How Long Does It Take for Radishes to Grow

Curious about radish growth time? Want to grow your own for tasty salads and more? The answer will interest you for sure.

Usually, radishes are ripe for picking three to five weeks after planting. Imagine, in only a couple of weeks, you'll enjoy the zesty crunch of newly picked radishes. But what about daikon radishes, their bigger, less spicy relatives? How long till they're ready to eat?

Daikon radishes, admired for their size and mild taste, need more time to grow. People often sow them in late summer. This means they are ready to enjoy by late fall. The wait for these nutrition-packed roots is worth it.

After harvesting, daikon radishes can stay fresh for up to two months. This offers a steady supply of their unique flavor.

Knowing how long it takes for radishes to grow helps in planning. Whether you're growing garden or daikon radishes, it's about timing your planting and picking right.

But there's more to learn about growing radishes! We'll check out the ideal conditions, types, how to plant and grow them, taking care of them, the best time to pick, watching for pests and diseases, why planting them regularly is smart, and how to best store and use your harvest.

Ready to start your radish adventure and learn the secrets of growing these joyous veggies? Let's begin and uncover the thrilling radish farming universe.

Best Conditions for Growing Radishes

Radishes love cool weather and can handle the cold well. It's key to give them the perfect conditions for best growth and harvest. Here's what you need to know:

Temperature Requirements

They do great in cooler temps, like 55°F to 75°F (12°C to 24°C). Radishes are cool with light frosts, so they're good for spring and fall. In hotter places, they still grow, but they need some shade when it's hottest.

Soil Preparation

Good soil is vital for radish growth. It should drain well and have a pH of 6 to 7. Mix the soil well to at least six inches down before planting. For longer radishes, go deeper, up to 8 inches. Adding compost or manure boosts soil health and feeds the radishes.

Planting Depth and Spacing

Knowing how deep and far apart to plant is crucial. For spring, plant them shallow, about 1/2 inch. For big and winter kinds, plant 1 inch deep. They should be about 1 inch apart in rows spaced 12 inches. This setup lets the radishes grow well without getting crowded.

Moisture Requirements

Radishes need steady water for growth. About an inch of rain a week is perfect. But if it's dry, give them a deep watering. Just don't overdo it, as too much water harms them. Keep the moisture even to prevent the radishes from cracking or splitting.

Optimal Conditions for Radish Growth
Ideal temperature between 55°F and 75°F (12°C - 24°C)
Tolerant of cold weather, can withstand light frosts
Well-drained soil with pH levels between 6 and 7
Plant seeds 1/2 inch to 1 inch deep, spacing them 1 inch apart in rows 12 inches apart
About one inch of rain per week or thorough watering if rainfall is insufficient

Types of Radishes

Radishes come in many shapes, colors, and sizes. Each type offers a unique flavor and is used in different ways in the kitchen. Let's look at some common varieties.

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Garden Radishes

Garden radishes are common in stores and gardens. They are red, pink, or white and taste spicy. They are great in salads, on sandwiches, or as a quick snack.

Daikon Radishes

Daikon radishes are from Asia, known for their long, white shape. They taste milder than garden radishes and often appear in Asian dishes. They add a nice crunch to salads and are good pickled or in stews.

Winter Radishes

Winter radishes grow bigger and take longer than others. You can harvest them from late fall to spring, making them great for long harvests. Varieties include Black Spanish and China Rose, with a mild flavor.

Oriental Radishes

Oriental radishes vary in size from small to very large. Some can grow as long as 30cm. They have a bit of a kick and are used in Korean and Japanese dishes. You can eat them raw, pickled, or cooked.

winter radishesPin

Planting and Germination

Planting radishes has a few important steps. You can plant radish seeds right in the ground or in pots. It's best to plant them in April through May and again in August for the best results.

Consider the time it takes for radish seeds to grow. They usually start to sprout in about ten days. But, this can change based on how warm the soil is and other conditions.

When the seeds start growing, give them enough space. Small radish types should be about two inches apart. Larger ones need four to six inches between them. This way, they can grow well and not get too close.

