Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to grow organic lettuce [title] Prepare the soil for planting. [step] Ensure that the soil has a ph balance between 6.0 and 6.8. The ground needs to be well-drained and full of nutrient-rich soil that is full of compost or aged manure.

Ending1: Lettuce plants do well in steady amounts of nitrogen, so apply blood meal or compost tea to the soil before adding the seeds. [substeps] If you are unsure what your soil's ph is, you can purchase a soil testing kit from your local garden supply store. Ending2: [substeps] Use a ph meter to determine the ph level of the soil. Above 6.0, it's ideal for growing the spinach. Ending3: [substeps] If you fertilize your lettuce, select a sandy soil, as you do not want your produce to plant in low level nutrient rich soil. As a rule of thumb, mix your fertilizer according to the package instructions. Ending4: [substeps] You can even plant organic vegetables in the compost if you have commercial garden equipment. [title] Plant your lettuce on a pesticide free cutting board.

Answer format: ending1/ending2/ending3/ending4