Comfrey: The Best Kept Secret in Gardening!

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Looking for a versatile and low-maintenance plant for your garden? Look no further than comfrey! Easy to grow and full of beneficial properties, this herb has been prized for centuries for its medicinal uses, as well as its ability to enhance soil health and promote biodiversity. In this complete guide to growing comfrey, we’ll show you everything you need to know to cultivate this powerhouse plant and reap its many benefits. So let’s get started!

Benefits of Growing Your Own Comfrey

  • Comfrey is a nutrient-rich plant that can be used as organic fertilizer for your garden.
  • It has medicinal properties and can be used to reduce inflammation, pain, and swelling.
  • Comfrey can be used to make a natural homemade insecticide.
  • Comfrey can attract pollinators to your garden.
  • This plant is easy to grow and can tolerate different soil conditions.

General Information About Comfrey

Plant Family: Borage family (Boraginaceae)
Plant Latin Name: Symphytum officinale

Plant Variations Available

Comfrey, also known as Symphytum Officinale, is a herbaceous perennial plant that has been used for medicinal purposes for centuries. It is native to Europe and Asia, but has since spread throughout the world due to its beneficial properties.


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There are several variations of comfrey, each with their own unique characteristics and uses. One of the most common variations is the Russian comfrey (Symphytum x uplandicum). This particular type of comfrey is known for its deep roots, which can reach down to 10 feet in length. It is commonly used as a fertilizer, as the deep roots help to bring up nutrients from the soil.

Another variation of comfrey is the prickly comfrey (Symphytum asperum). This type of comfrey is known for its spiky leaves and hairy stems. It is often used to treat minor cuts and bruises, as well as other minor skin irritations.

The common comfrey (Symphytum officinale) is another variation of comfrey that is popularly used in herbal medicine. This type of comfrey is known for its vibrant purple flowers, and is often used to treat joint pain, bruises, and other injuries. However, due to its high levels of pyrrolizidine alkaloids (PA), it is advised to use this variation of comfrey only externally and not to consume it internally.

Overall, comfrey is an incredibly versatile herb that can be used for a wide range of purposes. From fertilizer to herbal medicine, there are several variations of comfrey that can help in different areas of life.

Germinating Comfrey

Preferred Zones

Comfrey is a perennial herb that is revered for its healing properties and commonly used in traditional medicine. With its highly adaptable nature, it can grow in a wide range of conditions. However, it thrives in moist environments and rich, fertile soil.


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The best zones for outdoor growing of comfrey are USDA zones 4 through 9. These zones provide the ideal climatic conditions for the herb with adequate rainfall, mild winters, and warm summers.

Comfrey grows best in full sun but can tolerate partial shade. It’s essential to ensure that the herb receives enough sun during the day, especially in colder areas. Plant comfrey in well-draining soil that is rich in organic matter, slightly acidic with a pH of 6.0 to 7.5.

Comfrey doesn’t require a lot of attention and is relatively low maintenance once established. However, it is critical to keep the soil moist to encourage healthy growth. Fertilizing is also necessary for an optimal yield, and organic fertilizers like compost and aged manure work best.

In conclusion, comfrey is a versatile herb that can be grown in a wide range of conditions. Nevertheless, it grows best in USDA zones 4 through 9, with moist soil and the right amount of sunlight. With a little bit of care and attention, you can grow comfrey successfully and enjoy its many health benefits.

Sowing Instructions

Comfrey is a hardy and versatile herb that can be sown both indoors and outdoors, depending on the time of year and your climate. Here are some tips for sowing comfrey seeds:

1. Choose a location – Comfrey prefers rich, moist, well-drained soil. Choose a location that gets partial to full sun.

2. Soil preparation – Comfrey does best in soil with a pH of between 6.0 and 7.0. To prepare your soil, remove any weeds and rocks, and work in plenty of organic matter like compost or aged manure.

3. Sowing – Comfrey seeds are very small, so it’s best to sow them thinly and spread them evenly over the soil surface. Gently press the seeds into the soil, but don’t bury them too deeply. Water the soil thoroughly.

4. Germination – Comfrey seeds typically germinate within 7-14 days. Keep the soil moist but not waterlogged, and protect the seedlings from harsh sun or wind.

5. Transplanting – When the comfrey seedlings are large enough to handle, usually after about 6-8 weeks, they can be transplanted to their permanent location. It’s best to sow comfrey seeds in containers or compost piles before transplanting them into the garden.

