General advice is to keep them watered and earth up the stalks as they grow. There’s no doubt you’ll get a larger harvest, with larger tubers if you do. However, I’ll admit that I neglect mine shamefully, even in dry spells, and never earth up, yet I still have more than I ever need.
Because they grow so tall (easily reaching ten feet or more), the plants can suffer wind-rock, or overshadow other crops. If this is likely to happen, cut stalks down to around 4 feet (120 cms) high in mid-summer. This will make them bush out and creates more compact plants. It also discourages flowering (which begins in autumn) and, instead, encourages them to put their energy into growing bigger tubers.
Their flowers provide some late nourishment for insects at a time when many flowers have long gone, though, so rather than cutting them back, you could corral them with deeply set canes and wires, so that they don’t wave around over the bed.
This planting is in the Potager Upper West garden .
Gift from Essendon cook shop.
Latest Milestone Consumed
Look to ensure a distance 11.7 inches (30.0 cm) between seeds when sowing - cover at a depth of at least 3.9 inches (10.0 cm) deep if you are going to sow this directly in the garden.
normally grows to a max height of 8.12 feet (that's 2.50 metres metric) so ensure you have enough space in your garden for this plant.
Jerusalem artichoke tends to enjoys a full sun position, which is ideal for your garden's sun profile.
Try to apply water fairly sparingly.
Your garden's USDA Hardiness Zone (10) is not within the ideal known range for Jerusalem artichoke. The recommended range is between Zone 4 and 9. You may have to reassess this planting for suitability in your garden.
More information about helianthus tuberosus Jerusalem Artichokes is available in the Folia gardener's wiki. All helianthus tuberosus Jerusalem Artichokes Care Instructions have been kindly provided by our members.