I made this Foxflower farming guide to help out players who want to farm the herbs instead of buying them from the Auction House. You can pick this Herb from skill 1, you will get the same number of herbs as if you had Herbalism 100.
One of the new features in World of Warcraft Legion is that herbs have ranks now. You can get the new ranks from quest items that you get by picking [Foxflower]. Once you finish the quest you get from the herb and the follow up quest, you will get the new rank.
Rank 1 : Gather Foxflower more effectively.
Rank 2 : You can get [Blood of Sargeras] when gathering Foxflower.
Rank 3 : Gather even more materials from each Foxflower plant.
Foxflower
Get these three items to speed up farming: [Leystone Hoofplates], [Demonsteel Stirrups], [Stonehide Leather Barding].
If you have the 
[Sky Golem] mount, you can use that instead of the Demonsteel Stirrups, and if your class has a tanking spec, you should switch to that while farming, so you won't get dazed and you don't have to use Stonehide Leather Barding.
Don't forget to enchant your gloves with 
[Enchant Gloves - Legion Herbalism]! This enchant brings gathering time down from 1.5 seconds to 0.5 seconds. This is really important if you gather while mounted, because mobs can still interrupt your casting.
Highmountain
This herbs is heavily farmed on high population realms, and sometimes you can't even find a single herb if you try to farm at peak times.
The layout of this zone is really bad for farming herbs because there are a lot of mobs you can't avoid, and there are mountains everywhere. It will take a few laps in the zone until you learn this farming route.
Don't forget to use the 
[Majestic Elderhorn Hoof] if you have it. (30% increased mount speed for 10 minutes, but it doesn't stack with Leystone Hoofplates) It's dropped by Majestic Elderhorn.
Important! A fox can spawn and start runing away while leaving Foxflowers on the ground. You have to run over them to loot them.
If you barely find any herb, it means someone is already farming there. Try the alternative route below. (This route and the next ones is for players without flying mount.)
The two red X are flight paths, so once you reach the end of the path at Felbane Camp, fly to Prepfoot, then there is a path there were you can get down to the foot of the mountain. Blind Marshlands is a level 110 area, so lowers levels should skip that part and just head to Felbane camp right away.
If you have flying mount and use the recommended enchants above, you might farm too fast and you need to take a bigger loop around the zone to allow the herbs to respawn. So use this map below:
