The splendid little Oxalis deppei 'Iron
Cross' is still putting on a show as late as November, with its bright green foliage splashed in the centre with maroon. This little tender plant grows
from small corms, and has salmon pink flowers in summer and autumn. It will survive a small amount of frost, but not lower than about minus 5 degrees. I kept
mine in a pot in the greenhouse over winter last year, but we had a bad winter, and the frost killed it. I threw out the pot in spring, having checked for any
corms which may have survived, but there were none. Or so I thought! A few weeks later, about six little plants sprang up in the border! Obviously, I'd
missed some when I threw out the soil. I left them to grow on a bit, but because they were in a silly place, I dug them up and put them in a pot, where they
have done really well over the summer and autumn. This year I'm going to bring them in to the conservatory!