What plant grows in 20 days?
Lettuce and radishes Radishes can be harvested in as little as 20 days, while lettuce provides a steady supply throughout the growing season. Radishes (Raphanus sativus) Truly one of the fastest-growing vegetables to tuck into your garden with a 21-day seed-to-harvest timeline, radishes are a must-try. They are perfect for kids’ gardens because of how quickly they grow.