Oxalis triangularis Oxalis triangularis, commonly called the Purple Shamrock, is an eye-catching ornamental plant admired for its triangular, deep-purple leaves and delicate pale pink to white flowers. A member of the wood sorrel family, this stunning variety provides vivid color, movement, and charm to garden beds, containers, and indoor displays. Its nyctinastic habit—folding leaves at night and reopening at sunrise—adds a dynamic element to your space. Whether you're cultivating it outdoors or as a houseplant, it delivers beauty, versatility, and ease of care year after year. USDA Zones: 7–10 Bloom Time: Spring–Summer Height: 5" Planting depth/Spacing: 1”/6” Deer Resistant: No Sun Requirements: Sun To learn more about the bulbs’ upkeep and maintenance, please visit our blogs and videos below. Perfect for containers, window boxes, and sunny garden borders, it adds rich color and contrast to any setting. Indoors, it thrives in bright, indirect light, where its captivating foliage can be enjoyed year-round. Key Characteristics and Benefits of Oxalis Triangularis Striking Coloration: Triangular purple leaves bring dramatic visual interest to your garden or home. Responsive Growth: Leaves open and close daily in response to light, offering unique movement and intrigue. Prolonged Blooms: Enjoy delicate, cheerful flowers from spring through summer. Edible Leaves: When consumed in moderation, the leaves add a tart, lemony flavor to salads and dishes. Low Maintenance: Drought-tolerant and adaptable, making it ideal for gardeners of all skill levels. Growing Oxalis Triangularis Plant bulbs or tubers in spring after the last frost has passed. Position them 1 inch deep and 6 inches apart in well-drained soil. This sun-loving plant thrives with direct sunlight outdoors or bright light indoors. In USDA zones 7–10, it can remain in-ground year-round; in cooler zones, bring indoors during dormancy or overwinter tubers. Climate and Soil Requirements Oxalis triangularis prefers loose, well-draining soil and sunny conditions. Use a sandy or peat-based mix when growing in pots to prevent root rot and ensure healthy development. Sunlight and Watering Provide full sun exposure outdoors or bright, indirect light indoors. Water when the top inch of soil becomes dry, and reduce watering significantly when the plant enters dormancy in fall or late summer. Care and Maintenance Remove spent flowers and yellowing leaves to encourage continuous growth. If your plant becomes dormant, simply allow it to rest in a cool, dry location and resume watering when new growth appears. Multiple Trusted Brands at Grow Organic At Grow Organic, we proudly offer Oxalis Triangularis through a curated selection of top-tier brands. With multiple high-quality sources, you gain access to a diverse collection of oxalis seeds and bulbs to suit your region, style, and growing preferences. Edible and Herbal Notes Though primarily ornamental, Oxalis triangularis leaves are edible in small amounts and deliver a tangy zest reminiscent of lemon. Use fresh leaves to add color and flavor to garnishes, salads, or cocktails. Note: High consumption is not advised due to oxalic acid content. Want to learn more about growing bulbs like Oxalis? Visit our in-depth Flower Bulb Growing Guide for expert tips and seasonal advice. Enhance your seasonal color displays, attract pollinators, and enjoy graceful motion with the easy-to-grow Oxalis triangularis. Explore more seasonal favorites in our Pollinator Flower Collection today!
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