The pelargoniums are not my only houseplants to bloom in winter. The oxalis triangularis does well indoors. I water as frequently as the bonsai. Soon, it will need a larger pot.
Pink Wood-Sorrel (Oxalis debilis)
Discovered growing on a vacant lot on Via Ponte Marmoreo in Paestum, Salerno, Italy.
A common yellow wood-sorrel to be added soon to this Spark.