Oxalis 'Iron cross'
Iron cross is a popular variety of Oxalis, which belongs to the Oxalis genus (Oxalis tetraphylla 'Iron cross'). Iron cross is a variety of heirloom Oxalis . Plant 3-4" apart and 1-2" deep in full to part sun with moist, well-drained soil. They grow 10-12" tall with a medium growth rate and bloom in June through September. Flowers are rosy, some call it pink and some red, and sometimes may have yellow centers. Flowering shamrock have green clover-like foliage with purple cross shaped markings. Can be used in beds, borders, rock gardens and containers. Called “lucky clover” or “good luck plant” because it looks like clover and always has 4 leaves. Fertilize when actively growing. Can be dug up in the winter in cold zones and stored in cool, frost-free place, then replanted in spring. Leaves contain oxalic acid which can be eaten in small quantities (lemony taste), but should not be eaten in large quantities as it hinders calcium absorption by the body. Can be cooked and eaten to reduce the oxalic acid. Zones 8-10 if left outdoors, 4-7 if lifted in the fall, can be grown indoors as a houseplant.Treat as an Annual/Perennial - either as a single season plant, or a plant that can stay in your garden for many years. Iron cross is known for growing to a height of approximately 10.92 inches (that's 28.0 cm in metric) with a ground cover-like habit. This variety tends to bloom in mid summer.
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How to grow Oxalis 'Iron cross'
Hardy in ground in zone 8-10. Hardy if bulbs lifted in winter in zones 4-7.Iron cross likes a position of partial sun and remember to water moderately. Keep in mind when planting that Iron cross is thought of as tender, so it is imperative to wait until temperatures are mild before planting out of doors. The USDA Hardiness Zones typically associated with Iron cross are Zone 4 and Zone 10.
Growing Iron cross from seed
Transplanting Iron cross
Harvesting Iron cross
Oxalis 'Iron cross' information
How long does Iron cross take to grow?
These estimates for how long Oxalis 'Iron cross' takes to sprout, grow and harvest are from real observations from real gardeners, right around the world. Start logging and journaling your observations to participate!
Good Luck plant, Shamrock Iron Cross