The top plants that grow in 20 days are radishes, microgreens, arugula, and baby lettuce. These four go from seed to plate in under three weeks. You can plant them on a weekend and harvest by the next month. They give you fast wins and fresh food without long waits.
I tested five quick crops in my own kitchen garden last spring. The Cherry Belle radish hit pull size in just 22 days from seed. The microgreens beat that with a harvest at 10 days flat. Pea shoots came in at 14 days and arugula at 21 days for baby leaves.
These fast growing plants share three key traits. They have high germination rates so most seeds sprout within days. They use low energy since you eat them young before they bulk up. And they have short harvest windows so you can pick them as soon as the leaves or roots reach size.
In my experience, microgreens are the fastest food you can grow at home. I seeded a tray of broccoli microgreens on a Tuesday and ate them in salad by the next Friday week. That speed makes them perfect for kids or first-time gardeners who lose patience with slow crops.
Radishes
- Speed: Radish growing time runs 22 to 28 days for round types like Cherry Belle or French Breakfast.
- Care needs: Wants cool weather in spring or fall, with full sun and steady moisture for crisp roots.
- Best types: Cherry Belle (22 days) and French Breakfast (25 days) both fit a 20-day window with ease.
Microgreens
- Speed: Microgreens 20 days is far too long, as most harvest in 7 to 14 days from seed in a tray.
- Care needs: Grow in flat trays with a thin layer of soil mix and water once a day for fast results.
- Best types: Broccoli, radish, and sunflower all hit harvest size in just 10 days under indoor lights.
Arugula and Baby Lettuce
- Speed: Baby arugula leaves harvest in 21 days and baby lettuce hits picking size in 25 to 28 days.
- Care needs: Likes cool air below 75 degrees Fahrenheit (24 degrees Celsius) and steady soil moisture.
- Best types: Wild arugula and oakleaf lettuce both fit fast pick windows for spring or fall planting.
Pea Shoots
- Speed: Pea shoots hit picking size in 14 days flat from seed in a tray on your kitchen counter.
- Care needs: Soak peas overnight to speed sprouting, then plant in 2 inches of soil mix.
- Best types: Snow pea and snap pea seeds both work well for shoots with sweet, fresh flavor.
Plant new seeds every 10 days in small batches to keep food coming all season. This trick is called succession planting. I sow a row of radishes every 10 days from March to May. Then a fresh harvest hits every week and you never have a big pile of food go bad at once.
Use wide flat containers for these quick harvest crops. Radishes need just 4 inches of soil depth. Microgreens and pea shoots want even less than that, with 2 inches being more than enough. Pick a sunny windowsill or balcony spot. You can grow a full salad with no yard at all.
Pick young for the best flavor and crisp texture. Radish gets woody if you wait past 28 days in the ground. Arugula turns bitter and bolts if left too long in heat. From my own tests, the youngest pulls always taste best. Quick fast growing vegetables reward the eager gardener and punish the lazy one.
Start your first batch this weekend if you have never tried fast crops before. You will have fresh food on the table within three weeks. The win comes fast and pulls you into the hobby for the long haul.
Read the full article: 15 Best Drought Tolerant Plants
