I got the Herblore Guide from my friend called Kiroma....
First teleport on the portal near general store of Edgeville.
Then buy the seeds depending your herblore level:
Name__________| Level req.|_Exp herb_|_Exp farming_|_Potion resultCandatine seed__|_level 1__|_700 exp__|_1200 exp__|_Super Defence Potion(4)
Irit seed________|_level 1__|_700 exp__|_1200 exp__|_Super Attack Potion(4)
Kwuarm seed____|_level 1__| 700 exp__|_1200 exp__|_Super Strength Potion(4)Darf Weed seed__|_level 20_|_1500 exp_|_4500 exp_|_Ranging Potion(4)
Lantadyme seed__|_level 20_|_1500 exp_|_2000 exp_|_Magic Potion(4)
Snapdragon seed_|_level 35_|_1700 exp_|_2000 exp_|_Super Restore Potion(4)*Ranarr seed_____|_level 40_|_2800 exp_|_3000 exp_|_Prayer Potion(4)
Toad Flax seed___|_level 60_|_3000 exp_|_7500 exp_|_Saradomin Brew Potion(4) *This potion have the same effect as a Prayer Potion(4).I should you train with Dark Weed seeds.
The level is for both skills.
When you plant the seed you will get farming exp, buy vial of water from the npc near you, and mix the vial of water with your herb to make the wanted potion.
The farming exp is higher than herblore exp. Later I will post some images