Plant Passport
Purple Shamrock
Oxalis triangularis
LightBright
Water7-10d
PetCheck
PP OXAL ISTR IANG
Issued 2026 · Valid while cared for
Purple Shamrock
Paarse klaverzuring
Oxalis triangularis
Also known as Oxalis regnellii var. triangularis
“I fold myself to sleep and may vanish for a rest, then return from bulbs.”
colorful foliagefloweringcompactbright windowsmall space
- Light
- Bright light
- Water
- Let dry between waterings
- Pet safety
- Mildly toxic
- This month
- Finish the strongest growth flush with one more light feed. Review support or pruning needs for the rosette shape before tired leaves hide pests Cue: Purple triangular leaflets that fold at night.
August care tip
Finish the strongest growth flush with one more light feed. Review support or pruning needs for the rosette shape before tired leaves hide pests Cue: Purple triangular leaflets that fold at night.
Quick Care Summary
- Light
- Bright light
- Water
- Let dry between waterings
- Placement
- Best in a bright windowsill with gentle sun and a pot that can dry between waterings.
- Temperature
- 10–28°C
- Humidity
- low
Free printable Plant Passport card
Print, cut, and place this Purple Shamrock card in the pot. Add the physical card if you want the finished version.
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Plant Passport
Purple Shamrock
LightBright
Water7-10d
Botanical stake card
- Format
- 150 x 25mm
- Best for
- Slim plant stakes and gift pots
Use the card section above when you are ready to download or add a printed card.
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View holders →Detailed Care Guide
Watering Method
Water carefully and let the pot dry clearly before watering again; never leave the pot standing in water.
Soil Mix
Light potting mix with perlite; terrarium types need moisture without stagnant roots.
Repotting
Repot or refresh in spring; short-lived colourful plants can also be restarted from cuttings.
Pruning
Pinch tips regularly for a fuller plant and remove spent flowers or weak stems.
Pot Preference
A pot with drainage; small colourful plants often prefer a snug pot.
Fertilizing
Feed lightly every 3-4 weeks from April to September; fast plants respond to regular weak feeding.
Draft Sensitivity
Keep above 10 C and away from cold draughts.
Sources consulted
- powo.science.kew.org
- www.aspca.org
- www.rhs.org.uk
Room Placement
Window Direction
East, west or filtered south with strong brightness.
Best Room
bright windowsill with gentle sun and a pot that can dry between waterings
Monthly Care Calendar
Aug (now)
Finish the strongest growth flush with one more light feed. Review support or pruning needs for the rosette shape before tired leaves hide pests Cue: Purple triangular leaflets that fold at night.
Sep
Start reducing fertilizer and stretch watering as nights cool. Move Purple Shamrock closer to the brightest indirect position before autumn light drops Cue: Purple triangular leaflets that fold at night.
Oct
Stop feeding and prepare for heating season. Keep temperature steady and avoid cold drafts Cue: Purple triangular leaflets that fold at night.
Nov
Winter risk check: test soil before watering, inspect purple triangular leaflets that fold at night, and keep the pot draining freely while growth slows Cue: Purple triangular leaflets that fold at night.
Watering Schedule
- Summer
- Every 8 days
- Winter
- Every 16 days
Feel the mix and let the pot dry clearly before watering again.
Common Problems
Propagation
stem cuttings in waterstem cuttings in soileasyspring
Take small cuttings with at least one node during active growth and keep them warm and lightly moist until rooted.
Pests & Diseases
Aphids
Early signs
Clusters on tender new shoots and sticky residue.
Treatment
Rinse off and repeat treatment weekly while pruning weak tips.
Spider mites
Early signs
Fine webbing and pale speckles on dry stressed foliage.
Treatment
Raise humidity where appropriate and treat repeatedly.
Buying Tips
Choose Purple Shamrock with compact fresh growth and no grey mildew, sticky residue or collapsing stems.
Frequently Asked Questions
Fun Facts
Purple Shamrock is easiest to keep attractive when you renew it before old stems become tired.
Origin & Natural Habitat
Warm, bright habitats where moisture is present but air still moves around soft growth.
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