Oxalis Triangularis "Purple Shamrock"
With its stunning and eye-catching purple foliage, Oxalis triangularis or Purple Shamrock is sure to be the star of the show wherever placed indoors.
Oxalis prefer bright indirect light. They can tolerate some direct sun.
Cool to average (55-65F) nighttime temperatures are good, and not warmer than 75 during the day.
If planting into the garden space them 12 to 15 inches apart. If planting into a container allow for adequate air ventilation on deck or patio.These will grow up to maximum of 6 to 8 inches tall and 12 to 15 inches wide.
Water the plants thoroughly letting the excess water drain through the bottom of the pot. Be sure to keep excess water out of any tray underneath pot. Keep moist, during the spring and summer repeating twice a week all summer long. Water less in winter allowing the soil to dry a little.
Oxalis are not heavy feeders. You can feed every 2 weeks in the spring and summer with a balanced liquid fertilizer diluted in half.
Partial or full shade is best in summer. In the winter inside the home, bright light is sufficient.
They will bloom in summer through fall. In the home where kept warm they may bloom some in the winter.
They should be groomed after each major flush of blooming. Just cut away the old flower stems leaving the leaves alone. This really stimulates them to re-bloom even off season. For heavier pruning, these can be pruned completely to the soil level at anytime their foliage turns brown. They will rest for about 4 to 6 weeks and start right back up.