Read the passage carefully and choose the correct answer.

Many people work in London prefer to live outside it, and to go into their offices, factories or schools everyday by train, car or bus, even though this means they have to get up earlier in the morning and reach home later in the evening.

One advantage of living outside London is that houses are cheaper. Even small flat in London without a garden costs quite a lot to rent. With the same money one can get a little house in the country with a garden of one’s own. Then in the country one can rest from the noise and hurry of the town. Even though one has to get up earlier and spend more time in trains or buses, one can sleep well at night, during weekends and summer evenings one can enjoy the fresh, clean air of the country. If one likes gardens, one can spend his free time digging planting, watering and doing the other things that are needed in a garden. Then, when the flowers and the vegetables come up, one has the reward of one who has shared the secrets of nature.

The phrasal verb ‘come up’ means ________.