Arjone patagonica is very similar to Arjona tuberosa and has at times been mistaken for it. The most obvious visual difference is that it is glabrous (Arjona tuberosa is hairy)[
Arjona apressa Phil.
Quinchamalium patagonicum Spreng.
Arjona tuberosa is a herbaceous, perennial plant with one to several, branched or unbranched stems about 20cm tall growing from a fusiform rootstock. A number of oblong tubers around 20mm long are produced on small roots growing from the main root[
The plant is harvested from the wild for local use as a food.
Southern S. America - Argentina, Chile
Judging by its native habitat it should be very wind resistant and probably requires a light to medium well-drained soil in a sunny position.
Tubers - raw or cooked[
]. The oblong tubers are rather small (about 20mm long), but have a lovely sweet flavour[
Seed - we have no details for this species but suggest sowing the seed in spring in a greenhouse. When large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant out in late spring or early summer, after the last expected frosts.