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Species Datapage No 34   

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Species Common Name: Valerian or Wild Valerian 
Species Botanical Name: Valerian officinalis
A plant typical of the banks and meadows of the River Shannon
 
2002_01.png (224663 bytes)Wild Valerian is a very important medicinal plant.  In Ireland this plant is becoming scarce as it's habitats disappear. 

We find this plant very difficult to germinate from seed,  When it does germinate the roots of the plant tend to be frost tender and have specialised in the way that it attaches to the ground, in that the crown stays above the soil in wet land where it floods.

Management:   In meadows keep the soil wet, block up your drains and allow an amount of thatch to develop to provide protection to the root zone of the plant.  Winter flooding also helps protect against the frost.  The plant is not frost tender in Horticulture as it is ground to have its roots below soil level.

Whatever, never destroy a meadow where this plant is found naturally.  Seek advice from your local wildlife advisor or contact us.

Valerian is also found in open damp wood, and is a very useful species in such situations as little else flowers at the end of summer in wet woods.
Tolerance of cutting: Low, 
Cutting time: Spring, 
Edible / Medicinal: , Medicinal,
 

Life Cycle (Form): Annual, Biennial, Perennial

Flower Height: 50 to 125 cm

Foliage Height: 25 - 40 cm

Flower Colour: Pinkish - White, Pink

Flowering period: July, August, 

Time to Flower:  24 months

Soil Type: Will grow in damp rich soils.

pH Type: Acid, Neutral, Alkaline.

Moisture: Moist, Wet

Aspect:  Full sun, Damp open woods

Wildlife Value: High, Attracts Butterflies, Bees, Hoverflies and Insects.
 

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Species Common Name: Wood Avens or Herb Bennet
Species Botanical Name: Geum urbanum
_wood_avens.png (230735 bytes)

Ideal for under large trees where it will spread and provide no trouble colour and not smother choice shrubs or young tree seedlings.

Flowering later than most shade tolerant species its a welcome bonus to dark summer woodland.

A great hedgerow species.

Management:   Easy, hardy, tough plant with good ability to support it self without any trouble.  Not for the small garden unless you plant to have ground cover.
Tolerance of cutting: High
Cutting time: Late Summer, Autumn.
Edible / Medicinal:  
 

Life Cycle (Form): Perennial

Flower Height: 20 to 40 cm

Foliage Height: 5 - 10 cm

Flower Colour: Yellow,

Flowering period: May, June, July, 

Time to Flower: 16, months

Soil Type: Will grow in most soils.

pH Type: Mildly Acid, Neutral, Alkaline.

Moisture: Dry, Moist, Wet

Aspect:  Full sun, Partial shade, Deep shade.

Wildlife Value: Medium.

 

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Species Common Name: *Wild Parsnip
Species Botanical Name: Pastinaca sativa
 
parsnip001.png (189698 bytes)Sorry no 'close up' photograph. The photo shows a meadow in the Ballast Field, Athlone, where for years this plant grew until the site was filled in. Wild parsnip is the yellow flower in the foreground.

This plant will be well behaved where it grows in grassland, on its own it reaches for the sky and becomes far to tall, unless you want a stunning tall yellow flower. 

Management: Allow to set seed. 

Note:  The hollow stems of this plant will over winter many insect species. Do not cut all of a meadow where this plant survives, cut the largest clump in spring.

Tolerance of cutting: Low, 
Cutting time: Spring, Autumn.
Edible / Medicinal: Edible ancestor. 
 

Life Cycle (Form):  Biennial, 

Flower Height: 60 to 200 cm

Foliage Height: 25 - 60 cm

Flower Colour: Yellow, 

Flowering period: July, August, 

Time to Flower: 12, months

Soil Type: Will grow in most dry soils. 

pH Type: Acid, Neutral, Alkaline.

Moisture: Dry, 

Aspect:  Full sun, 

Wildlife Value: High, Attracts Hoverflies and Insects.

 

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