Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to grow sweet potatoes [title] Choose a sweet potato. [step] Slips are small sprouts that are grown from pre-existing sweet potato plants. You can choose to order these online or from a garden center, but you can also grow them at home easily.

Ending1: Find a mature, healthy sweet potato plant from the store or a friend's garden. [substeps] The most common and popular sweet potato varieties (available at most stores) are beauregard ,' bunch' porto ricos, and centennials. Ending2: [substeps] Consider growing a sweet potato in a large pot with the vegetables and two gallons of water. This will help keep the water from sinking to the bottom of the pot. Ending3: Check the label on any sweet potatoes you buy to determine whether they are suitable for your area. [substeps] Slips sprouting from a mix of sweet potatoes and other sweet potatoes can still be a good variety if you live in an area with a lot of dry conditions. Ending4: Large slips for a small garden like a backyard are relatively hard to grow, since they need to be moved out into the open during the winter. You can order some slips to grow from an online garden store, though they typically pay less.

Answer format: ending1/ending2/ending3/ending4