Contents
Description
Oxalis Grandis, also known as Giant Pink Shamrock or Giant Wood Sorrel, is a perennial flowering plant that belongs to the Oxalidaceae family. It is native to South America, particularly in Argentina and Uruguay. The plant can grow up to 1.5 feet tall and wide, with a dense clump of clover-shaped leaves and delicate pink flowers that bloom in late spring to early summer.
Taxonomic Information
| Domain| Eukaryota||————|—————|| Kingdom| Plantae|| Phylum| Tracheophyta|| Class| Magnoliopsida || Order| Oxalidales|| Family| Oxalidaceae|| Genus| Oxalis|| Species| Oxalis Grandis|
Appearance
Oxalis Grandis has a unique appearance that makes it a popular ornamental plant. Its leaves are dark green on top and purple underneath, with three heart-shaped leaflets that fold up at night or in response to touch. The leaves can grow up to 6 inches long and wide, forming a dense clump that spreads through underground stems or rhizomes. The flowers of Oxalis Grandis are pale pink to white, with five petals that form a star shape and yellow centers. The flowers bloom in clusters on long stems that rise above the foliage, creating a striking contrast.
Care Guide
Oxalis Grandis is a low-maintenance plant that requires moderate care to thrive. Here are some care tips to keep in mind:- Water: Water the plant regularly, keeping the soil moist but not waterlogged. Avoid letting the soil dry out completely or leaving standing water in the pot.- Fertilization: Feed the plant with a balanced fertilizer every two weeks during the growing season. Avoid over-fertilizing, as it can damage the roots and foliage.- Soil: Plant Oxalis Grandis in well-draining soil that is rich in organic matter. The plant prefers slightly acidic to neutral soil with a pH between 5.5 and 7.0.- Sunlight: Place the plant in a bright location with partial shade, avoiding direct sunlight during the hottest hours of the day. The plant can also tolerate some shade, especially in hot climates.- Hardiness Zones: Oxalis Grandis is hardy in USDA zones 8 to 10, but it can be grown as an annual in colder zones. Protect the plant from frost and freezing temperatures.
Common Pests & Diseases
Oxalis Grandis is relatively pest and disease resistant, but it can still be affected by some common issues. Here are some problems to watch out for:- Spider mites: These tiny pests can cause yellowing and curling of the leaves. Treat the plant with a solution of neem oil or insecticidal soap.- Aphids: These soft-bodied insects can suck the sap from the leaves and stems, causing distortion and stunting. Control them with a spray of water or an insecticidal soap.- Root rot: This fungal disease can occur if the soil is too wet or poorly drained. Avoid overwatering and improve the soil drainage. Treat the plant with a fungicide if necessary.
Habitat
Oxalis Grandis is native to South America, where it grows in open woodlands, grasslands, and rocky slopes. The plant prefers well-draining soil and moderate humidity, but it can tolerate some drought and heat. Oxalis Grandis can be grown in containers or as a ground cover in gardens, provided that the soil and light conditions are suitable.
Question and Answer
Q: Is Oxalis Grandis toxic to pets?
A: Yes, Oxalis Grandis contains oxalic acid, which can be toxic to cats, dogs, and other animals if ingested in large amounts. Keep the plant out of reach of pets and supervise them around it.
Q: Can Oxalis Grandis be grown indoors?
A: Yes, Oxalis Grandis can be grown as a houseplant in a bright location with indirect sunlight. Keep the soil moist and fertilize regularly to promote growth.
Q: How often should I divide Oxalis Grandis?
A: Divide Oxalis Grandis every 2 to 3 years, or when the clump becomes overcrowded or loses vigor. Dig up the plant and separate the rhizomes, replanting them in fresh soil.
Q: What is the best time to plant Oxalis Grandis?
A: Plant Oxalis Grandis in spring or fall, when the weather is mild and the soil is warm. Avoid planting in the heat of summer or the cold of winter, as the plant may not establish well.
Related Plants
Here are some related plants that you may be interested in:- Oxalis Triangularis: Also known as Purple Shamrock, this plant has triangular leaves that are dark purple on top and light purple underneath, with pink or white flowers.- Oxalis Deppei: Also known as Iron Cross, this plant has green leaves with a dark purple cross in the center, and pink or white flowers.- Oxalis Regnellii: Also known as Lucky Clover or Shamrock, this plant has green leaves with three leaflets and pink or white flowers.
References
– “Oxalis Grandis.” Missouri Botanical Garden, www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=287032.- “Oxalis Grandis.” Royal Horticultural Society, www.rhs.org.uk/plants/230212/oxalis-grandis/details.- “Oxalis Grandis.” University of Florida, Institute of Food and Agricultural Sciences, edis.ifas.ufl.edu/fp671.
