Vegetable,Plants / sq ft,Spacing,Notes
Tomatoes,1,30 cm,Train vertically to save space
Peppers,1,30 cm,Good in corners of beds
Broccoli,1,45 cm,Takes 1 full sq ft; large plant
Cabbage,1,30–45 cm,Mini varieties fit closer
Cucumbers,2,15 cm,Grow vertically on trellis
Pole beans,8,8–10 cm,Grow vertically; great use of space
Bush beans,9,10 cm,Plant 3 rounds 3 weeks apart
Peas,8,8 cm,Plant against trellis or fence
Lettuce,4,15 cm,Succession sow every 2 weeks
Kale,1–2,30–45 cm,Harvest outer leaves; long season
Spinach,9,10 cm,Spring and fall crop; bolts in heat
Swiss chard,4,15 cm,Very productive; tolerates light frost
Carrots,16,8 cm,Need 30+ cm deep bed
Radishes,16,8 cm,Ready in 25 days; excellent gap filler
Onions,9,10 cm,Start sets early; plant before last frost
Garlic,9,10 cm,Plant in fall for summer harvest
Beets,9,10 cm,Eat both roots and greens
Basil,1,30 cm,Plant near tomatoes; harvest regularly
Parsley,3–4,15 cm,Biennial; overwinters in mild areas
Dill,4,15 cm,Succession sow; attracts beneficial insects
Marigolds,1–4,15–30 cm,Pest deterrent; plant at bed corners
Eggplant,1,30 cm,Listed by the page under 1 per square foot
Cauliflower,1,30 cm,Listed by the page under 1 per square foot
Turnips,9,10 cm,Listed by the page under 9 per square foot
Green onions,16,8 cm,Listed by the page under 16 per square foot
Thyme,16,8 cm,Thin herb; listed by the page under 16 per square foot

Source: GrowersGuide.ca — https://growersguide.ca/blog/square-foot-gardening-guide