6. Care and maintenance – Comfrey is a low-maintenance plant that doesn’t require much care once it’s established. Water regularly, especially during dry spells, and fertilize with a balanced organic fertilizer. Harvest comfrey leaves when they’re young and tender, but avoid taking more than one-third of the plant at a time to prevent damaging the root system.

By following these simple steps, you can successfully sow and grow comfrey in your garden. Good luck and happy gardening!

Preparation Advice

Comfrey is a wonderful plant that is easy to grow and can provide a variety of benefits to your garden. If you’re considering growing comfrey, there are some important things to keep in mind to ensure a successful harvest.

First and foremost, you’ll need to select the right location for your comfrey plants. They prefer full sun and well-drained soil, so look for a spot that gets plenty of direct sunlight and has good drainage. You can also choose to grow comfrey in containers if you don’t have the space for an outdoor garden.


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When it comes to equipment, you’ll need a few basic things to get started. A good quality spade or shovel and garden fork are essential for preparing your soil and planting your comfrey. You’ll also need a watering can or hose to keep your plants hydrated throughout the growing season.

One of the best things about comfrey is its ability to accumulate nutrients from the soil, which makes it an excellent fertilizer for other plants in your garden. To take advantage of this, many gardeners like to use a compost bin to create a nutrient-rich soil amendment that can be applied to other plants in the garden. In addition to a compost bin, you may also want to invest in a good quality soil test kit to monitor the nutrient levels in your soil.

For those who are interested in harvesting comfrey for medicinal purposes, there are a few additional things you’ll need. A good quality dehydrator is essential for drying your comfrey leaves, which can then be used to make teas or other herbal remedies. You’ll also need a mortar and pestle or herb grinder to grind the dried leaves.

Overall, growing comfrey is a fun and rewarding experience that doesn’t require a lot of special equipment. With the right tools and a little bit of know-how, you can enjoy a bountiful harvest of this wonderful plant in no time!

Germination Tools and Equipment

When it comes to germinating comfrey, having the right tools and equipment can make a huge difference in the health and success of your plants. Here are some of the best tools and equipment for ensuring that your comfrey germinates healthy and robust:

1. Comfrey Seeds – Of course, the first thing you need to germinate comfrey plants is high-quality, organic comfrey seeds. You can purchase these seeds online, at a local nursery or gardening store, or even harvest them yourself from existing comfrey plants.

2. Soil – Comfrey grows best in rich, moist soil. It is recommended to use a high-quality potting mix, or to amend your garden soil with organic compost or worm castings to provide the plant with ample nutrients.


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3. Pots or Trays – Choose containers with enough space for the comfrey seeds to grow, but not so large that they will be overwhelmed with soil. Seed trays or pots with drainage holes are ideal for keeping soil moist without becoming waterlogged.

4. Watering Can – Comfrey seeds require ample moisture to germinate, so a watering can with a fine spray nozzle will help you distribute water evenly and gently.

5. Heat Mat – Comfrey seeds germinate best in warm temperatures, around 68-75°F. A heat mat can provide the necessary warmth for seeds to sprout quickly and evenly.

6. Grow Lights – Comfrey seeds require plenty of sunlight to grow and thrive. If you don’t have access to natural light, consider investing in grow lights to simulate bright, sunny conditions for your seedlings.


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With these tools and equipment, you’ll be well on your way to germinating healthy and vibrant comfrey plants in no time! Remember to keep your soil moist, warm, and well-lit, and your comfrey will reward you with its many wonderful health benefits.

Growing Comfrey

Light Requirements

Comfrey is a hardy, fast-growing herb that is a great addition to any garden. In order to grow healthy comfrey plants, it is important to provide them with the right amount of light.

Comfrey plants thrive in full sun to partial shade, meaning they need at least 6 hours of direct sunlight per day to grow and develop properly. If you are planting your comfrey in an area that receives less sunlight, you can supplement their natural light with artificial grow lights.

In addition to providing enough light, it is important to make sure that your comfrey plants are receiving the right amount of water, nutrients, and soil pH levels. Comfrey plants prefer well-drained soil with a pH range between 6.0 and 7.0. It is also important to avoid overwatering your comfrey, as this can lead to root rot and other fungal diseases.

Overall, growing healthy comfrey plants requires the right balance of light, water, nutrients, and soil pH levels. With a little attention and care, you can enjoy a bountiful harvest of this versatile herb.

Temperature Requirements

Comfrey is a hardy and resilient plant that can grow in a variety of conditions. However, for optimal growth and health, certain temperature requirements must be met.

Comfrey prefers to grow in temperatures between 60-85°F. Temperatures below 50°F can cause damage to the plant, while temperatures above 90°F can cause the plant to wilt and become stressed.

