Symphytum grandiflorum
A.DC.
Boraginaceae
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Common Name:
General Information
Symphytum grandiflorum is a perennial plant that can grow up to 0.40 metres tall.
The plant is sometimes grown as an ornamental, where it can be used to make a ground cover
Known Hazards
No reports of toxicity have been seen for this species, but the following reports have been seen for S. officinale.
This plant contains small quantities of a toxic alkaloid which can have a cumulative effect upon the liver. Largest concentrations are found in the roots, leaves contain higher quantities of the alkaloid as they grow older and young leaves contain almost none. Most people would have to consume very large quantities of the plant in order to do any harm, though anyone with liver problems should obviously be more cautious. In general, the health-promoting properties of the plant probably far outweigh any possible disbenefits, especially if only the younger leaves are used.
Botanical References
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
Range
Europe - the Caucasus. Naturalized in Britain.
Habitat
Not infrequently naturalized in hedges and woods in S. England and the Midlands[
17- Title
- Flora of the British Isles.
- Publication
-
- Author
- Clapham, Tutin and Warburg.
- Publisher
- Cambridge University Press
- Year
- 1962
- ISBN
- -
- Description
- A very comprehensive flora, the standard reference book but it has no pictures.
].
Properties
Habit | Perennial |
Height | 0.40 m |
Growth Rate | Fast |
Pollinators | Bees |
Cultivation Status | Wild |
Cultivation Details
Tolerates most soils and situations but prefers a moist soil and some shade[
1- Title
- RHS Dictionary of Plants plus Supplement. 1956
- Publication
-
- Author
- F. Chittendon.
- Publisher
- Oxford University Press
- Year
- 1951
- ISBN
- -
- Description
- Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [200]).
,
4- Title
- A Modern Herbal.
- Publication
-
- Author
- Grieve.
- Publisher
- Penguin
- Year
- 1984
- ISBN
- 0-14-046-440-9
- Description
- Not so modern (1930's?) but lots of information, mainly temperate plants.
]. Grows well in heavy clay soils. Grows well under trees[
208- Title
- Plants for Ground Cover
- Publication
-
- Author
- Thomas. G. S.
- Publisher
- J. M. Dent & Sons
- Year
- 1990
- ISBN
- 0-460-12609-1
- Description
- An excellent detailled book on the subject, very comprehensive.
].
There are some named varieties, selected for their ornamental value[
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
Plants can be invasive, often spreading freely by means of self-sown seed[
200- Title
- The New RHS Dictionary of Gardening. 1992.
- Publication
-
- Author
- Huxley. A.
- Publisher
- MacMillan Press
- Year
- 1992
- ISBN
- 0-333-47494-5
- Description
- Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
]. The root system is very deep and difficult to eradicate, even small fragments of root left in the soil can produce new plants.
Edible Uses
None known
Medicinal
None known
Other Uses
A very good ground cover plant[
188- Title
- The RHS Gardener's Encyclopedia of Plants and Flowers
- Publication
-
- Author
- Brickell. C.
- Publisher
- Dorling Kindersley Publishers Ltd.
- Year
- 1990
- ISBN
- 0-86318-386-7
- Description
- Excellent range of photographs, some cultivation details but very little information on plant uses.
,
208- Title
- Plants for Ground Cover
- Publication
-
- Author
- Thomas. G. S.
- Publisher
- J. M. Dent & Sons
- Year
- 1990
- ISBN
- 0-460-12609-1
- Description
- An excellent detailled book on the subject, very comprehensive.
]. It spreads rapidly to form a good carpet, rooting as it spreads, and should be spaced about 60cm apart each way[
208- Title
- Plants for Ground Cover
- Publication
-
- Author
- Thomas. G. S.
- Publisher
- J. M. Dent & Sons
- Year
- 1990
- ISBN
- 0-460-12609-1
- Description
- An excellent detailled book on the subject, very comprehensive.
].
Propagation
Seed - sow spring or autumn in a cold frame. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts.
If you have sufficient seed you can try an outdoor sowing in situ in the spring.
Division succeeds at almost any time of the year. Simply use a spade to chop off the top 7cm of root just below the soil level. The original root will regrow and you will have a number of root tops, each of which will make a new plant. These can either be potted up or planted out straight into their permanent positions.
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