Amazon offers Oxalis Triangularis Purple Shamrocks 20 Bulbs for . Eligible for free super saver shipping. 

Product Description:
This is a very easy foliage plant to cultivate and maintain. Purple clover is very long-lived, non-invasive and a good choice for containers, borders or indoors. It is excellent as a ground cover in mild winter areas.

• Care is very easy
• Provide a bright location with an hour of either morning or evening sunlight throughout the year.
• Prevent droughts of any length throughout the growing periods.h throughout the growing periods.