The taste of an heirloom planet can be much richer than over farmed variates picked before ripeness. Plus how cool is it to serve pink tomatoes and exotic basils to your family? I have found the old, time-tested herbs are much heartier than the pre-sprouted ones you might find in the local nursery. These plants have a much greater resistance and sturdiness compared to lot of over engineered ones.
White Flower Farm: Heirloom Tomatoes pack.
Trees of Antiquity: Wonderful Heirloom and organic apple trees and many other varieties as well.
Backyard Berry Plants: More berries than you can shake a stick at.
Baker Creek Seeds: A great resource for heirloom seeds.
The Tasteful Garden: Ready to plant herbs and veggies.