Best Way To Grow Radishes



Updated on 10/1/2023
Emma DowneyBy Emma Downey
Gardening Expert
Learn More about Emma Downey

Radishes: Sowing, Cultivating, and Gathering Their Fruits

Radishes are resilient root vegetables that are grown for crisp, colorful, and spicy roots. Radishes can be eaten raw or cooked. They can be planted more than once in a season, and they can be harvested in as little as three weeks after the initial planting. Find out how to cultivate radishes and recognize when they have reached their full potential.

Concerning Radishes



Radishes are a type of annual root vegetable that belongs to the Brassicaceae family, also known as the cabbage family. Other members of this family include broccoli, cabbage, cauliflower, kale, collards, and horseradish, as the name suggests. The entire plant, from the roots to the leaves, can be eaten either raw or cooked, depending on your preference. (For further notes on cooking, see below.)

Planting seeds can take place in the spring as well as in the fall, but sowing should be put on hold when temperatures reach 70 degrees or higher. Warm temperatures cause radishes to bolt, which renders them virtually useless. Aside from that, growing radishes are among the simplest tasks involved in cultivating vegetables.

Radishes reach maturity at such a rapid rate that they may be planted virtually anywhere there is an empty space, or they can be planted in the spaces between rows of other crops like carrots or beets. Radishes are not only delicious, but they also make great companion plants that can help keep pests away from other types of veggies.




You should select a location that has a minimum of six hours of sunlight per day. Radishes will devote all of their energy to growing larger leaves if they are planted in an environment with an excessive amount of shade or even if they are planted near other vegetable plants that cast shade on them. Turn over the dirt, as roots do not grow as well in soil that has been compacted, and remove any pebbles you find. If the soil is clay, the addition of organic matter will help to enhance drainage and loosen it up. You should till the soil to a depth of 8 inches if you plan on planting longer varieties, such as "White Icicle."

When Should Radishes Be Planted?

  • Planting seeds for a spring crop should be done four to six weeks before the last spring frost.
  • Planting seeds for a harvest in the fall should be done four to six weeks before the first frost of the season.

How to Get Radishes to Grow

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  • Before you start sowing, work organic matter into the soil, but stay away from fresh manure and fertilizers that are high in nitrogen. A soil that is too rich will promote the growth of luxuriant foliage at the expense of radish roots.
  • The storage life of radish seeds is relatively lengthy. It is perfectly fine to grow radish seeds that are anywhere from one to five years old. It's possible that not all of them will germinate, but you'll have plenty that does.
  • Plant the seeds in the ground outside about half an inch deep, and then lightly cover them with soil. Place items in rows that are 1 inch apart and 12 inches apart overall. Give the seeds a good soaking of water to a depth of around 15 centimeters.
  • Radishes can be harvested continuously throughout the late spring and early summer if additional seeds are planted approximately once every ten days when the weather is still on the cold side.


Radishes After Thinning

Growing Radishes

In the process of producing radishes, "thinning" is likely the single most crucial step. It is crucial to thin radishes to three-inch spacings once the seedlings are around a week old and have reached a height of two inches. Radishes that are overcrowded do not grow as well, and the roots that result from this will be tiny, shriveled, and inedible.

To thin, simply take a pair of scissors and clip the greens at the soil line. The trimmings are edible, so feel free to use them in a salad. Or, if the cuttings from the thinning have been carefully removed while preserving the roots, leaves, and stem, you can replant them. Although transplants may be experiencing some stress, they should be able to recover.

Radishes are being given moisture.



  • The most important thing is to maintain an even and consistent moisture level. You don't want it to get too dry, or the roots will become stringy and aromatic. On the other hand, you don't want it to get too wet, or the roots will rot. A drip irrigation system is an excellent choice for accomplishing this goal.
  • Radishes should be mulched with compost that has been supplemented with wood ashes to assist retain moisture when conditions are dry and to prevent root maggots from infesting the crop.

Be sure to pull weeds frequently; else, radishes will be smothered in no time.

Radishes can be harvested in both the "spring" and "winter" seasons. Note that the shorter, rounder kinds have a lower heat tolerance than the longer, more elongated forms; hence, you should plant the shorter, rounder types first in the early spring, before the larger ones. Radishes of a smaller size tend to have a more subdued flavor, but those of a greater size tend to have a more robust kick.



