From WoW: IncGamers World of Warcraft Wiki

Patch Changes to Herbalism

Patch 2.1.0 (2007-05-22)

• The Dreaming Glory buff now correctly works in combat.
• Netherbloom no longer causes negative effects, although the positive effects happen less frequently. Additionally, the effects will not replace one another.
• Nightmare Vine has a reduced chance to poison the herbalist.
• Nightmare Seed found with herbalism now requires level 60 to use.
• Underbog Colossus have an increased number of herbs on them when harvested by an herbalist.

Patch 1.8.0 (11 October 2005)

• Blindweed has been increased in size, making it easier to see.

Patch 1.7.0 (13 September 2005)

• Black Lotus is no longer soulbound.
• Significantly more Stranglekelp has started washing ashore to the beaches of the world.

Patch 1.2.2 (27 January 2005)

• Bug Fix. Herbs nodes will remain active if they are not fully emptied.

Beta Patch 0.12.0 (10 October 2004)

• The herbs needed to support high end alchemy have been added to the world.

Beta Patch 0.10.0 (19 September 2004)

• Merchant purchase/sale price of herbs significantly increased.

Beta Patch 0.9.0 (15 August 2004)

• You can now use detect herbs/minerals while mounted.
• Price that gems sell back to stores increased slightly to be somewhat closer to their real value.
• Wildvine drop rate significantly improved (3 times old rate).

Beta Patch 0.8.0 (7th July 2004)

• Artisan Herbalism has been added.
• Stranglekelp has been reduced to Herbalism skill 85.