By Umar Nsubuga
Radishes, known for their crisp texture and peppery taste, are one of the easiest and fastest crops to grow.
Joseph Bukenya, a vegetable farmer says whether you are a seasoned farmer or a beginner gardener, cultivating radishes can bring quick and rewarding results.
According to Bukenya, the first step in growing radishes is selecting the right variety for your needs. There are many types, from the small, round, red globe radish to the longer, white daikon radish.
Gideon Zakke, an agronomist says soil preparation is very important, radishes prefer loose, well-drained soil with a pH between 6.0 and 7.0.
He says it’s essential to prepare the soil before planting.
“Work the soil deeply, breaking up any clods to allow the roots to grow without obstruction. Adding compost or organic matter enhances the soil structure, ensuring good drainage while also providing the nutrients radishes need to thrive,” he says.
When the radishes are planted, remember they are cool-weather crops, so it’s best to plant them when temperatures are moderate.
Zakke says sow the seeds directly into the garden bed, about half an inch deep, with spacing of one to two inches between each seed. The rows should be spaced about 12 inches apart. After covering the seeds lightly with soil, water them gently but thoroughly.
Watering and Care
“Radishes need consistent moisture to develop properly, but over-watering can cause the roots to crack. Aim to keep the soil evenly moist, particularly during dry spells,” explains Zakke.
Zakke says thinning is also important, once the seedlings emerge, thin them out to leave about two to three inches between each plant. This ensures that the roots have enough space to grow to their full size.
Fertilising
According to Zakke, radishes don’t require much fertilisation, especially if the soil is rich in organic matter. However, if the soil lacks nutrients, a balanced fertiliser can be applied before planting. Be careful not to over-fertilise with nitrogen, as this can result in lush foliage at the expense of the root development.
Pest and disease control
He explains that though radishes grow quickly and are not prone to many issues, they can be affected by pests such as flea beetles and root maggots.
Using row covers can help protect the plants from these pests. Ensure that the plants are spaced adequately to avoid fungal diseases caused by overcrowding and poor air circulation.
Harvesting
The beauty of radishes lies in their speed. Zakke says most varieties are ready for harvest in just three to four weeks.
He adds that harvesting radishes at the right time is key, as leaving them in the ground too long can result in a woody texture.
“Gently pull them from the soil once they reach the desired size, usually around one inch in diameter,” he says.
Storage and use
Zakke says that once harvested, radishes can be used fresh in salads or as a crunchy snack. For longer storage, remove the greens, as they draw moisture from the root. Place the radishes in the refrigerator, where they will stay fresh for up to two weeks.
