Oxalis triangularis

Oxalis triangularis, also known as purple shamrock or false shamrock, is a fascinating plant known for its distinctive triangular, purple leaves and its ability to fold down its leaves at night or in dim light, a phenomenon known as nyctinasty.

Here are some facts about this intriguing plant:

Distinctive Appearance: Oxalis triangularis is easily recognizable by its deep purple, almost black, triangular leaves that are arranged in groups of three, resembling a shamrock. This unique coloration can add a striking contrast to green foliage in gardens or indoor settings.

Flowers: It produces small, delicate flowers that can range in color from white to pink to lavender, typically blooming in late spring to early summer. The flowers add to the decorative appeal of the plant.

Light Sensitivity: The plant demonstrates a remarkable sensitivity to light, with its leaves opening in bright light and closing in the evening or in dim conditions. This behavior is part of its survival strategy, helping to conserve moisture and protect from predators.

Growth and Propagation: Oxalis triangularis can be propagated through division of its bulb-like structures called corms. It can grow well in containers and is often used as a houseplant. It prefers well-drained soil and moderate watering, avoiding overly wet conditions which can lead to root rot.

Edibility: The leaves of Oxalis triangularis are edible and have a tart, lemony taste due to their oxalic acid content. However, they should be consumed in moderation as oxalic acid can inhibit the absorption of calcium and can lead to the formation of kidney stones in susceptible individuals.

Cultural Significance: Although not a true shamrock (which belongs to the genus Trifolium), the purple shamrock is often associated with St. Patrick's Day due to its shamrock-like appearance and is used in decorations and gifts around the holiday.

Care: Oxalis triangularis prefers bright, indirect light and temperatures between 60°F and 75°F (15°C and 24°C). Overwatering should be avoided, and the soil should be allowed to dry out between waterings.

Dormancy: This plant can enter a period of dormancy, especially if exposed to cooler temperatures or if it has been stressed. During dormancy, the plant may appear to die back, but with proper care, it can return to growth when conditions improve.

Oxalis triangularis is a versatile and attractive plant that can add beauty and interest to both indoor and outdoor settings with its unique foliage and adaptive behaviors.

Purple Oxalis

Purple Shamrock


Oxalis triangularis



We started out with 2 plants in the garden. It will propagate itself and spread pretty rapidly. Here in zone 9 it lasts all year round and blooms several times especially after a good rain. Does best in zones 8 thru 11. Likes the partial shade best. Keep mulched and you have a friend for life.

Discover the Mesmerizing Beauty and Unmatched Resilience of Purple Oxalis

The Magnificent Purple Oxalis – A Botanical Marvel

Originating from the South American continent, the Purple Oxalis (Oxalis triangularis) is a perennial herbaceous plant that holds a special place in the hearts of gardeners worldwide. Boasting vibrant, heart-shaped leaves that come in a mesmerizing shade of purple, this plant adds a touch of magic to any landscape.

Embrace Diversity: Explore Different Varieties of Purple Oxalis

Did you know that the Purple Oxalis family offers an incredible array of varieties to suit your unique gardening preferences? From the traditional Purple Shamrock (Oxalis triangularis) to the stunning Charmed Wine (Oxalis triangularis 'Charmed Wine'), or the dainty Iron Cross (Oxalis tetraphylla), there is a Purple Oxalis variety to complement every garden style.

Cultivating Purple Oxalis: A Journey of Patience and Delight

One of the many charms of the Purple Oxalis lies in its ability to thrive in various conditions, making it an ideal choice for both seasoned gardeners and green thumbs just starting out. In this section, we will delve into crucial cultivation tips, including suitable soil conditions, watering techniques, and the importance of providing adequate sunlight to ensure your Purple Oxalis flourishes.

Purple Oxalis: A True Survivor Against Adversity

Nature has bestowed upon Purple Oxalis a unique resilience that sets it apart from most other plants. This section will explore how this extraordinary plant is built to withstand harsh climates, making it a reliable companion for gardeners in regions with unpredictable weather patterns. Discover the fascinating mechanisms behind its tenacity and learn how to help your Purple Oxalis face the harshest conditions with grace and poise.

Purple Oxalis as a Symbol of Good Luck and Wonder

Throughout history, the Purple Oxalis has been associated with good fortune and wonder. We will explore the folklore surrounding this captivating plant, tracing its cultural significance and the stories that have been passed down through generations. Delve into the enchanting tales that have made the Purple Oxalis a beloved symbol of luck and prosperity.

Companion Planting: Create a Harmonious Garden Sanctuary

Beyond its undeniable beauty, Purple Oxalis also has the power to complement and enhance the growth of other plants nearby. Discover how to incorporate this stunning plant into your existing garden beds or create dedicated Purple Oxalis enclaves that will captivate visitors and inspire awe.

Common Pests and Diseases: Navigating Challenges with Care

Even the most resilient plants can sometimes face challenges from common pests and diseases. In this section, we will explore the potential threats that may come your way and provide you with effective strategies to protect your Purple Oxalis against these adversaries. Learn how to keep your garden oasis thriving and free from harm.

In conclusion, the Purple Oxalis is more than just a plant – it's an experience that promises to enchant and inspire. From its stunning foliage to its ability to thrive in challenging conditions, this botanical marvel is a testament to the beauty and resilience of Mother Nature. Amazon can provide any need for Purple Oxalis. (I will receive compensation if you buy).