Is Hottentot Fig Invasive?
The hottentot fig ice plant (Carpobrotus edulis) was introduced from South Africa to California as a ground stabilizing plant. The spreading roots and groundcover nature of ice plant helped halt erosion on California’s coastal dunes. However, the plant became so naturalized that it is now classified as a weed and requires careful management to prevent it from taking over native plant habitats. The hottentot fig flowers do not turn into any verifiable fruit and it’s not related to the fig tree, so the reason for the “fig” in the name is not clear. What is clear is that the plant grows so easily and well in its new region that growing hottentot fig in USDA plant hardiness zones 9 to 11 is such a snap that it bears some consideration when used in wild erosion control.
Hottentot Fig Cultivation
Stem cutting is the fastest way to propagate this fast growing plant. Seeds are also available and you may start them indoors at least six weeks before the date of the last frost. Hottentot fig is a perennial plant in its chosen zones but also thrives as an annual in colder areas. The best temperature range for the succulent is between 40 and 100 degrees F. (4-38 C.), but some protection from the sun’s scorching rays may be required in higher temperature ranges. Growing hottentot fig in planters prevents it from spreading in those areas where that is a concern. Freezing temperatures may cause the plant to die back, but it will re-sprout in spring in temperate areas. An important part of hottentot fig cultivation in areas where it is a problem plant is cutting back the plant in fall. This will keep it in a moderate habit, allow new leaves to burst forth, and prevent seeds from forming.
Hottentot Fig Care
Ice plants are notoriously un-fussy. As long as their soil drains well, the soil is allowed to dry out between watering and the plant receives pinching or pruning to keep it in shape, there is little more to be done. The only serious threats to the plant’s health are spittle bugs and some root rots and stem rots. You can avoid the rot by minimizing overhead watering during periods in which the plant will not dry off before nightfall. The bugs will remove themselves if you spray the plant with a horticultural soap. Growing hottentot figs in containers is ideal, and you can overwinter them in temperate regions. Just bring the pot in and water it deeply. Cut back the plant and let it dry out and languish for the winter in a warm location. In March, resume regular watering and move the plant to a full light situation where it has some protection from burning rays. Gradually reintroduce the plant to temperatures outdoors until it can tolerate a full day outside.
