From the genus name.
erica (plural ericas)
- Any of many heathers, of the genus Erica, used as garden plants
1840, John Claudius Loudon, The Gardener's Magazine and Register of Rural & Domestic Improvement:
- I have now arrived at the third year since the ericas were seedlings and cuttings; and, as much can be said in this stage of their growth applicable to future years, it is my intention to do so.
erica f (plural eriche)
- (Medieval Latin) Alternative form of ("heath, heather")