  • "Burpee White" is a spring variety; it is a little kind; it is an heirloom radish; its flesh is white and crisp, and its flavor is modest.
  • "Champion" is a spring variety; it is of the tiny kind; it is bright scarlet with firm, crisp white flesh; and it has a flavor that is not overpowering.
  • "Cherry Belle" is a miniature variety that is spherical, red, and has white flesh. It is an heirloom radish and has a flavor that is crisp and mild.
  • "German Giant" is a spring variety that is the size of a baseball and is red. It is sweet and gentle, and it never gets too hot.
  • 'French Breakfast' is a spring variety that matures late and can withstand moderate heat; it is an heirloom radish with red roots that are 3 inches long, an oblong form, and a mild flavor.
  • The heirloom variety, known as "White Icicle," has white cylindrical roots that can grow up to five inches in length, mature in late spring, are heat tolerant, and have a flavor that is sweet with a tinge of pepperiness.
  • "Daikon" is a winter radish, and it may grow up to 14 inches long. It thrives in chilly climes or towards the end of the growing season when temperatures are lower. It has a sharp and snappy taste.
  • "Spanish Black" is a winter radish with huge turnip-shaped globes about 3 to 4 inches in diameter that have crisp, pungent, and spicy pure-white flesh and are excellent for preservation.
  • "Watermelon" is a winter radish with a moderate flavor and a light peppery tang. It is an heirloom variety of the Daikon radish and has beautiful white skin and vivid red inners.


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If gardeners leave spring radishes in the ground after they have reached maturity, the radishes will become tough and taste starchy. This is the most common mistake that gardeners make with spring radishes. In contrast, winter radishes can be left in the ground after reaching maturity for up to a few weeks longer if the temperature remains below freezing. Complete the crop before the frost sets in.

  • Check the instructions on your seed packet before you harvest! There is a wide range of maturation times throughout the spectrum of radish varieties. When the roots of certain types reach a diameter of about an inch and a half, harvesting can begin as early as three weeks after planting. Take one out as a demonstration.
  • The fact that the green growth that is visible above the soil is between 6 and 8 inches tall is yet another positive indicator that your radish root is doing well.
  • At this point, you should be able to see or feel the "shoulder" or upper section of the radish pushing up against the top soil layer.

In the event that some of the radishes bolt before you have the opportunity to harvest them, you should let a few of them mature into seedpods. The seedpods, which have the appearance of miniature bean or pea pods, can be used to make a salad that is rather good.

How Radishes Should Be Kept

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  • After cutting off the tops and the thin root tail, washing and thoroughly drying the radishes is the next step. Place in the crisper drawer of the refrigerator using produce bags or bags with zip-top closures.
  • The radishes' accompanying greens can be kept separate for up to three days. Place each one in its own produce bag along with a piece of dry paper towel.


Radishes' juice should be consumed carefully in order to treat hoarseness. treatment from the 18th century

Got a mosquito bite? Applying the juice of radish will relieve both the sting and the itching.


Pests and diseases that affect radishes



Pest/DiseaseType Symptoms Control/Prevention
cabbage roots maggotsInsectsplants that are stunted or wilted, with discolored leaves and larvae feeding on the rootsCollars should be placed around the stems of seedlings, adults should be monitored with yellow sticky traps, row coverings should be utilized, crop residue should be removed, the soil should be tilled in the fall, and crop rotation should be practiced.
cabbage wormsInsects

Leaves are skeletonized or have big, ragged holes in them; heads are boring; dark green excrement is present; yellowish eggs are placed singly on the undersides of leaves.


Handpicking, using row covers, and adding native plants to attract good bugs are all good ideas. cultivate companion plants, and thyme in particular; Bacillus thuringiensis should be sprayed (a bacteria that affects larvae and grubs)


Clubroot Fungusplants that are stunted and wilted, with yellow leaves and roots that appear bloated and deformedEliminate sick plants, solarize the soil, keep the pH of the soil at roughly 7.2, disinfect the tools, and rotate the crops.
flea beetlesInsectsa great number of very small holes were found in the leafUtilize row covers, mulch extensively, and add native plants to your garden in order to encourage helpful insects.
White rustFungusBlisters that mostly chalk white and found on the undersides of the leaves; tiny spots or blisters that are yellow-green and occasionally arranged in a circular pattern on the top leaf surfaces; a possibility of galls or deformation; Infection might also occur in the stems.Eliminate contaminated plants, select resistant kinds, remove weeds, clean up crop leftovers, and rotate plantings.






There are a lot of people who are unaware that radishes have purposes that extend far beyond their appearance on salads. Radishes are an excellent addition to a harvest of carrots and are also delicious when fermented into kimchi. The smaller varieties can be nibbled on in their entirety (using the green tops of the fruit as grips) and dipped into salted butter and lime juice for flavor. Radishes can, of course, be grated and added to cabbage slaws in order to impart some of their distinctive flavors.

Radishes can also be prepared by cooking them. Radishes that have been cut in half can be roasted until they are buttery and soft. In addition, the leafy green tops can be cooked in olive oil with garlic or even ground into a pesto using a food processor.