Here is additional advice to reinforce the initial question with additional detail including web sources and reference articles. 

The minimum amount of land needed for self-sustainable food varies depending on the source. According to the Food and Agricultural Organization, the minimum amount of land needed for self-sustainable food in North America or Western Europe is 17 acres per person¹. However, proponents of aquaponics say that 90% of our dietary needs can be grown in 50 square feet¹. Research in the 1970s by John Jeavons and the Ecology Action Organisation found that 4,000 sq ft (about 370 sq metres) of growing space was enough land to sustain one person on a vegetarian diet for a year².

As for what plants to grow, it depends on your dietary needs and preferences. Some suggestions for cost-effective crops are herbs, cut-and-come-again salad leaves like lettuce and rocket, salad additions like spring onions and radish, runner beans, and soft fruit².

You can find more information on this topic by visiting websites like: 

[Primal Survivor](https://bing.com/search?q=minimum+garden+size+for+self-sustaining+for+1+person) ¹.

[The Guardian](https://www.theguardian.com/environment/2023/mar/19/readers-reply-how-big-a-garden-would-you-need-to-be-self-sufficient-for-a-family-of-four) ².

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There are many other web sources of information on this topic. Some websites that provide information on creating a self-sustaining garden.
These websites provide information on various aspects of creating a self-sustaining garden, such as using companion planting, collecting rainwater for irrigation, composting, and growing both cool and warm season vegetables to stretch out the harvest period1234. 

[Better Homesteading](https://betterhomesteading.com/homestead-garden/vegetable-growing/self-sustaining-garden-guide/) ¹.

[Homes and Gardens](https://www.homesandgardens.com/gardens/create-an-eco-friendly-garden-220348) ².

[Growing In The Garden](https://growinginthegarden.com/self-sufficient-gardening/) ³. 

[Gardening Know How](https://www.gardeningknowhow.com/edible/vegetables/vgen/self-sufficient-garden.htm) ⁴.
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