Proper Spacing for Radishes in the Garden

Raphanus sativus or radishes is a popular root vegetable. It is one of the easiest veggies to grow in your garden. Simply sow the seeds in moist healthy soil mix and let them grow and mature. It grows very fast so you can get multiple batches from a single garden bed in a year. There is only one thing that you should worry about and it is the spacing. It is really very important to maintain Proper Spacing for Radishes in the Garden. It is a root vegetable so a little room is essential for healthy root growth. Most radish variety including long as well as round radishes require a minimum 3-inch space around the roots. It is even better if you grow alternate radish plants at a 4 to 6-inch distance.

Proper Spacing for Radishes in the Garden
Proper Spacing for Radishes in the Garden

Check out my previous post: Can you Grow Carrots in Containers?

Can you Plant Radishes too close together?

Yes, Of course, you can plant Radishes too close together. Not all of them will yield optimum size roots yet you can get the leaves for other dishes. I know many of you may disagree with my choice but It’s perfectly right that I like the radish leaves as much as its roots. The green leaves are also great for cooking with spinach.

Ok, If you want healthy thick regular radishes for your salad then you have to give them some space to expand. Although you can do this just by thinking of a few weak seedlings growing in between others. Simply use all those thinned radishes for salad and other dishes. They are as good as any mature radish.

I grow radishes on my terrace garden in containers. Sowing extra seeds help me to harvest green leaves a couple of times before the final root harvest. Meanwhile, I keep thining a few of those every week to allow more room for the bigger ones. I usually harvest nearly 60% of the total radishes before they reach their optimum size. Leaving others to mature to their fullest potential.

Even in this situation, I maintain 3/4-1 inch space between each radish seed at the time of sowing. minimum 1-inch space is essential otherwise you will get neither the roots nor the leaves from your garden. The radish seedlings will become long leggy and fall to die afterward.

What are the drawbacks of sowing radishes close together?

It is true that you can plant or sow radishes close together in a garden. It can help you in getting more foliage along with multiple healthy roots. Although this can cause some problems. It is important to understand as you might have to face one or more of these.

The most common problems that you may face with crowded radishes are-

  • Long leggy seedlings
  • Root rot
  • Leaf Curling
  • Fungal growth
  • Increased pests attack
  • Deformation of the Root structure

These problems are common with crowded radish plants. These plants require a moist environment and the same is ideal for pests and diseases. If your seedlings are too crowded and their roots don’t get enough light or air then they may rot. Also pests like snails, aphids, caterpillars, beetles, mealybugs like this type of environment. These plants may get infected quickly.

The plants may survive pests and diseases with proper care but you can’t prevent root bounding. This will deform the straight radishes. They may break or curl or split into thin sections. None of these are good for your radish garden. Therefore, If you have no prior experience then never plant or sow radishes close together in the garden.

If already done then thin some of them gradually in net few weeks to maintain proper spacing.

Check out: Everything to know about raised garden beds

What is the Proper Spacing for Radishes in the Garden?

Regular long white radishes require a minimum of 3-inch space to grow and expand properly. These radishes can get as long as 20 inches with a 3 or 4-inch diameter. Although not all of them get that big. So 3-inch space is good to grow long white radishes.

You will need at least a 4 to 6 inches gap for purple white round Radishes. These radishes are very popular for salads. They have a mild sweet and spicy taste. on contrary to long radishes they don’t get longer instead round radishes expand in diameter. They require more room to grow than any other radish variety. So you must keep a 4 or 5-inch gap among each round radish seedling.

How to maintain proper Spacing for radishes in the Garden?

Proper Spacing for Radishes in the Garden can be maintained in two different ways. First, you can Sow the radish seeds at appropriate intervals. Next, you can Thin out extra seedlings growing in between others. Sort out weak and leggy seedlings for thining.Rainbow-carrots

Read This: Are Rainbow Carrot Genetically Modified?- Garden facts

Radish Seed Spacing

Sow Radish seeds 1-2 inches apart from each other. Every variety of radish requires a minimum 3-inch gap to develop optimum roots structure. Therefore, If you wanna be precise then sow seeds with 1.5 inches or more space. This spacing will allow the roots to expand up to a radius of 1.5 inches.

Latter thin out a few plants simply by pulling them off the ground. This extra space of 1 inch will add up to the growing root size. So the optimum radish may grow up to 3 to 4 inches wide. If it is a long radish then it will elongate to its full potential i.e. 12 to 15 inches in length.

