Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to grow tomatoes upside down [title] Fill your seed starter cell with moist potting soil. [step] Continue watering the tomato, keeping it warm, and providing it with plenty of sunlight as it grows. The plant should be about 6 inches (15 cm) before you transplant it to the upside-down planter.

Ending1: This will ensure the plant and the root system are established enough to take root in the new location. [substeps] Don't let the tomato grow any bigger, otherwise the roots may get damaged when it's transplanted. Ending2: [substeps] For best results, it shouldn't be fully wet at all before transplanting. If it still feels wet, don't care. Ending3: As it grows, its roots will start to emerge from the soil. You should be able to see roots emerging from the soil 2 inches (5.1 cm) deep. Ending4: Keep the soil moist until the seeds are firm. [title] Then, you'll need to water the tomato once the seeds have germinated, but not so much that the tomato is up to the point of roosting out of water.

Answer format: ending1/ending2/ending3/ending4