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Guide botanique

Herb Robert.

Geranium robertianum

Prononciation jeh-RAY-nee-um roh-ber-tee-AH-num

Aussi appelée Herb Robert, Herb-Robert, Mountain Geranium, Robert Geranium, Robert's Geranium

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Herb Robert
Photo de Dan Killam (CC BY) via iNaturalist

Herb Robert is a charming, low growing plant often found in woodlands and rocky areas. It has a delicate appearance with lacy foliage and small pink flowers. You will find it is quite resilient and often spreads easily in the garden.

Une autre photo de Herb Robert
Photo de Daniel Cahen (CC BY) via gbif

En un coup d'œil

Niveau d'entretien
Facile
Type de plante
Herbaceous annual or biennial
Lumière
Partial shade to full sun
Lumière en intérieur
Lumière vive indirecte
Arrosage
Tous les 3 à 7 jours
Taille adulte
12 to 18 inches
Croissance
Rapide
Rusticité
USDA 4 à 9
Floraison
Late spring to early autumn

Entretien

Keep the soil consistently moist but not waterlogged to mimic its natural woodland habitat. Watch for wilting if the soil dries out too much, as this plant prefers steady hydration. It is quite adaptable, but it does best when it has a bit of protection from harsh afternoon sun.

Arrosage
Water whenever the top inch of soil feels dry to the touch.
Engrais
Apply a balanced liquid fertilizer sparingly during the active growing season.
Taille
Trim back spent flower stems to encourage a tidy appearance and prevent excessive self seeding.
Rempotage
Repot only if the plant becomes root bound or if you need to refresh the soil.
Sol
Well draining, humus rich soil
pH du sol
Neutral to slightly alkaline
Température
-20 à 30°C
Humidité
40 à 70%

Sécurité

Humains
The plant is generally considered non-toxic but may cause mild skin irritation in sensitive individuals.
Enfants
Keep away from small children as the foliage can be irritating if handled excessively or ingested.
Allergènes de contact
The glandular hairs on the stems and leaves can cause contact dermatitis in sensitive people.
Allergènes aéroportés
Pollen may cause mild reactions in those with severe seasonal allergies.
Comestibilité
While historically used in herbal medicine, it is not recommended for consumption due to potential toxicity and lack of modern safety data.

Comment l'identifier

  • Lacy, fern like foliage
  • Small five petaled pink flowers
  • Stems often turn reddish
  • Distinctive musky scent when crushed
Hauteur
0,1 à 0,5m
Envergure
0,15 à 0,4m
Feuilles
green, reddish-bronze, deciduous
Fleurs
pink, magenta, 1 à 2cm
Fruits
brown, Summer to autumn

Problèmes courants

  • Powdery mildew — A fungal infection that appears as white dusty spots on leaves during humid weather.

La cultiver

Multiplication
seed
Quand planter
spring, autumn

Plant it in areas where you want a naturalizing ground cover, but be prepared to pull seedlings if they spread too far.

Bonnes associations

  • Foxglove — They share similar woodland habitat requirements and bloom times.
  • Western sword fern — Ferns provide the dappled shade and moisture that this geranium prefers.

Espèces similaires

  • Geranium molle — It is a similar small-flowered annual geranium often found in similar habitats.

Science

Famille
Geraniaceae
Genre
Geranium
Ordre
Geraniales
Classe
Magnoliopsida
Région d'origine
Europe, Asia, and parts of North Africa.
Préservation
It is a common and widespread plant not currently of conservation concern.

It grows in moist, shaded environments like woodland floors and rocky crevices where it can easily colonize disturbed soil.

Intérêt pour la faune
nectar source
Pollinisateurs
abeilles, papillons, papillons de nuit
Utilisations
ground cover, woodland gardens, pollinator gardens

Au fil des saisons

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Floraison
Fructification
Feuillage

Repères écologiques

Salinité
1/9
Réaction du sol
6/9
Lumière
4/9
Température
5/9
Humidité
5/9
Nutriments
5/9

Taxonomie vérifiée avec le GBIF.

Ce qu'on demande souvent

Is Herb Robert a weed?
It is often considered a weed because it spreads quickly by seed, though many gardeners appreciate its delicate flowers.
Does it grow in shade?
Yes, it thrives in partial to full shade, making it perfect for woodland areas.

D'où vient le nom

The scientific name honors Saint Robert, who was thought to have used the plant to cure various ailments. The common name Herb Robert is a direct derivation of this association.

Bon à savoir

  • The leaves often turn a brilliant red color in the autumn or when exposed to full sun.
  • It is an annual or biennial plant that readily self-seeds in the garden.
  • The seeds are ejected explosively from the fruit capsule to spread away from the parent plant.

Ta plante a mauvaise mine ?

Cette page est un guide général. Pocket Botanist diagnostique les problèmes directement à partir d'une photo de ta plante, adapte l'arrosage à sa luminosité et te prévient quand il faut t'en occuper.

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Télécharger l'appli

Ce guide a été généré par IA et vérifié avec la taxonomie du GBIF. Il s'agit d'informations générales, et non de conseils horticoles ou vétérinaires. Découvre comment nous concevons ces guides.