How To Grow Radishes Indoors? – A Bright Addition To Your Indoor Garden

When the weather is too harsh to grow your favorite edibles outdoors, plan an indoor kitchen garden to keep your pantry loaded with fresh produce! And when thinking of an indoor vegetable patch, don’t forget to plant some radishes! These spicy, sweet, crunchy vegetables take little space, grow incredibly fast, and adapt well to most indoor conditions. Not to mention the beautiful foliage that’s as ornamental as it is edible.

So, ready to grow some indoor radishes? Maybe not just yet. This guide will tell you how to grow radishes indoors before you’re ready to get growing!

How To Grow Radishes Indoors

What Kind Of Plant Radish Is?

This gorgeous root vegetable belongs to the mustard family, Brassicaceae. Radishes may not be a global favorite, but their unique zesty taste has surely earned them a fair share of supporters.

What Health Benefits Does Radishes Have?

If you love radishes, you may also like hearing that they come with plenty of health benefits. Low on calories and with no fat, they make a healthy, crunchy snack to munch on between meals. Additionally, they help digestion, control blood pressure, keep your heart healthy, and are good for the skin.

How To Use Radishes In Cooking?

Apart from the health benefits, its peppery flavor, crunchy texture, and bright skin color make it an excellent addition to many recipes. You can add them to salads, sandwiches, and tacos or serve them next to burgers and steaks. If you manage a decent harvest, they even make great pickles!

Are Radish Leaves Edible?

That’s not all; these versatile plants give edible leaves! Add them to salads, saute them, or turn them into pesto – they’re healthy and tasty, just like the root. Besides all the benefits, radishes take little space to grow and aren’t too fussy about their growing conditions. In short, they have all the qualities to qualify them as edible houseplants.

How To Grow Radishes Indoors?

Growing radishes indoors is easy and quick. You can have fresh, crunchy radishes all year round without even stepping out of the house. Though the technique is pretty straightforward, if you’re trying your luck with an indoor kitchen garden for the first time, we’d recommend that you follow the guidelines.

Can Radishes Be Grown In Pots?

For an indoor garden, you’ll want to choose radishes that don’t grow too long. For small varieties, pots with at least a 6-inch (about 15 cm) depth should be enough to allow room for proper root development. With a rectangular pot that fits on a window sill, you can easily squeeze in many plants apart from each other for a reasonable yield.

How To Plant?

Make sure that the pot has drainage holes at the base. Fill it with good quality, loose potting mix, with a little extra compost, since radishes prefer added nutrients in their soil. Spread the seeds over the surface and poke them slightly, so they’re about ½ inch (about 1,5 cm) deep into the dirt. Sprinkle some more potting soil if the seeds are not fully covered, and spray water until the soil is moist but not soaked.

The Placement

Place the container at a sunny spot, ideally next to a window that gets several hours of sun each day. You can cover the pot with plastic wrap to speed up germination, but remember to remove it as soon as you see sprouts. After removing the plastic wrap, spray water until the soil is moist.

Once the sprouts are a few inches tall, thin them by snipping off the tops until the plants are about 1 to 1.5 inches (about 2,5 to 4 cm) apart. Thinned radish sprouts work great in salads, sandwiches, and soups.

You can continue planting more radishes every few weeks to new containers, so you have something you look forward to once you’ve harvested the first batch. Succession planting ensures a continual harvest, so your pantry is never short on fresh vegetables.

When To Harvest Your Radishes?

Time For A Radish Harvest

In just about 20 to 40 days, your radishes will be mature for harvest! They’ll be ready to be picked once you see their shoulders peeking out under the greens. The “shoulder” should be about an inch (about 2,5 cm) in diameter at the harvest time.

If they’ve taken a month and you still don’t see any mature radishes, gently remove some dirt from under the greens and find the radish top. Or, if it has grown to the right size, pull it out, and if not, push back dirt over it and leave it in for another few days.

What Conditions Does Radish Need To Grow?

