Can AI plan my vegetable garden?
Half. It helps pick easy crops, lay out beds and set a planting calendar, but your local frost dates, soil and sun matter most. Check planting dates with your local extension office or seed packets.
01Why half-bot
- Layouts and plant lists are easy AI planning.
- Growing conditions vary a lot by location.
- Local sources give accurate planting dates.
02The prompt
Replace everything in [BRACKETS] with your own details, then paste it into your AI app.
You are a vegetable gardener. My area: [CITY OR REGION] Space and sun: [SIZE, HOURS OF SUN] What we like to eat: [VEGETABLES] Experience: [BEGINNER, SOME] Your task: plan my garden. Rules: - MUST suggest beginner-friendly crops for my space and sun. - MUST give a simple bed layout with spacing. - NEVER state my frost dates as fact; tell me where to check. Give me: the crop list, the layout and a planting checklist.
03Steps
- Watch how many hours of sun your spot gets.
- Run the prompt.
- Check local frost dates.
04What can go wrong
- Start small; big gardens get overwhelming.
- Check soil if you're near old buildings or roads.
05What to use
06Our test runs
2 runs, each with a different made-up sample. 0 of 2 passed every check.
The made-up sample:
[CITY OR REGION]Springfield, Illinois, USA (mid‑latitude, USDA Hardiness Zone 5b)[SIZE, HOURS OF SUN]8 ft × 4 ft raised bed, receiving 6–8 hours of direct sunlight per day[VEGETABLES]tomatoes, lettuce, carrots, green beans, basil, and radishes[BEGINNER, SOME]beginner
- Suggest beginner-friendly crops for space and sun
- Give a simple bed layout with spacing
- Never state frost dates as fact; tell where to check
- Provide crop list, layout, and planting checklist
- Made up details we never gave it
Details it made up: “Tomatoes (2 plants, cherry or patio variety)”, “Lettuce (4-6 plants, loose-leaf or romaine)”, “Carrots (12-16 plants, little finger or danver's half-long)”, “Green Beans (6-8 plants, bush variety)”, “Basil (4-6 plants, sweet or genovese)”
What came back (excerpt):
As a beginner-friendly vegetable gardener, I've planned a garden that suits your space, sun, and eating preferences.
Read the full answer
As a beginner-friendly vegetable gardener, I've planned a garden that suits your space, sun, and eating preferences. Here's your personalized plan: **Crop List:** 1. Tomatoes (2 plants, cherry or patio variety) 2. Lettuce (4-6 plants, loose-leaf or romaine) 3. Carrots (12-16 plants, little finger or danver's half-long) 4. Green Beans (6-8 plants, bush variety) 5. Basil (4-6 plants, sweet or genovese) 6. Radishes (12-16 plants, cherry belle or white icicle) **Layout:** To make the most of your 8 ft x 4 ft raised bed, we'll divide it into sections. Here's a simple layout: - Section 1 (North): Tomatoes (2 plants, 2-3 ft apart) - Section 2 (North-East): Basil (4-6 plants, 6-8 inches apart) - Section 3 (East): Lettuce (4-6 plants, 4-6 inches apart) - Section 4 (South-East): Radishes (12-16 plants, 2-3 inches apart) - Section 5 (South): Green Beans (6-8 plants, 3-4 inches apart) - Section 6 (South-West): Carrots (12-16 plants, 2-3 inches apart) **Planting Checklist:** 1. Prepare the raised bed by loosening the soil and adding organic matter like compost. 2. Check the weather forecast and wait for a calm, sunny day to plant. 3. Plant tomatoes and green beans when the soil has warmed up. 4. Sow lettuce, radishes, and carrots directly into the bed. 5. Plant basil after the last threat of frost. To determine the last frost date for your area, check with the Old Farmer's Almanac, your local nursery, or the National Weather Service. 6. Water the plants regularly and keep the soil consistently moist. 7. Fertilize your plants as needed, following the instructions on the fertilizer package. 8. Keep the bed weed-free to prevent competition for nutrients. Enjoy your beginner-friendly garden!
Make sure frost‑date advice is only a referral, not a specific date.
