Volunteer Comfrey Plants: How One Plant Became Seven More

Seven small comfrey plants were growing where I had never planted them.

They appeared in two raised vegetable beds inside our greenhouse, close to a large comfrey clump growing at the dead end of a pathway. I first noticed their small, rough leaves in spring and left them alone until I was sure what they were.

By June 12, 2026, they had become useful plants in inconvenient places. The beds were meant for vegetables, so I loosened the soil with a hand shovel, lifted seven plants, and moved them to the upper part of our land.

Volunteer comfrey plants spreading through our greenhouse raised bed reserved for annual vegetables.

Instead of becoming compost, those volunteer comfrey plants became the start of a wider fertility network.

The timing was poor. Temperatures were around 34°C (93°F), and I did not water them immediately. This was not textbook transplanting. It was a practical gamble with plants that had to move anyway.

Keep reading to Herman’s Tough Kraut Fixes for the most common transplanting and propagation problems linked to volunteer comfrey plants.

How One Seed-Grown Comfrey Started the Story

I bought seeds sold as Symphytum officinale, or common comfrey, in mid-2022.

That detail matters because my plant is not Bocking 14. Bocking 14 is a sterile selection of Russian comfrey that is normally multiplied through roots or division. Common comfrey can produce viable seed as well as regrow from roots.

One of my seedlings eventually became a large clump inside the greenhouse. It has been growing in the ground there for at least one year. It flowered in 2025 and has already been flowering again for several weeks in 2026.

Our mature seed-grown common comfrey flowering at the end of a narrow path between the greenhouse raised beds.

The new plants appeared the spring after last year’s flowering. Some were about 2 m (6.5 ft) from the mother plant and seemed to have their own roots when lifted.

My current belief is that they grew from seed dropped after the 2025 flowers. I cannot prove it. Root fragments moved through disturbed soil remain another possible cause.

The honest answer is simple: seed seems likely, but I did not watch the whole process from flower to germination.

Tough Tip: Treat volunteers as clues, not proof. Observe their timing, distance, and roots before deciding how they arrived.

What Seven Volunteer Comfrey Plants Taught Me

A valuable plant can still be growing in the wrong place. I want more comfrey across our property, but I do not want it taking over raised beds reserved for annual vegetables. Once the volunteers were large enough to lift, I removed seven and left two behind for further observation.

Loosening the soil around volunteer comfrey plants growing among vegetables in one of our greenhouse raised beds.

The plants came out fairly easily. Only afterwards did I wonder whether some of the longer roots could have been divided into smaller sections to create more plants.

I did not try that this time.

The transplants were already facing severe heat, and dividing them further may have added more stress. The two plants left in the greenhouse now give me another chance to compare root cuttings, crown division, and natural volunteers under better conditions.

Common comfrey should be placed with care. Roots left behind may regrow, and seed-grown plants may also appear beyond the original clump after flowering.

Tough Tip: Put comfrey where you can live with it for years. Beside a tree, it may be useful. In a permanent vegetable row, it may become a wrestling partner.

Turning Volunteers Into a Distributed Fertility Network

I moved the seven transplants to different locations on the upper part of our land, mainly around trees and near summer crops such as peppers and courgettes.

I chose these areas because they will receive regular water during summer due to the neighboring crops. That gives the comfrey a better chance than planting it in a dry corner that receives little attention.

I still do not know whether the plants will survive. They were moved in poor conditions and were not watered immediately.

If they establish, each plant could become a small local source of biomass.

One of the lifted volunteer comfrey plants showing the crown and root system that may support future regrowth and biomass production.

My intended uses include:

• cutting leaves for surface mulch around established trees;

• adding organic matter as the leaves break down;

• producing more material for homemade comfrey liquid fertilizer;

• allowing selected plants to flower for visiting insects;

• reducing the need to carry every leaf from one greenhouse clump.

Comfrey does not create fertility from nothing. It takes up nutrients from the soil and stores some in its leaves. Returning those leaves to the soil can recycle that material while adding biomass.

That is useful, but it does not replace compost, mulch, water, or wider soil care.

Tough Tip: Let new plants establish before cutting them hard. Roots first, fertilizer duty later.

Herman’s Tough Kraut Fixes: Volunteer Comfrey Plants Troubleshooting and FAQ

Volunteer comfrey plants can feel like a gift, a warning, or both. This troubleshooting FAQ covers the main questions that come up when comfrey appears outside its planned location.

Q: Are all volunteer comfrey plants seedlings?

A: No. Seed-grown common comfrey can produce seedlings, but root fragments may also form new plants. Check the flowering history, distance from the parent, and root structure. In my case, seed seems likely, but it remains an observation rather than proof.

Q: Can I transplant comfrey during hot weather?

A: You can, but spring or autumn is safer. My plants were moved at about 34°C because they had to leave the vegetable beds. Hot weather increases water loss and transplant stress, so survival may be lower.

Q: Should I water immediately after transplanting?

A: In most cases, yes. Water helps settle soil around the roots and reduces stress. I did not water mine immediately, which may reduce their chances. I partly offset that risk by planting them near summer crops that receive regular water.

Q: Can I divide the roots into more plants?

A: Possibly, but do not assume every small root piece will grow. Root size, health, moisture, and timing all matter. I plan to test measured root sections later rather than cutting roots at random.

Q: Where should I avoid planting common comfrey?

A: Avoid narrow paths, small raised beds, and areas that are dug often. Choose a place where long-term regrowth can be managed, such as around trees or in a dedicated biomass area.

From an Inconvenient Plant to a Useful Resource

Seven plants appeared where I did not want them, but that did not make them waste. I moved them, gave them new jobs, and accepted that the timing was far from ideal.

I still believe they most likely came from seeds produced after last year’s flowering, although roots remain another possible explanation. What matters now is what they become.

If even some survive, one seed purchase from 2022 will have started spreading biomass, flowers, and future plant feed across our homestead.

That is not a dramatic overnight transformation. It is a small, slow solution, which is often how resilience is built.

Have volunteer comfrey plants ever appeared in your garden, and did you move them, use them, or try to remove them?

Join the Kraut Crew and follow our practical experiments as we build fertility, grow food, and learn from the plants that refuse to follow the original plan.