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Guide botanique

Shamrock.

Oxalis

Prononciation ok-SAL-iss try-ang-gu-LAR-iss

Aussi appelée Sorrel, Sorrels, Suurings, Wood Sorrel, Wood-sorrels, Woodsorrel, Woodsorrels, billy goat grass

Largeflower pink-sorrel
Photo de WATANABE Hitoshi 渡辺仁 (CC BY) via iNaturalist

The purple shamrock is a charming plant known for its deep, triangular leaves that fold up at night. It is a bulbous perennial that adds a lovely splash of color to any indoor space. You will find it quite responsive to light, moving its foliage throughout the day.

En un coup d'œil

Care level
Easy
Plant type
Bulbous perennial
Light
Bright indirect light is best for keeping the leaves vibrant.
Indoor light
bright-indirect
Water
Every 7 to 10 days
Mature size
30 cm tall and 30 cm wide
Growth rate
medium
Hardiness
USDA 7 to 10
Bloom time
Spring to summer

Entretien

Keep the soil lightly moist and provide plenty of bright, indirect light to maintain its vibrant color. Watch for leggy stems, which indicate the plant needs more light, and allow it a short dormant period if it begins to look tired. Ensure the pot has good drainage to prevent the bulbs from sitting in water.

Watering
Water when the top inch of soil feels dry to the touch.
Feeding
Use a balanced liquid fertilizer diluted to half strength during the growing season.
Pruning
Trim back any yellowing or damaged stems at the base to encourage fresh growth.
Repotting
Repot in the spring if the bulbs become too crowded in the container.
Soil
Well draining peat based potting mix
Soil pH
6.0 to 7.0
Temperature
15 to 24°C
Humidity
40 to 60%
Drought tolerance
moderate
Lifespan
Perennial, typically 3 to 5 years.
Deer and rabbits
moderate

Signes qu'il faut rempoter

  • Roots growing out of the drainage holes.
  • The plant stops producing new leaves.
  • Water runs straight through the pot without soaking in.

Sécurité

People
The plant is considered toxic if consumed in large amounts due to high levels of oxalic acid.
Pets
This plant is toxic to cats and dogs if ingested due to soluble calcium oxalates.
Children
Keep this plant away from small children as ingestion of large quantities of leaves can cause stomach upset.
Contact allergens
Some individuals may experience mild skin irritation from handling the sap.
Airborne allergens
There is no significant evidence of respiratory allergies from this plant.
Edibility
Oxalis contains oxalic acid, which can be harmful in large quantities or for people with kidney issues.

Comment l'identifier

  • Deep purple triangular leaflets
  • Leaves fold closed at night
  • Delicate white or pink flowers
  • Grows from small scaly bulbs
Height
0.15 to 0.3m
Spread
0.15 to 0.3m
Leaves
purple, burgundy, evergreen
Flowers
white, pink, 1 to 2cm

Problèmes courants

  • Rust Small orange or brown spots appear on the undersides of leaves.
  • Aphids Tiny insects that suck sap from new growth and cause leaf curling.

La cultiver

Propagation
division
When to plant
spring
Overwintering
If growing outdoors in cold climates, bring containers inside or mulch heavily. If the plant goes dormant, keep the soil barely moist until new growth appears.
In containers
Oxalis grows very well in pots, and a 6 inch container is usually sufficient for a single plant.

Division of Bulbs

  1. Gently lift the plant from its pot during the dormant season.
  2. Separate the small bulbs or offsets from the main clump.
  3. Replant the offsets in fresh, well draining potting mix.

Pair Oxalis with plants that have similar water needs to ensure they thrive together without one outcompeting the other.

Bonnes associations

  • Ferns They share similar light and moisture requirements in shady garden spots.
  • Hostas Their broad leaves provide a nice textural contrast to the delicate Oxalis foliage.

À éloigner de

  • Turf Grass Oxalis can become invasive and compete aggressively with lawn grasses.

Espèces similaires

  • Shamrock Often confused due to the three leaf structure, though they are unrelated.

Science

Family
Oxalidaceae
Genus
Oxalis
Order
Oxalidales
Class
Magnoliopsida
Native range
Found globally, with high diversity in South America and South Africa.
Conservation
Most common Oxalis species are widespread and not of conservation concern.

It often colonizes disturbed soil or forest floors, utilizing its ability to grow from small bulbs or rhizomes to spread quickly.

Value to wildlife
nectar source
Pollinators
bees, butterflies
Uses
ornamental groundcover, container plant, rock garden accent

Au fil des saisons

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Flowering
Fruiting
Foliage

Repères écologiques

Salinity
2/9
Soil reaction
5/9
Light
5/9
Temperature
5/9
Moisture
4/9
Nutrients
4/9

Taxonomie vérifiée avec le GBIF.

Ce qu'on demande souvent

Is Oxalis a weed?
Some species are considered aggressive garden weeds, while others are prized ornamentals.
Does it need full sun?
Most prefer bright, indirect light to partial shade.

D'où vient le nom

The name Oxalis is derived from the Greek word oxys, meaning acid, referring to the sour taste of the leaves. The common name wood sorrel also highlights this acidic flavor profile.

Bon à savoir

  • The name Oxalis comes from the Greek word for acid.
  • Some species are known as wood sorrel.
  • The leaves are often shaped like clover but are not true clovers.

Ton shamrock 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.

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.