Worksheet: Stars and the H-R Diagram. Background: The Hertzsprung-Russell diagram is actually a graph that illustrates the. relationship that exists between the average surface temperature of stars and their. absolute magnitude, which is how bright they would appear to be if they were al the. same distance away.
The most important time to fertilize your lawn is in the fall to help you lawn develop a strong root system. Apply 1.5 to 2.5 pounds of nitrogen per 1,000 square feet. Use a lawn fertilizer with a higher amount of nitrogen, if your grass type is Kentucky bluegrass or perennial ryegrass, or soil is sandy, or grass clippings are not returned to the lawn. Greenview recommends applying Greenview Fairway Formula Fall Fertilizer 0 Phosphate in early September.
When sowing, dampen the soil and then sprinkle the seeds on top of it. Cover with a thin layer of soil. Gently water daily until they germinate. Thin seedlings as they grow, and use them in salads. Always wash before eating. Light: Plant your lettuce in a spot that gets four to six hours of sun daily.