Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to grow biennial vegetables [title] Wait to plant until after the final frost to prevent seeding in the first year. [step] Biennials should be planted in the late spring or early summer to avoid early flowering from exposure to cold temperatures. If the plants flower during the first year, it is likely because they were exposed to frost.

Ending1: [substeps] While waiting to plant, store the vegetable seeds in bags in a warm, dry location. In colder climates, you can get a head start by planting the seeds indoors, and then moving them outside when the weather improves. Ending2: Varieties that do not flower then will flower later. [substeps] Before planting your vegetables in april or june, begin checking them every second day to make sure the soil is even. Ending3: During the growing season, using a frost rake every six to seven weeks is ideal. [substeps] Rows should be spaced with patches of grass spaced about two or three feet apart, and that grass should fall between 12-12 inches (30-61 cm) in length. Ending4: [substeps] If your plants are grown in the late spring or summer, wait for a temperature that's between 30 and 35 degrees fahrenheit (4 to 5 degrees celsius) for the ripen phase to improve growth. [title] Select a sunny area near the plant.

Answer format: ending1/ending2/ending3/ending4