Which comfrey is not invasive?

Unlike wild and common comfrey, Bocking* #4 and #14 Russian Comfrey are domesticated, non-invasive variants of Russian Comfrey. Bocking comfrey plants do not spread or seed, and can remain where they are planted for years.

Is common comfrey invasive?

1. Comfrey is a highly invasive plant, especially varieties that grow from seed. 2. It is extremely difficult to get rid of once it is fully mature and well-established.

Is White comfrey invasive?

Tuberous comfrey has creamy white flowers. Vegetative growth does not cease with the start of flowering, and the plant will add new stems continuously during the growing season. Most comfrey plants can be somewhat invasive, spreading via seed to parts of the garden where they are not wanted.

Does bocking 4 comfrey spread?

Essential Notes on Our Bocking #4 Comfrey – Bocking comfrey plants do not spread or seed, and can remain where they are planted for years.

Is it safe to grow comfrey?

It is an extremely tolerant and resilient plant. Suitable for perennial cultivation in USDA Hardiness Zones 4-9, it is not very sensitive to soil conditions or pH, and it spreads rapidly. There is no need to worry much about weed control, because comfrey’s large, quick-growing leaves will shade them out.

Does comfrey take over?

But it also makes comfrey plants difficult to eradicate if you ever want to remove them. Any small portion of the root left in the soil after you dig up a plant likely will grow a new plant. If you want to limit the plant’s spread, it’s often best to grow it in a container or raised garden bed instead of the ground.

Why did FDA ban comfrey?

a cancer-causing agent. The US Food and Drug Administration on Friday asked makers of dietary supplements containing the herb comfrey to withdraw their products due to the danger of liver damage and its possible role as a cancer-causing agent.

How can you tell Common Comfrey?

How to identify. The comfreys are a small group, but can be difficult to tell apart from each other as hybrids are common. Common comfrey has large, oval, hairy leaves, and clusters of drooping, tubular flowers that are pinky-purple in colour.

What is the difference between borage and comfrey?

It’s easy to tell comfrey and borage apart when they bloom. Borage flowers are always blue while comfrey flowers bloom in white, pink and purple. The flowers have different shapes, as well, with comfrey flowers shaped like bells and borage flowers like stars.

Should comfrey be cut back?

Cultivation of Comfrey – In the first year (second for autumn planted) allow the plants to grow to the point where it throws up flower stalks and then cut back to about 15cm (6″) from the ground. Leaving the cut leaves on the ground as a weed suppressing mulch will return some of the goodness back to the plant.

How deep do comfrey roots go?

Mineral Dam. The Comfrey has deep roots of up to 2 m that utilize nutrients deep in the subsoil that would otherwise wash away with the underground soil water or remain inaccessible to other plants.

Does comfrey come back every year?

Extremely cold hardy perennials, comfrey plants become dormant in winter and re-emerge every spring.

Is borage invasive?

Borage is often referred to as invasive because of its rampant self-seeding habit. However, the seedlings are easy to identify and remove so it rarely becomes a major problem. Borage leaves and flowers are edible and have a cucumber flavor.

Is comfrey invasive BC?

Common comfrey is a known problem in the Peace River region. It is very difficult to remove due to its tendency to sprout whole plants from small root fragments.

Is comfrey invasive Australia?

Be very careful, as this plant can be invasive—just cutting the leaves and stem can cause more plants to grow.

How do you stop comfrey from spreading?

However, comfrey will often take over wherever it is planted. In order to solve this problem, consider planting comfrey in a container or creating a solid barrier to prevent it from spreading. Also, as a perennial, though comfrey will die back in the winter, you can expect it to return even more generously each spring.

Is Russian comfrey invasive?

Russian Comfrey (Boking 4, Non-invasive)- bundle of 1 Comfrey, 1 Hyssop. Comfrey: Companion plant for fruit trees, plant at at base to shade out weeds, grass. Deep roots pull up soil nutrients; chop off leaves and drop them near ailing plants. Attracts beneficial insects.

Does comfrey spread by roots?