During the winter months, it is important to protect comfrey from frost and freezing temperatures. You can do this by providing a layer of mulch or moving the plant indoors.

When growing comfrey indoors, it is important to provide proper ventilation and avoid placing the plant in direct sunlight, as this can cause the temperature to rise too high.


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Overall, comfrey is a hardy plant that can tolerate a range of temperatures, but providing optimal growing conditions will promote healthy growth and a bountiful harvest.

My Favorite Tools For Growing Comfrey

If you’re looking for a natural solution to keep your garden healthy, comfrey is an excellent option. However, to make the most of this miracle plant, you’ll need the right tools and equipment.

First and foremost, you’ll need a comfrey plant or seeds. You can easily find these online or at a local nursery. Comfrey is hardy and can grow in many conditions, but it thrives in well-draining soil and full sun or partial shade.

Once you have your comfrey, you’ll want to harvest the leaves periodically. This is where the right tools come in handy. A sharp pair of pruning shears can make quick work of snipping off the leaves. Be sure to only take what you need, leaving enough foliage for the plant to continue thriving.

Comfrey leaves are full of nutrients and minerals that are beneficial for plants. So, if you’re using comfrey for mulching or as a natural fertilizer, a compost bin or pit is a must-have. The comfrey leaves will break down into rich, nutrient-dense compost that can help promote plant growth and health.

Another tool that can come in handy when working with comfrey is a juice extractor. Comfrey juice is an excellent source of calcium, phosphorus, and potassium, and it can be used as a natural plant food. With a juice extractor, you can extract the nutrients from the comfrey leaves and use them as a foliar spray or directly apply them to the soil.

In summary, to care for and maintain healthy comfrey, you’ll need:


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– Comfrey plant or seeds
– Pruning shears
– Compost bin or pit
– Juice extractor (optional)

With these tools and equipment, you’ll be on your way to growing healthy comfrey and promoting a thriving garden.

Preferred Soil Type

Comfrey is a plant that may not be as well-known as some other gardening staples, but it can be an incredibly valuable addition to any garden. And just like any other plant, it has specific soil requirements for growing healthy and strong. Here’s what you need to know about soil when growing comfrey.

First and foremost, comfrey thrives in fertile soil. It prefers a soil that is rich in nutrients and organic matter. If your garden soil is lacking in nutrients, consider amending it with compost or well-rotted manure. This will give your comfrey plants the boost they need to grow healthy and strong.

Comfrey also likes soil that is well-draining. It doesn’t like to sit in water or have its roots constantly wet. If your soil is heavy or has poor drainage, you may want to consider planting comfrey in raised beds or containers filled with a well-draining potting mix.


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One thing to keep in mind is that comfrey is known for deep roots, which means it can access nutrients from deeper in the soil. Because of this, it’s a good idea to loosen the soil to a considerable depth before planting to give comfrey access to all the nutrients it needs.

Another thing to consider is pH levels. Comfrey prefers slightly alkaline soil with a pH between 6.0 and 7.0. You can test your soil’s pH levels with a soil test kit, which you can find at most garden centers or home improvement stores. If your soil is too acidic, you can raise the pH by adding lime or wood ash.

Overall, growing healthy comfrey starts with good soil. Make sure your soil is fertile, well-draining, and has the right pH levels, and your comfrey plants will thrive. Happy gardening!

Watering Requirements

Comfrey is a plant that thrives in moist soil conditions, making it a water-loving species. Watering is a key factor in growing healthy comfrey plants, and it is important to keep the soil consistently moist without overwatering.

During the growing season, comfrey requires regular watering to keep the soil damp, but not waterlogged. The frequency of watering will depend on the specific growing conditions, such as the temperature, humidity, and amount of rainfall. Typically, comfrey plants should be watered every three to four days during warm weather, but if the conditions are particularly hot and dry, more frequent watering may be necessary.

It’s important to note that comfrey plants can tolerate short periods of drought, so don’t panic if you accidentally miss a watering session. However, prolonged dry periods can cause the plants to go dormant or die back.

When watering comfrey plants, it is best to aim for direct soil application rather than watering from above. This will help prevent water from accumulating on the leaves and stems, which can lead to fungal diseases. Using a soaker hose or a drip irrigation system is an efficient way to water comfrey plants without causing soil erosion or damaging the plant.

In summary, to grow healthy comfrey plants, make sure to keep the soil consistently moist without overwatering. Water on a regular schedule during the growing season, but adjust the frequency based on weather conditions. Aim for direct soil application when watering and avoid getting the leaves and stems wet. With proper watering, your comfrey plants will flourish and provide you with a bountiful harvest.

