Shamrock Plant
Botanical Name: Oxalis Regnelli or Triangularis
Light:
Bright indirect light is best to grow well and produce flowers. They can often bloom all winter if kept in a sunny spot.
Water Requirement:
Keep the soil barely moist but never soggy; allow the top 2” of soil to dry out before watering. It’s best to water from the bottom so that the thin fragile stems of the plant don’t get water logged and the soil stays loose.
Fertilizer:
Feed only when the plant is actively growing or blooming (Spring + Summer).
Growth Habit:
NEED
Noteworthy Characteristics:
The nickname Shamrock comes from the three thin, triangular leaflets that look like a lucky clover plant. It is also credited with the arrival of spring and as a symbol for the “season of rebirth”.
Oxalis Regnelli, green leaved, has small delicate white flowers.
Oxalis Triangularis, or false shamrock plant, has dark purple leaves and pinkish lavender flowers. Although not reliably hardy here in the midwest they do well as a nice accent plant with other shade loving annuals in container combinations.
Pro Tips:
There is a resting period. After blooming, the leaves turn yellow, droop, and should be pulled off. Stop watering and move your plant to a cool low light area. Green varieties need to rest for 2-3 months; purple about a month. After your shamrock plant has rested , move it back into bright indirect light and water as usual.