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Urtica incisa

Common name:	Scrub Nettle	Family:	Urticaceae
Author:	Poir.	Botanical references:	154, 265
Synonyms:
Known Hazards:	The leaves of the plants have stinging hairs, causing irritation to the skin[21, 200]. This action is neutralized by heat so the cooked leaves are perfectly safe and nutritious[200]. However, only young leaves should be used because older leaves develop gritty particles called cystoliths which act as an irritant to the kidneys[172].
Range:	Australia - New South Wales, Queensland, Tasmania, Victoria. Also found in New Zealand.
Habitat:	Usually in damp gullies in Australia[154]. Lowland to montane forests, forest margins and shaded open places throughout New Zealand[173].
Edibility Rating (1-5):	3	Medicinal Rating (1-5):	0

Epithets:	From a Dictionary of Botanical Epithets
	incisa = deeply cut;
Systematics:	From a USDA Plants Database
	Order: Urticales. Nettle family

Physical Characteristics

Perennial growing to 1.8m. It is not frost tender. The flowers are monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and are pollinated by Wind. The plant not is self-fertile. We rate it 3/5 for edibility and 0/5 for medicinal use.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils. The plant prefers acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It requires moist soil.

Habitats and Possible Locations

Woodland, Sunny Edge, Dappled Shade, Shady Edge.

Edible Uses

Drink; Leaves.

Young leaves - cooked[144, 173]. A tasty vegetable[193]. A very nutritious food, high in vitamins and minerals, it makes an excellent spinach substitute and can also be added to soups and stews. Only use the young leaves and wear stout gloves when harvesting them to prevent getting stung. Although the fresh leaves have stinging hairs, thoroughly drying or cooking them destroys these hairs.
Nettle beer is brewed from the young shoots[200].

Medicinal Uses

Disclaimer

None known

Other Uses

Compost; Dye; Fibre; Hair; Liquid feed; Repellent.

A strong flax-like fibre is obtained from the stems[154, 156, 200]. Used for making string and cloth, it also makes a good quality paper[115]. It is harvested as the plant begins to die down in early autumn and is retted before the fibres are extracted[4, 99].

The following uses have been listed for U. dioica, but they are almost certainly also applicable to this species.

The plant matter left over after the fibres have been extracted are a good source of biomass and have been used in the manufacture of sugar, starch, protein and ethyl alcohol[4].
An oil obtained from the seeds is used as an illuminant[4].
An essential ingredient of 'QR' herbal compost activator[32]. This is a dried and powdered mixture of several herbs that can be added to a compost heap in order to speed up bacterial activity and thus shorten the time needed to make the compost[K]. The leaves are also an excellent addition to the compost heap[12, 18, 20] and they can be soaked for 7 - 21 days in water to make a very nutritious liquid feed for plants[54]. This liquid feed is both insect repellent and a good foliar feed[14, 18, 53].
The growing plant increases the essential oil content of other nearby plants, thus making them more resistant to insect pests[18, 20, 54].
Although many different species of insects feed on nettles, flies are repelled by the plant so a bunch of freshly cut stems has been used as a repellent in food cupboards[4].
The juice of the plant, or a decoction formed by boiling the herb in a strong solution of salt, will curdle milks and thus acts as a rennet substitute[4]. This same juice, if rubbed into small seams of leaky wooden tubs, will coagulate and make the tub watertight again[4].
A hair wash is made from the infused leaves and this is used as a tonic and antidandruff treatment[172, 201].
A beautiful and permanent green dye is obtained from a decoction of the leaves and stems[4, 115].
A yellow dye is obtained from the root when boiled with alum[4, 115].

Cultivation details

We have very little information on this species and do not know if it will be hardy in Britain, though judging by its native range it should succeed outdoors at least in the milder parts of the country. The following notes are based on the general needs of the genus.
Prefers a nitrogen-rich soil[200]. The best fibre is produced when plants are grown on deep fertile soils[200].
Dioecious. Male and female plants must be grown if seed is required.

