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How to Grow Rue (ruta graveolens)
- Plant: perennial
- Hardy to -20°C
- Height: 70-100cm
- Soil: slightly alkaline
- Exposure: sun
- Propagation: seeds, division
- Uses: landscape only
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Rue, or Herb-of-Grace, has blue-green leaves that are deeply notched
and divided. Rather than ending in points however, the divisions become
wider at their outer ends. Small yellow-green flowers grow several
together in terminal clusters, and later turn into decorative brown seed
capsules that have a beautiful carved appearance. Rue is perennial, and
the stems branch upwards from the root to about 70-100cm. The foliage
has a strong, pungent aroma. The variety 'Blue Mound' has decorative
blue-gray foliage.
Rue has been used in the past for medicinal purposes. King
Mithridates of Pontus is said to have taken small daily doses of a
mixture of rue and other poisonous herbs to make himself immune to the
poisons he feared his rivals were trying to use to assassinate him.
Other beliefs were that if the tip of an arrow was dipped in juice
extracted from rue it would never miss its target, and that if the
flints of old-fashioned guns were boiled with rue leaves, the weapon
would always be accurate. The word rue means sorrow or pity, and the
leaves were at one time supposed to have been added to holy water used
to bless sinners in Holy Communion.
Plant rue in full sun in good, slightly alkaline garden soil. Grow
new plants from seeds or divisions.
Rue is not used very much today as a culinary herb, but the seed
heads are often used in arrangements, wreaths, and other dried
decorations. Some persons are allergic to rue which may cause a skin
rash.
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