PlantsWood Sorrels→Purple Shamrock (Oxalis triangularis)

Common names:
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General Plant Information (Edit)
Plant Habit: Herb/Forb
Sun Requirements: Full Sun to Partial Shade
Water Preferences: Mesic
Dry Mesic
Minimum cold hardiness: Zone 6a -23.3 °C (-10 °F) to -20.6 °C (-5 °F)
Flowers: Showy
Flower Color: Pink
Bloom Size: 1"-2"
Flower Time: Late spring or early summer
Late summer or early fall
Other: Blooms intermittently throughout the year; some oxalis will bloom all year if given enough light
Underground structures: Rhizome
Suitable Locations: Houseplant
Uses: Groundcover
Dried Flower
Will Naturalize
Wildlife Attractant: Birds
Toxicity: Other: All plants containing oxalic acid can be toxic to humans if enough is ingested.
Propagation: Other methods: Division
Other: bulblets, tubers
Pollinators: Various insects
Containers: Suitable in 1 gallon
Miscellaneous: Goes Dormant


The Top 50 WildflowersThe Top 50 Wildflowers
By dave on October 18, 2014

It's hard to figure out which plants are wildflowers and which ones aren't, so lists like these are hard to come up with. Nevertheless, with help from our members we made a list of areas of the database that qualify, and here's the top 50 most popular species from among them!

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Posted by plantladylin (Sebastian, Florida - Zone 10a) on Sep 23, 2011 7:11 PM

I've had a Purple Shamrock plant for years and I don't even remember when or where I got it. It ended up in the soil beneath another plant on my deck and I love the pretty rosy-pink blooms. The plant naturally goes dormant at certain times but always returns to bloom again. Someone once told me that this plant prefers daytime temperatures of 75ºF or lower, but my plant lives outside year round and seems to do fine in our 90º summer temperatures.

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Posted by sallyg (central Maryland) on Apr 27, 2020 8:31 PM

Purple oxalis is a huge hit with visitors to my workplace where I keep a pot going. Many people have never seen it, nurseries don't carry it often, I suppose it would not travel well with the soft stems. But it is a pretty easy plant. It needs decent bright light to bloom. I have it planted as understory in some of my big potted tropicals where it can become pretty thick. So sometimes I unpot the big plant so I can harvest some bulbs of Oxalis. The bulbs look like odd pink scaly things, and during active growth they also have an appendage like a tiny pinkish carrot. Plant the bulbs pretty thick to fill a pot. I think warmth may help the bulbs sprout quickly, they have been slow going sometimes when I started them in midwinter hoping for St Patrick's Day plants.

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Posted by valleylynn (Oregon City, OR - Zone 8b) on Feb 21, 2012 6:15 PM

Country of origin is South America.

Zone 9 and up if growing outdoors.

At the end of the growing season, when your plants go dormant, you can dig up the bulbs and store them in dry sand or soil. Keep them in a cool, dark place until next season. You can also grow them year round indoors. When you want to replant, simply let the plants go dormant, dig up the bulbs, and replant them in fresh soil.

This plant has a triangular shaped leaf - each leaf is made up of two right triangles. This is different from some other Oxalis species that have circular leaves. The point where the three leaves meet has tiny hairs sticking out and a "hinge" where the leaves pivot their movement.

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Plant Events from our members
Catmint20906 On July 9, 2015 Bloomed
Catmint20906 On June 12, 2015 Plant emerged
lovesblooms On May 19, 2015 Bloomed
planted May 2015
thequeen770 On March 16, 2017 Plant emerged
up and blooming
piksihk On March 5, 2018 Bloomed
MotherMycelium On February 17, 2021 Plant Ended (Removed, Died, Discarded, etc)
» Post your own event for this plant

Discussion Threads about this plant
Thread Title Last Reply Replies
Perfect Plant for that planter by CDsSister Apr 12, 2014 4:32 PM 1
Help Needed With Purple Oxalis Triangularis by daphnedreams Jun 25, 2021 12:03 PM 5
Purple foliage by newgardenerSD Jan 18, 2021 1:17 PM 1
ZZ Plant Trouble - Please Help by Cibry Jul 12, 2020 1:38 PM 1
Shamrock plant unusual by tpiller71 Apr 20, 2020 4:41 PM 6
Are There Any Tall Purple or Red Houseplants? by PanPlant Mar 17, 2020 8:39 PM 7
What's the name of this plant? by ajsturmhotmailcom Oct 7, 2019 9:20 PM 8
Untitled by NightCrow Sep 21, 2019 1:23 AM 1
Mystery plant by Amoff Jul 18, 2019 5:27 AM 2
Please help it to ID this incredible plant. by _o_megatiron May 29, 2019 2:32 AM 12
What is this plant? by Taylotte Dec 1, 2018 11:25 AM 1

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