What You Need To Know About Fertilizing Comfrey

Comfrey is a popular herb used for a variety of purposes, from relieving pain to promoting healthy skin. If you’re looking to grow comfrey at home, it’s important to understand its fertilizing requirements to ensure good health and maximum yield.

Comfrey is a heavy feeder and requires a well-balanced fertilizer to thrive. Start by working compost or well-rotted manure into the soil before planting to provide a nutrient-rich foundation. After planting, apply a balanced fertilizer with an N-P-K ratio of 10-10-10 or 5-10-5 every three to four weeks during the growing season.

If you’re looking to optimize comfrey’s production of nitrogen, which is one of its key nutrients, consider using a fertilizer with higher nitrogen content, such as a 21-0-0 blend. This will help promote leafy growth and increase the plant’s overall nitrogen levels.


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Aside from regular fertilizing, comfrey also benefits from periodic applications of liquid seaweed or fish emulsion, which provide additional trace elements and micronutrients to improve overall health and vigor.

Remember, over-fertilizing can be just as harmful as under-fertilizing, so be sure to follow package directions carefully and avoid applying too much fertilizer at once. By providing adequate nutrition through proper fertilization, you’ll enjoy a bountiful harvest of healthy and delicious comfrey.

My Favorite Fertilizers For Comfrey

Comfrey is an excellent source of natural fertilizer, rich in nutrients that promote healthy growth in plants. Comfrey leaves are particularly high in potassium, nitrogen, and phosphorus, which are essential for leaf and stem development, root growth, and overall plant health.

One of the best ways to use comfrey as a fertilizer is by making a comfrey tea. This involves cutting up comfrey leaves and steeping them in water for several days until a dark, rich liquid is formed. This liquid can then be diluted with water and poured over plants to provide a nutrient boost.

Comfrey can also be used directly as a mulch around plants, where it will slowly break down and release nutrients into the soil. Alternatively, dried comfrey leaves can be used as a slow-release fertilizer by sprinkling them around the base of plants.

While comfrey is a great fertilizer, it is important to remember that it should be used in moderation. Too much comfrey can lead to an imbalance of nutrients in the soil and may even be harmful to some plants. As with all fertilizers, it is best to do a soil test before application and follow recommended guidelines for usage.

Harvesting Comfrey

Time To Maturity

Comfrey is a herbaceous plant that is widely cultivated for its medicinal properties and ornamental value. It is native to Europe and Asia and can grow up to 2-3 feet in height. Comfrey is a fast-growing plant that can take anything from three to five years to grow from sprouting to maturity.

When comfrey is grown from seed, it can take up to two years to establish itself and produce flowers. However, when grown from cuttings, comfrey can mature in as little as two years.

The maturation period of comfrey depends on various factors such as the growing conditions, climate, soil quality, and plant variety. Comfrey prefers moist and fertile soil, and it grows best in areas with a cool to temperate climate. The plant also requires plenty of sunlight to thrive.

Comfrey has two stages of growth: vegetative and reproductive. The vegetative stage lasts for about three months, during which the plant focuses on developing its leaves and root system. The reproductive stage starts after the vegetative stage, and the plant begins to flower and set seed.

In summary, comfrey is a fast-growing plant that can take between three to five years to mature. To ensure healthy growth, it is essential to provide the plant with the right growing conditions and to be patient as it goes through its various stages of development.

Harvest Instructions

Comfrey is a medicinal herb that has been used for centuries to treat a variety of ailments. This herb is relatively easy to grow and harvest, making it a popular choice for herbalists and gardeners alike.

To harvest comfrey, you will need a pair of sharp scissors or pruners and a container to collect the leaves. Here is a step-by-step procedure on how to harvest comfrey:

1. Wait until the comfrey plant has reached maturity. Most experts recommend waiting until the plant has reached a height of at least two feet before harvesting.

2. Choose a dry day for harvesting. Wet leaves can increase the risk of mold or disease, so it’s best to harvest on a dry day.

3. Begin by cutting the outer leaves of the plant. These are the older leaves and are typically located at the bottom of the stem.

4. Use your scissors to cut the leaves at the base of the stem. Try to leave about an inch of stem intact to help the plant regrow quickly.

5. Move up the stem, cutting the outer leaves until you reach the top.

6. After you have harvested the outer leaves, you can move on to the inner leaves. These leaves are younger and more tender, making them ideal for use in teas and other remedies.


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7. Continue cutting the leaves from the top of the plant down, being careful not to damage the stem or any of the remaining leaves.