Though to achieve this you must have to take care of the soil structure for radishes. Every Radish plant needs very soft light and well-drained soil rich in nutrition. It will not yield its best in poor soil conditions.

Therefore, Use a healthy soil mix and sow seeds at least at a 1-inch gap in flat garden beds. Latter thin out extra plants to leave at least 3 or 4-inch space among each radish plant.

Thining weak Radish Seedlings

Most radish seeds start germinating within 5 to 7 days of sowing. you can directly sow these seeds in garden beds at a minimum of 1/2 inch depth.

If you use the grid sowing technique for radishes then it’s fine. This technique includes the creation of several square-foot grids and marking small 4-9 square inch areas within them. You have to sow only 2 Radish seeds in each of these containers. Two seeds are only used to ensure germination in each box. If both germinate then remove anyone or the weaker one. It will result in a maximum of 10 to 15 radish plants in each square foots. All of them will easily grow to their optimum size. You will not require any further thinking with this technique.

Otherwise, if you use the traditional spread sowing technique for radishes in your garden. Then You must thin a few seedlings every week to allow room for the healthier bigger radishes. You will end up with more than 50 seedlings per square foot at the time of germination. Keep reducing their number slowly every week to a maximum of 18 per foot.

We recommend slow thining only to reduce wastage. You should thin or harvest only that many radish plants that you may consume. Fresh Radish harvest is always best for your kitchen, so there is no need to stock them in the fridge.

3-4-inches-is-the-Proper Spacing for Radishes in the Garden
Proper Spacing for Radishes in the Garden: 3 to 4 inches

Also read: How to Grow Pepper Plants in Containers

Why is Thining important for Radishes?

Gradual Thinning is very important for radishes. No matter which sowing technique you use for radishes. You will end up with a little bit crowded garden. Thining is important even if the plants already have sufficient spacing for root growth.

It will help you to –

  • Avoid Long leggy seedlings
  • Reduce Root rot diseases
  • Avoid deformation of roots
  • Control Pest growth
  • Avoid leaf rot
  • Maintain Proper root spacing for better yield.

Crowded radish seedlings always become leggy especially in part shade where the sunlight is not sufficient. Only removing a few plants can help others to expand their leaves. More leaves will also help the plants to receive proper sunlight.

You can maintain proper spacing by thining a few weak radish seedlings. This will also allow sunlight to reach the soil surface helping the roots to warm up properly. This will reduce many problems like fungal root rot and other diseases. It also helps in controlling and avoiding pest attacks on the garden.

What to do with Thinned radishes?

You can cook and eat the thinned radishes. They taste great with fritters, salads, and sandwiches. In tropical regions or countries like India, Bangladesh, or others, people cook thinned radishes with other vegetables and green leaves to prepare a mixed vegetable stew. If you like vegetables and a little bit of spice then this stew can become your favorite.

If you are a spicy fast food lover then chop off these thinned radishes along whit their tender leaves. Also add shallots or onions, garlic, ginger, pepper, salt, cumin, turmeric powder, and a few other spices with corn flor. Make a thick batter out of it. Fry bite-size chunks of this batter for 4-5 minutes in the cooking oil of your choice. It should look golden brown, not light yellow after cooking.

That’s it enjoy this snack with sweet or sour sauce. It is really hard to share this fritter with others, though I know you have to. Give it a try and share your experience with us.

How many Radishes can you get from 1 plant?

Only one, yes you can get only 1 Radish from each plant. Radish is a root vegetable and contains a main taproot that we called radish.  The plant has some other fibrous roots but those are only for plant support. Only the main taproot of a radish plant grows big to store starch and nutrients for the plant. We consume this root so you will get just 1 radish from each radish plant.


Minimum 3 or 4 inches is the Proper Spacing for Radishes in the Garden. What do you think? If you have something interesting to share or ask the let us know in the comments. Keep reading Keep gardening!


Hi, My name is Sukant. I am an I.T professional. Gardening for me is not just a hobby, it's a way of living life with nature. My Ancestors were Commercial farmers: So I personally feel attached to the green. I am not an expert, I'm here only to share my gardening experiences. It's always Refreshing.

Leave a Reply

Your email address will not be published. Required fields are marked *

Recent Posts