How To Grow Konjac

Written by: Lars Nyman

Growing Konjac

Growing Konjac

Konjac is a type of vegetable native to Eastern and Southeast Asia that is used in traditional Japanese and Chinese cuisine. It has been traditionally used for centuries to make a variety of dishes and is also used for its health benefits, as it contains high amounts of dietary fiber, is low in calories, and contains beneficial components such as glucomannan, an excellent source of prebiotic dietary fiber which helps promote digestion and nutrient absorption. Today, it is commonly used in health and beauty products, including face masks and toothpaste.

Cheatsheet: Growing Konjac

Choose the Right Environment

🌀️ Prefers warm and humid climates

πŸ’§ Requires well-drained soil

🌳 Partial shade is ideal

Planting Konjac

🌱 Plant rhizome sections in spring or fall

πŸ“ Space plants 1 meter apart

🌱 Place in a hole 10 cm deep

πŸ’‘ Ensure tips are pointing upwards

Tending to Konjac

πŸ’§ Water deeply, but avoid overwatering

🌿 Remove weeds regularly

πŸ“… Harvest after 8-10 months

🌱 Replant rhizome sections for next crop

Konjac Benefits

πŸ₯— High in dietary fiber

🌾 Low in calories and carbohydrates

πŸ’ͺ Enhances weight loss efforts

🩸 Helps control blood sugar levels

Extra Tips

πŸƒ Use konjac leaves in cooking

🌻 Promotes self-sufficiency

🌿 Incorporate konjac powder in recipes

✨ Experiment with konjac-based skincare

How to Grow Konjac

Getting started with Konjac

Growing Konjac, also known as Amorphophallus konjac or the Voodoo Lily, is a fascinating endeavor that will add a touch of exotic beauty to your garden. I've had the pleasure of growing Konjac for a few years now, and I'm excited to share my knowledge with you. Here's everything you need to know about successfully growing this unique plant.

Choosing the right location

Konjac loves bright, indirect light, so find a spot in your garden that receives a few hours of sunlight each day. While it can tolerate some shade, too much can inhibit its growth. Keep in mind that Konjac prefers a warm and humid climate - it's not a fan of frost.

Preparing the soil

Konjac thrives in well-draining soil, so it's essential to prepare the planting area accordingly. I recommend adding organic matter, such as compost, to improve drainage and enrich the soil. This will provide the perfect conditions for your Konjac to flourish.

Planting Konjac bulbs

To start growing Konjac, you'll need to plant the bulbs. These fascinating plants can be quite large, so ensure you have enough space. Dig a hole that is two to three times the size of the bulb and place it in the hole, with the pointed end facing upwards. Cover the bulb with soil, firming it gently to remove any air pockets.

Did you know? The Konjac bulb can take several years to reach flowering size, so patience is key when cultivating this extraordinary plant.

Caring for your Konjac

Once planted, it's important to provide your Konjac with regular care to ensure healthy growth. Keep the soil moist but not overly saturated, as waterlogged conditions can be detrimental. Applying a layer of mulch around the plant can help retain moisture and suppress weeds.

Fertilize your Konjac annually in the early spring with a slow-release, balanced fertilizer. This will provide the necessary nutrients for robust growth. Be sure to follow the manufacturer's instructions for dosage and application details.

Protecting your Konjac from pests

While Konjac is relatively pest-resistant, it can occasionally fall victim to snails and slugs. To keep these pesky critters at bay, consider using natural remedies such as beer traps or diatomaceous earth. If the infestation persists, you may need to resort to organic insecticides.

The blooming process

The highlight of growing Konjac is undoubtedly its unique and mesmerizing bloom. The flower, which resembles a large maroon spathe, emits a pungent odor that is often described as resembling rotting meat. But don't let that deter youβ€”the scent is essential for attracting pollinators like flies and beetles.

Fun Fact: The Konjac plant can reach heights of up to 5 feet, making it a real showstopper in the garden.

Harvesting Konjac

If you're interested in using Konjac in cooking or for its medicinal properties, harvesting the corms is a rewarding experience. Wait until the foliage begins to yellow and wither before carefully digging up the corms. Wash them thoroughly and store them in a cool, dry place before use.


Growing Konjac is a delightful adventure that adds a touch of intrigue to any garden. With the right conditions and care, you can marvel at the beauty of its unique bloom and enjoy the benefits of harvesting its corms. So go ahead, embrace the exotic, and let Konjac showcase its charm in your garden.


1. How do I grow konjac?

Plant konjac corms in well-drained soil during the spring.

2. What type of soil does konjac prefer?

Konjac thrives in moist, loamy soil with a pH between 5.5 and 7.5.

3. How often should I water my konjac plants?

Water regularly, keeping the soil moist but not waterlogged.

4. Does konjac require full sun or shade?

Konjac prefers partial shade for optimal growth.

5. Can I grow konjac indoors?

Yes, konjac can be grown indoors in a well-lit area away from direct sunlight.

6. How long does it take konjac to mature?

Konjac takes approximately two to three years to reach maturity.

7. How do I know when konjac is ready for harvest?

Harvest konjac when the leaves turn yellow and the corms are fully formed.

8. Can I propagate konjac?

Yes, konjac can be propagated by planting offsets or cormels.

Konjac is an edible, root-based crop with a variety of uses. It is highly nutritious and packs a powerful punch of fiber, protein, vitamins and minerals. It is also low in calories and fat, and is a great source of fiber, which helps to keep your digestive system running smoothly. Konjac is easy to grow, requiring little maintenance and effort, and yields a large harvest with a variety of uses. With its high nutritional content, versatile uses and easy maintenance, it is an ideal crop to incorporate into your garden.

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