8. Once you have harvested all the leaves, place them in a container and store them in a cool, dry place until you are ready to use them.

Comfrey can be used in a variety of ways, including making teas, tinctures, and oils. This versatile herb is prized for its ability to soothe inflammation, promote healing, and ease pain. By harvesting comfrey from your garden, you can enjoy the many benefits of this powerful herb.

My Favorite Tools For Harvest Time

Comfrey is a versatile and highly beneficial herb that is used for a variety of purposes. Whether you are using it for medicinal purposes, as a natural fertilizer, or as a companion plant in your garden, it is important to have the right tools and equipment for harvesting it. Here are some of the best tools you will need for harvesting comfrey.

1. Gloves – Comfrey has rough, hairy leaves that can irritate the skin, so a good pair of gardening gloves is essential.

2. Pruning shears – You’ll want a sharp pair of pruning shears to cut the large stalks of comfrey. Make sure they are strong enough to handle the thicker stems of mature plants.

3. Hand-held sickle – This tool is ideal for cutting comfrey stems close to the ground. It’s also great for clearing large areas of land quickly.

4. Harvesting knife – A sharp, serrated knife is perfect for harvesting comfrey roots. It will allow you to cut through the tough, fibrous roots easily.

5. A container or bag – Comfrey can produce a lot of green waste, so you will need a container or bag to collect the leaves, stalks, and roots. Consider using a compostable bag to reduce your environmental impact.

By using these tools, you’ll be able to harvest your comfrey quickly and easily, ensuring that you get the most out of this wonderful herb. Whether you’re using it for medicinal purposes or to improve the health of your garden, harvesting comfrey is easy with the right tools.

End of Season & Overwintering

Comfrey is a versatile, low-maintenance plant that gardeners and herbalists alike adore. With its lush foliage and strong roots, it can thrive in a variety of growing conditions and is also known for its healing properties.

When it comes to overwintering, Comfrey requires minimal care. As a perennial plant, it will come back year after year, but like most plants, it will need some attention before the winter freeze sets in.

To prepare your Comfrey for the winter, start by performing a thorough clean-up of the foliage. Remove any dead or decaying leaves, and trim back any larger or unruly branches. This will help to prevent the build-up of mold or disease during the colder months.

Next, you may want to consider mulching around the base of the plant. This can provide insulation and protection from harsh weather conditions. A layer of straw, leaves, or wood chips can do wonders to prevent the ground from freezing and thawing too rapidly, which can damage Comfrey’s sensitive roots.

Lastly, it’s important to water your Comfrey regularly, especially during the fall months when the weather can be unpredictable. This will help the plant to store up the essential nutrients it needs to survive the winter.

Overall, Comfrey is a hardy plant that can handle most conditions with ease. With just a little bit of care and attention, your Comfrey should make it through the winter and emerge stronger and healthier in the spring.

Final Thoughts on Comfrey

Congratulations! You are now equipped with the knowledge you need to successfully germinate, grow, and harvest Comfrey. Remember, Comfrey is a resilient and hardy plant that boasts a multitude of benefits for both gardeners and the environment. Whether you are growing it for medicinal purposes, as a green manure, or simply because you enjoy its beauty, Comfrey is a valuable addition to any garden. With proper care and attention, your Comfrey plants will thrive and provide you with an abundance of leaves and flowers year after year. So why not give it a try and see for yourself just how easy and rewarding growing Comfrey can be? Happy planting!

Frequently Asked Questions About Growing Comfrey

Q: What is comfrey and why is it beneficial for gardening?
A: Comfrey is a perennial herb that is native to Europe, but is commonly used in gardens worldwide. It is known for its ability to accumulate nutrients from the soil and transfer them to other plants, making it an ideal compost addition or used as a nitrogen-rich fertilizer. It also has medicinal properties for humans and animals.

Q: Can comfrey be grown in containers or does it need to be planted in the ground?
A: Yes, comfrey can be successfully grown in containers, but it may require additional watering as the roots cannot extend as deeply to find moisture. However, it is important to note that comfrey has deep roots and prefers a deep planting depth, so a large container is recommended.

Q: How do I propagate comfrey and how long does it take to grow from seed or cutting?
A: Comfrey can be propagated through root cuttings, stem cuttings, or division. Root cuttings are the easiest and most common method, which involves digging up a mature plant and severing the root into sections. Plant the root cuttings horizontally in a prepared bed, and they will sprout within two weeks. Alternatively, stem cuttings can be taken and rooted in water, then transplanted. Comfrey can take up to three months to grow from seed, but it is not typically grown this way as root or stem cuttings are faster and more reliable.

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