There are some really useful potions to be made out of some really common stuff... how about:
Columbine root pulp + St Jahn's wort = 44% Chameleon for almost 2 1/2 minutes.
Flax seeds - every one is a 24 point, 78 second Restore Maicka for a master Alchemist with top equipment. Like Acadian said, chug 4 of these, and you can cast a ~100 pt spell every second - that's basically nonstop. And Flax is everywhere on the West Weald.
Flax + Sacred Lotus - 272 points of Feather for 880 seconds, that's almost 15 minutes. Better than the best Feather spell available, and you can chug up to 4 of them to loot Rockmilk Cave in one haul.
Aloe Vera + Wormwood - 50 seconds of Invisibility.
The funky poisons are usually the stars of the Alchemy show, but the utility value of several easy-to-make brews shouldn't be underestimated. Just gather as you explore, and you'll have plenty of supplies for good utility potions.
Add some Lavander to that Aloe Vera and Wormwood you get Healing + Invisibility.
Thats a hide and heal potion for me.
I like to play dead is dead characters so these are invalluable to me,for those times when I really screwed up.
I allways carry a couple of them with me.
Also Alchemy can do every thing Alteration can do except pick locks.
Infact Conjuration is the only magick skill that Alchemy can't at least do a few things of.
One more thing.
As Savlian said above,that click you get with a succesfull harvest is a great feeling,it kind of sounds like snapping fresh greenbeans. :liplick: