Shamrock (Oxalis) – Care

Q: Can I plant my St. Patrick’s day oxalis outside? If so what are the requirements?

A: As you note, the common St. Patrick’s Day shamrock is actually an oxalis, typically Oxalis regnellii. I have some growing under an old wheelbarrow I use as a focal point in my garden and they have been happy there for years. The leaves come out in mid-March, the blooms appear in April and then everything disappears by June. This is the natural sequence of events for this plant. Put yours where it gets a few hours of morning sun and dense shade for the rest of the day. Don’t worry if you don’t see it again until next spring.


Iowa State Extension Services

University of Florida

Dave’s Garden

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