Conductors and Insulators. In a conductor, electric current can flow freely, in an insulator it cannot. Metals such as copper typify conductors, while most non-metallic solids are said to be good insulators, having extremely high resistance to the flow of charge through them.onductors and Insulators. In a conductor, electric current can flow freely, in an insulator it cannot. Metals such as copper typify conductors, while most non-metallic solids are said to be good insulators, having extremely high resistance to the flow of charge through them.
Butterhead lettuce. A type of head lettuce whose botanical name is Lactuca sativa var. heirloom. Two common types are Boston and bibb lettuce. Have small, round, loosely formed heads with soft, buttery-textured leaves ranging from pale green on the outer leaves to pale yellow-green on the inner leaves.
Strong light tends to make lettuce bolt. You'll have more time to harvest lettuce grown in shade than lettuce grown in full sun. Mustard Greens - Especially good in shade if you are growing them for baby greens. Green Onions/Scallions - These will do well in shade throughout the growing season. Spinach - Like lettuce, spinach was made for the shade. It will bolt in full sun. So you get more time to harvest when it's bathed in shade.