Many people worry that comfrey will become invasive and spread. Our comfrey does not produce viable seed and stays in place. It will only spread if disturbed because any piece of comfrey root will make a new plant. So any digging or rototilling near comfrey will result in new plants.

Can I plant comfrey under fruit trees?

Comfrey as a Companion Plant – Growing comfrey under fruit trees and shrubs in the Permaculture Orchard creates an incredible companionship. Establishing a weed free bed around your trees ensures that they can establish themselves without having to compete with grasses and weeds for nutrients.

Is comfrey Bocking 14 invasive?

Comfrey also self-seeds. Between the self-seeding and root regrowth, comfrey can become invasive. There is a sterile species of comfrey, Symphytum x uplandicum ‘Bocking 14’, which eliminates the self-seeding problem in the garden.

Is comfrey toxic to dogs?

The Merck Veterinary Manual lists comfrey as an especially risky herb because of its pyrrolizidine alkaloids, which have been linked to liver damage. The alkaloids are actually produced by the herb to fend off bugs, but the insecticide can be harmful to a dog.

What is the difference between true comfrey and Russian comfrey?

While true comfrey can spread easily, Russian comfrey has sterile seed, so it won’t take over the garden. That benefit, plus the fact that it is a vigorous grower, is why many permaculture gardeners grow it as biomass for mulch or green manure.

Is Russian comfrey the same as Bocking 14?

Herbaceous perennial flowering to 3 feet, a hybrid of Russian Symphytum asperum and European Symphytum officinalis. Bocking 14 cultivar of Russian Comfrey (Symphytum x uplandicum). Sterile hybrid does not make seeds.

What is Russian comfrey used for?

Comfrey is used as a tea for upset stomach, ulcers, heavy menstrual periods, diarrhea, bloody urine, persistent cough, painful breathing (pleuritis), bronchitis, cancer, and chest pain (angina). It is also used as a gargle for gum disease and sore throat.

How can you tell a foxglove from a comfrey?

Comfrey could be mistaken for foxglove when not in flower, as the leaves are similar. However, comfrey leaves are untoothed, meaning they have smooth edges, and foxglove leaves are toothed. Great mullein (Verbascum thapsus) is another plant foxglove might be confused with when no flowers are present.

Can you eat tuberous comfrey?

Today, eating or taking any form of comfrey by mouth isn’t recommended. It’s considered unsafe, due to the pyrrolizidine alkaloids that comfrey contains. These are dangerous chemicals that can cause cancer, severe liver damage, and even death when you consume them.

Can Russian comfrey be used medicinally?

Comfrey has several medicinal actions. It is known as a vulnerary and as an astringent. These properties make it useful in the healing of minor wounds, both internal and external. Comfrey can be used for minor injuries of the skin, where it will work to increase cell production, causing wounds to heal over rapidly.

Do you deadhead comfrey?

As comfrey can be an aggressive spreader, you may want to plant within a physical barrier and deadhead flowers to rein in its spreading habit. Comfrey plants are easy to grow and require very little maintenance once established.

Does comfrey plant grow wild?

Wild comfrey (Cynoglossum virginianum) of the Borage (Boraginaceae) family is a short perennial with large leaves and pale blue flowers. In the US, it occurs from Texas to Illinois to New York to the Atlantic and Gulf Coasts.

Does comfrey really improve soil?

Comfrey is high in just about every nutrient a plant needs, including the big three, nitrogen, phosphorus and potassium, and many trace elements. Its high carbon to nitrogen value means that it does not deplete nitrogen from the soil, as it decomposes. It becomes a good source of nitrogen.

Which variety of comfrey is best?

Russian comfrey (Symphytum x uplandicum) is the most popular type of comfrey for the grower, it’s a hybrid of Symphytum officinale (common comfrey) and Symphytum asperum (rough comfrey).

Which comfrey is best for fertilizer?

Comfrey is more than just an herb found in cottage gardens and seasoning blends. This old fashioned herb has been used as both a medicinal plant and food crop for grazing animals and hogs. The large hairy leaves are an excellent source of the three macro-nutrients found in fertilizer.


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