Caring for radishes is key to a good harvest. Too much water from rain or sprinklers isn't good for them. And not enough water can make the radishes taste bad and feel tough. Try to water them deeply once a week.

Using mulch helps keep the soil damp and stops weeds. Pick a mulch that's safe for plants, with no harmful chemicals. This will make the soil perfect for your radishes.

For help in planning how to plant your radish seeds, check out the table below:

Radish Variety
Recommended Thinning
Rows Spacing
Smaller Varieties
2 inches between plants
10-12 inches apart
Larger Varieties
4-6 inches between plants
10-12 inches apart

sowing radish seedsPin

Care and Maintenance of Radishes

Radishes need the right care to grow well. To ensure health and growth, water, weed control, and thinning are key.

Watering Radishes

For quick, even root growth, radishes need steady moisture. Give them about 1 inch of water weekly but more in hot spells. Be careful not to overwater to avoid rot and diseases.

Weed Control for Radishes

Weeds can slow down radish growth by taking nutrients and space. Keep your plants healthy by pulling weeds by hand or hoeing. Adding mulch like straw or wood chips helps keep weeds away.

Thinning Radish Seedlings

Thinning means pulling out extra seedlings to give enough space for roots to grow big. Thin radish seedlings when they are 1-2 inches tall. Make sure they are 1-2 inches apart. This helps remaining seedlings get more nutrients and sunlight, growing into tastier radishes.

weed control for radishesPin

Weed Control
Radishes need consistent moisture. Provide about 1 inch of water per week. Increase watering during hot weather to prevent drought stress.
Weeds compete with radishes for nutrients and space. Regularly remove weeds by hand-pulling or using a hoe. Applying organic mulch can help suppress weed growth.
Thin radish seedlings to about 1-2 inches apart when they are 1-2 inches tall. This ensures proper spacing and encourages healthy root development.
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Harvesting Radishes

Radishes are a top pick for many gardeners. They grow fast and are quick to mature. The best time to pick radishes ensures they taste their best and have the right texture. The time it takes a radish to grow depends on the kind and how you care for it.

Garden types, like Cherry Belle, are ready to eat 30 to 45 days from planting. Look for them to be about 1 inch wide to harvest. At this size, they're full of flavor and crunch.

If you're growing long radishes like White Icicle or French Breakfast, wait until they are as wide as your thumb. This means they are at their biggest and best to pick.

Winter radishes take longer, about 50 to 60 days. You can leave these in the ground until the soil freezes. This adds more flavor and a hint of spice to them.

Daikon radishes are perfect for fall and winter dishes. They need up to 50 or 60 days to mature. For these, you might have to wait a bit longer to enjoy them.

Be gentle when picking radishes to keep them intact. Use your hands to pull gently on the leaves for shallow-rooted types. For those with deeper roots, a trowel or garden fork is better.

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After picking, store radishes well to keep them fresh. Put them in a plastic bag in the fridge with a damp towel. They will stay crunchy for up to 6 weeks this way.

Knowing when and how to pick radishes helps ensure a great harvest. Enjoy your radishes at their best, knowing you've managed them well.

Type of Radish
Maturity Period
Harvest Diameter
Garden Radishes (e.g., Cherry Belle)
30-45 days
1 inch
Oblong Radishes (e.g., White Icicle, French Breakfast)
30-45 days
Shoulder diameter same as thumb
Fall-Planted Winter Radishes
50-60 days
Thicker skins, can stay in ground until freeze
Daikon Radishes
50-60 days
Depends on desired size

Common Pests and Diseases of Radishes

Radishes are usually easy to grow and tough against pests and diseases. Yet, there are common problems that can hurt their growth. Knowing about these issues is key to stopping them.


Some pests damage radishes. They are:

  • Flea Beetles: They create small holes in leaves, mostly in early spring.
  • Cabbage Maggots: They tunnel into radish roots, lowering crop quality.
  • Wireworms: These pests cause stunted growth and poor yields by tunneling into roots.

Good garden habits, like cleaning up weeds and old plants, are crucial. Row covers can help keep pests away. These steps lessen pest problems.


