Jerusalem Artichokes Growing Guide
Jerusalem artichokes are easy to grow and require little maintenance. They are a type of sunflower that produces underground tubers for harvesting from late autumn through winter. They are very hardy and originate from North America. Tubers have a nutty flavour and can be used similarly to potatoes. They can be grown in the ground or in large containers.
This guidance applies to the crop in general. Individual varieties and local conditions can differ.
Planting information
Plant tubers 10-15cm deep and 30cm apart in rows or staggered rows. If access between rows is needed, space them at least 1m apart; otherwise, rows can be as close as 30cm for block planting. Tubers can be planted from late winter to mid-spring. Water well after planting. For container growing, use a pot at least 45cm wide and deep, planting tubers 10-15cm deep in peat-free multi-purpose compost. Young plants started in pots outdoors can be transplanted to the ground in late spring.
Harvesting information
Harvest 10 or more tubers per plant from late autumn onward by digging them up with a garden fork as needed. Tubers do not store well once harvested, so it's best to leave them in the ground until required, even through winter. Frost is believed to improve their flavour. Ensure all tubers are removed if you do not wish for them to regrow.
Storage information
Tubers do not store well indoors once harvested; they are best kept in the ground until needed throughout winter. In colder regions, cover the ground with cut stems, a thick mulch, or other insulation like cardboard to prevent freezing and facilitate digging.