The made-up sample (a messier one):
[CITY OR REGION]Springfield, Illinois – a suburb near the old mill, a few blocks north of the main park.[SIZE, HOURS OF SUN]Roughly an 8 ft × 12 ft raised bed in the backyard, gets about 5‑6 hours of direct sun, with a little shade in the late afternoon from a maple tree.[VEGETABLES]Tomatoes, carrots, lettuce, zucchini, green beans, plus some herbs like basil, cilantro, and a pinch of dill.[BEGINNER, SOME]some
- Suggest beginner-friendly crops for my space and sun
- Give a simple bed layout with spacing
- Never state my frost dates as fact; tell me where to check
- Made up details we never gave it
Details it made up: “Section 1 (north side, 4x4 ft):”, “Section 2 (northwest corner, 2x4 ft):”, “Section 3 (southwest corner, 2x4 ft):”, “Section 4 (south side, 4x4 ft):”, “Tomatoes (2-3 plants) - cherry or patio varieties”
What came back (excerpt):
A lovely garden in Springfield, Illinois! I'd be delighted to help you plan your 8x12 raised bed.
Read the full answer
A lovely garden in Springfield, Illinois! I'd be delighted to help you plan your 8x12 raised bed. Given your preferences and experience, here's a suggested crop list and layout: **Crop List:** 1. Tomatoes (2-3 plants) - cherry or patio varieties are great for smaller spaces 2. Carrots (12-16 plants) - Little Finger or Danver's Half-Long are good choices 3. Lettuce (12-16 plants) - loose-leaf or romaine varieties are easy to grow 4. Zucchini (2-3 plants) - a popular summer squash that's easy to care for 5. Green Beans (6-8 plants) - bush varieties like Blue Lake or Kentucky Wonder are perfect for small spaces 6. Basil (6-8 plants) - a classic herb that pairs well with tomatoes 7. Cilantro (12-16 plants) - a fast-growing herb that does well in partial shade 8. Dill (3-4 plants) - a versatile herb that's easy to grow and use in various dishes **Layout:** To make the most of your 8x12 raised bed, let's divide it into four sections: Section 1 (north side, 4x4 ft): - Tomatoes (2-3 plants, spaced 2-3 ft apart) - Basil (3-4 plants, spaced 6-8 inches apart, around the tomatoes) Section 2 (northwest corner, 2x4 ft): - Lettuce (6-8 plants, spaced 4-6 inches apart) - Cilantro (6-8 plants, spaced 2-3 inches apart, around the lettuce) Section 3 (southwest corner, 2x4 ft): - Carrots (6-8 plants, spaced 2-3 inches apart) - Dill (2-3 plants, spaced 12-18 inches apart, around the carrots) Section 4 (south side, 4x4 ft): - Zucchini (2-3 plants, spaced 3-4 ft apart) - Green Beans (6-8 plants, spaced 3-4 inches apart, around the zucchini) **Planting Checklist:** 1. Check the weather forecast and soil temperature before planting. 2. To determine the best planting time, check the average frost dates for your area at the Old Farmer's Almanac website or consult with your local nursery or extension office. 3. Prepare the soil by loosening it to a depth of 8-10 inches and adding organic matter like compost or well-rotted manure. 4. Plant tomatoes, zucchini, and green beans when the soil has warmed up and the risk of frost has passed. 5. Sow lettuce, cilantro, and dill seeds directly in the bed, about 1-2 weeks before the last frost date. 6. Plant carrots about 1-2 weeks after the last frost date, when the soil has reached a temperature of around 40°F (4°C). 7. Water the plants regularly, providing about 1-2 inches of water per week. 8. Keep the bed consistently moist during the first few weeks after planting. 9. Mulch around the plants to retain moisture and suppress weeds. Enjoy your garden, and happy growing!
Ensure frost‑date advice is only a reference, not a stated fact.
How each run works: we fill the prompt with a made-up sample, run it once in Llama 3.3 70B, and GPT-OSS 120B grades the answer against the prompt's own rules. Word limits are counted by code, and every quote flagged as made up is checked against the full answer. Your results can differ. How we test.