Various diseases can also harm radishes. Common ailments include:

  • Alternaria Blight: Warm, moist weather helps this fungal disease spread. It causes dark spots on leaves and stems.
  • Black Rot: A bacterium causes dark, V-shaped lesions on leaves and roots.
  • Clubroot: This soilborne disease deforms roots and slows growth. It can stay in the soil over 10 years.

To fight diseases, rotate crops and keep plants well-spaced. Removing infected plants is crucial. Use disease-resistant radish types when you can.

Controlling Pests and Diseases

To keep pests and diseases in check, use a mix of smart farming, watchfulness, and quick actions. Here are some tips:

  • Keep weeds under control to prevent disease and pest hiding spots.
  • Check plants often for any signs of trouble.
  • Invite helpful bugs that eat pests, like ladybugs and lacewings.
  • Use organic pesticides sparingly with an IPM approach.
  • Have healthy soil and good drainage to fight off diseases.
  • Dispose of sick plants to stop diseases from spreading.
  • Try natural disease fighters, such as biofungicides or home solutions like neem oil.
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By using these methods, you can grow radishes that are healthy and high-yielding.

Tips for Successional Sowing

Want to keep picking fresh radishes all season long? Then, try out successional sowing. This method means you plant little by little. It ensures you always have a supply of fresh radishes.

With successional sowing, your radishes won't all be ready at the same time. This helps prevent too many radishes growing together and going to waste. Plus, it means you can enjoy radishes for more of the year.

Ready to give successional sowing a go? Here are the key steps to follow:

  1. Plan your sowing intervals: Figure out when you want to pick your radishes. Planting every 2-3 weeks is usually good.
  2. Choose the right varieties: Go for radishes that grow fast. Round radishes are a top pick for this method because they develop quickly.
  3. Start with early varieties: Kick off with radishes that mature in four weeks. This way, you'll have radishes early while others keep growing.
  4. Stagger your planting: Plant new seeds a few weeks after the last ones. This keeps the harvests coming without a gap.
  5. Consider your growing space: Think about how many radishes your space can handle. Plant seeds accordingly.
  6. Pay attention to seasonality: Adapt your planting times to fit the length of your season and the type of radish. You can keep sowing through fall for a later harvest.

Successional sowing means a constant supply of radishes. It's a great way to get more out of your garden. Plus, it gives you plenty of homegrown radishes for your meals.

Suggested Planting Schedule for Successional Sowing:

Sowing Date
Harvest Date
April 1
May 1
April 15
May 15
April 30
May 30
May 15
June 15
May 30
June 30

Storing and Using Radishes

Radishes are best fresh, but they can last longer. Just follow these tips. First, cut off the greens and wash the radishes well. This keeps them fresh and tasty.

For short storage, put them in a plastic bag in the fridge. They'll be good for about a week. But, it's best to use them soon to enjoy their peak flavors.

Radishes bring a crunchy, cool kick to salads. That's why they're perfect for summer meals.

Pickled radishes are a tasty treat. They're spicy and tangy, great on sandwiches or in tacos. They add a zesty touch to your food.

For a sweet twist, try roasting radishes. Coat them with olive oil, salt, and pepper. Then, bake until they're soft. You'll love their mild flavor and caramelized surface.

Add radishes to stir-fries for a tasty crunch. Their color and taste light up any Asian dish.


Radishes are great for gardeners at any skill level because they grow quickly. Most types are ready to eat in just a month. They love cooler weather, making them perfect for planting in spring or fall.

For the best results, plant radish seeds just ½ inch deep in soil that drains well and has a pH of 6.0 to 7.0. It's important to space your seeds 1 inch apart, with rows 6 to 12 inches apart. This lets each radish grow healthy and strong.

When your radishes start to sprout, thin them out when they're about an inch tall. This helps them grow better by avoiding overcrowding. Remember to water them regularly and keep weeds away to prevent problems. You can start harvesting in about 3-4 weeks, when the radishes are about 1 inch wide.

There are many types of radishes to try, from the familiar spicy kind to the milder daikon or the bigger winter radishes. Use them in salads, pickles, or stir-fries for a tasty crunch.

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