Unique Characteristics of Iron Cross Oxalis
Oxalis tetraphylla, commonly known as Iron Cross Oxalis, is a distinctive, four-leaf plant admired for its vibrant green foliage marked by a deep purple cross at the center of each leaflet. This compact-growing beauty produces delicate pinkish-red flowers, creating a stunning contrast against its uniquely patterned leaves. Whether grown indoors as a houseplant or outdoors in garden beds and containers, this variety is an easy-care, ornamental favorite among plant lovers.
Plant Profile
-
Scientific Name: Oxalis tetraphylla (syn. O. deppei)
-
Common Names: Iron Cross, Good Luck Plant, Wood Sorrel
-
Family: Oxalidaceae
-
Native Range: Mexico
Iron Cross Oxalis Care Guide
-
Light: Prefers bright indirect light to full sun; tolerates partial shade.
-
Water: Allow the top inch of soil to dry between waterings; water less in winter during dormancy.
-
Soil: Well-draining soil with a slightly acidic pH (5.5 - 6.5) is ideal.
-
Humidity: Moderate 40-60% humidity levels are preferred.
-
Temperature: Thrives in 60-75°F (15-24°C). Protect from frost.
-
Feeding: Use a balanced, water-soluble fertilizer (10-10-10 or 20-20-20) monthly during the growing season.
-
Propagation: Easily propagated by dividing bulbs/corms.
-
Pests: Generally resilient but may attract aphids, spider mites, or mealybugs.
-
Toxicity: Mildly toxic to pets if ingested in large amounts due to oxalates. Edible for humans in moderation.
Fun Fact: A Lucky Charm with a Twist
Iron Cross Oxalis is often associated with good fortune, much like a four-leaf clover. While not a true clover, its four-leaf pattern and unique coloration make it a popular gift plant symbolizing luck, prosperity, and happiness.
History: A Cultivar Rooted in Mexico
Native to Mexico, Iron Cross Oxalis was introduced to the horticultural world in the late 19th century and quickly gained popularity for its distinctive foliage and ornamental appeal. Over time, it became a beloved addition to both gardens and indoor spaces, thriving in containers, hanging baskets, and shaded landscapes.
Want Expert Tips to Keep Your Oxalis Thriving?
Check out our comprehensive Oxalis Care Guide to get in-the-know about our favorite tips, tricks, and techniques on how to keep your lucky shamrocks happy as can be!
