Last week I was admiring a vegetable garden where just about every lettuce plant was reaching skyward, with flower buds about to cap the tops of the spires. Isn’t that the wrong way to grow lettuce?
Lettuce that flowers — “goes to seed” — becomes bitter and tough. In my own garden, I aspire to have no lettuce spires by sowing lettuce seeds every couple of weeks for a regular harvest of mild-flavored, succulent leaves or heads. The plants don’t have time to bolt.
Those bolting lettuces I was admiring were in a garden in Iowa, one of the gardens at the Seed Savers Exchange (www.seedsavers.org), an organization that every gardener should know about and a garden that I should have not waited so long to visit. The mission of Seed Savers Exchange is to save and preserve heirloom seeds, which are varieties that have been passed on down among …