, teleport to Ardougne and harvest your herbs there. The next destination is Falador and the most efficient method to reach it is by using Explorer's Ring. The next one is it's Harmony Island via house teleporting tablet, Catherby, Draynor Village and Troll Stronghold. It is important to remember that while wielding Magic Secateurs players have increased the likelihood of getting herbs. A minimum number will be 6 but you're very likely to get more than the amount.
The most efficient farming route that you could take is to learn to farm every day. It's not a huge investment of time and will make you improve your skills every day. The run starts at Varrock palace, where you'll see your first tree patch.
Take your Spirit Tree teleport or use Slayer Ring to get to Tree Gnome Stronghold where there are two patches, one for normal trees as well as for fruits. Teleport yourself via Spirit Tree to Tree Gnome Village (fruit tree) (fruit tree) - Follow Elkoy to cheap RS gold make your way through maze and travel little bit towards the west.