Propagation

Seed - sow spring in a cold frame, only just covering the seed. Prick out the seedlings into individual pots when they are large enough to handle, and plant them out in the summer.
Division succeeds at almost any time in the growing season. Very easy, plant them straight out into their permanent positions.

Suppliers

For more details of plant suppliers please see our Suppliers Page which lists many more places to look.

Web References

Details of Medicinal Uses, Habitats, etc. in M. Grieve A Modern Herbal (1931) [4]
[HP] Links, Photos, Suppliers from Hortiplex Plant Database

See the PFAF Links Pages for other sources.

Also try Photos and info from the The Plants Database which has 14,000 images.

References

[K] Ken Fern
Notes from observations, tasting etc at Plants For A Future and on field trips.

[4] Grieve. A Modern Herbal. Penguin 1984 ISBN 0-14-046-440-9
Not so modern (1930's?) but lots of information, mainly temperate plants.

[12] Loewenfeld. C. and Back. P. Britain's Wild Larder. David and Charles ISBN 0-7153-7971-2
A handy pocket guide.

[14] Holtom. J. and Hylton. W. Complete Guide to Herbs. Rodale Press 1979 ISBN 0-87857-262-7
A good herbal.

[18] Philbrick H. and Gregg R. B. Companion Plants. Watkins 1979
Details of beneficial and antagonistic relationships between neighbouring plants.

[20] Riotte. L. Companion Planting for Successful Gardening. Garden Way, Vermont, USA. 1978 ISBN 0-88266-064-0
Fairly good.

[21] Lust. J. The Herb Book. Bantam books 1983 ISBN 0-553-23827-2
Lots of information tightly crammed into a fairly small book.

[32] Bruce. M. E. Commonsense Compost Making. Faber 1977 ISBN 0-571-09990-4
Excellent little booklet dealing with how to make compost by using herbs to activate the heap. Gives full details of the herbs that are used.

[53] De. Bray. L. The Wild Garden.
Interesting reading.

[54] Hatfield. A. W. How to Enjoy your Weeds. Frederick Muller Ltd 1977 ISBN 0-584-10141-4
Interesting reading.

[99] Turner. N. J. Plants in British Columbian Indian Technology. British Columbia Provincial Museum 1979 ISBN 0-7718-8117-7
Excellent and readable guide.

[115] Johnson. C. P. The Useful Plants of Great Britain.
Written about a hundred years ago, but still a very good guide to the useful plants of Britain.

[144] Cribb. A. B. and J. W. Wild Food in Australia. Fontana 1976 ISBN 0-00-634436-4
A very good pocket guide.

[154] Ewart. A. J. Flora of Victoria.
A flora of eastern Australia, it is rather short on information that is useful to the plant project.

[156] Cribb. A. B. and J. W. Useful Wild Plants in Australia. William Collins Pty Ltd. Sidney 1981 ISBN 0-00-216441-8
A very readable book.

[172] Schofield. J. J. Discovering Wild Plants - Alaska, W. Canada and the Northwest.
A nice guide to some useful plants in that area.

[173] Crowe. A. Native Edible Plants of New Zealand. Hodder and Stoughton 1990 ISBN 0-340-508302
A very well written and illustrated book based on the authors own experiments with living on a native diet.

[193] Low. T. Wild Food Plants of Australia. Angus and Robertson. 1989 ISBN 0-207-14383-8
Well presented, clear information and good photographs. An interesting read for the casual reader as well as the enthusiast

[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992 ISBN 0-333-47494-5
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.

[201] Allardice.P. A - Z of Companion Planting. Cassell Publishers Ltd. 1993 ISBN 0-304-34324-2
A well produced and very readable book.

[265] Carolin. R. & Tindale. M. Flora of the Sydney Region Reed. Australia. 1993 ISBN 0730104001
Concise flora with little beyond an extensive key, species descriptions, very brief habitat description.

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Plant information taken from the Plants For A Future - Species Database. Copyright (c) 1997-2003.
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