So you know all the basics to set up an indoor radish garden, care for it, and harvest fresh radishes at the right time. But that’s not all. You’ll need to provide your vegetable garden with some specific growing conditions to help it thrive. Here’s everything you need to know:

How Much Sunlight Does Radish Need?

Though the weather isn’t a significant consideration when growing plants indoors, your radishes will prefer a sunny spot with 6 to 8 hours of sunlight if you’re growing them in the fall, winters, or spring. Since it’s a cool-season vegetable, radishes will prefer part sun (4 to 5 hours) in summers or regions with a hot climate.

If you find the leaves browning or drooping, your radishes are getting more sunlight than they’d like; move them to a shadier spot. If you’re growing them under grow lights, move them further away from the light source.

Does Radish Need A Lot Of Water?

Unlike other vegetables, for which you allow the soil to dry before watering, radishes will grow best with frequent, deep watering. With radishes, irregular or infrequent watering can result in cracked roots. So, don’t let the soil dry out between waterings, but also avoid overwatering.

Should You Fertilize Your Radishes?

If you’ve planted radishes in a rich potting mix, amended with extra compost, you might not need to fertilize throughout the growing season. Instead of compost, you can also mix in a low-nitrogen, slow-release fertilizer, like 5-10-10, at the time of planting. If your plants still look week once they’re about two weeks old, you can feed them with a diluted dose of liquid fertilizer.

What Radish Varieties Are Excellent For Indoor Growing?

Radishes come in all sorts of colors and shapes. There are spherical ones and elongated, cylindrical ones too. For growing indoors in small containers, choose varieties that develop compact, round bulbs. Here are some of the preferred picks:

1. Perfecto

Crisp and peppery, “perfecto” give beautiful round, red radishes with a golf ball size. They’ll generally take only 25 days to grow to maturity.

2. Ping Pong

Producing perfect round, white radishes with a diameter of around one inch (about 2,5 cm), ping pong has a mild, crunchy flesh, perfect for salads. They’re easy to grow and mature in about 30 days.

3. Cherry Belle

Cherry Belle is the standard round, scarlet radish you find in the produce section at grocery stores. Harvest them in just about 22 days and enjoy the crispy, tangy flavor in salads and soups.

4. Sparkler

It’s another compact, globular variety with a scarlet top half and a white tip. They can be sown thinly and are ready for harvest in just 25 days.

5. Easter Egg

Easter egg offers a colorful mix of round radishes. In about a month, you’ll be harvesting red, purple, pink, and white radishes for a vibrant salad that both kids and adults will love.

What Mistakes To Avoid When You’re Growing Radishes Indoors?

While growing radishes indoors, there are a couple of things that you’ll need to avoid.

  1. Don’t use high-nitrogen fertilizers on your radishes. They’ll promote lush, heavy foliage but will negatively impact the root growth.
  2. Don’t water the foliage. Always direct the hose or watering can tip at the soil when watering the radishes. Wet leaves promote diseases like downy mildew.
  3. Don’t wait too long to pick your radishes. Leaving them in the soil beyond the recommended time will turn them woody, cracked, and bitter.

How To Grow Radishes Indoors? – In A Sealed Package

Temp Required50 To 65°F (About 10 To 18°C)
Sowing TimeAll Year, But Preferably Spring Or Fall
Type Of SoilWell-draining And Loose
Transplanting TimeWhen Seedlings Have Two Sets Of Leaves
Harvesting Time20 To 40 Days
Light Duration6 To 8 Hours
WateringMaintain Even Moisture
FertilizationDiluted Liquid Fertilizer At Mid-season

Final Words

So there it is! Growing tangy, crunchy, sweet radishes indoors is easier than you think! With all the guidelines you have in this post, you’ll finally know how to grow radishes indoors and do that right on your windowsill, for example, all year round.

You can have fresh, homegrown radishes to complement your everyday meals and all that without a garden. And don’t even get me started on those bland, flavorless ones at the grocery stores!

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