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Accordingly, what is the best way to store Jerusalem artichokes?

Place them in plastic bags or in a container of damp sand in a cold root cellar or basement. At 32°F and high humidity, tubers will store for 2 to 5 months. Sunchokes stored in the refrigerator in a perforated plastic bag will keep for about 10 days. Tubers of the Jerusalem artichoke do not store as well as potatoes.

Secondly, can you grow sunchokes from the store? Just plant them, really any time you can work the soil. They don't hold well in storage, tend to mold and rot, so plant them pretty fast. maybe if they are from the store. i've had a bunch in the crisper since i dug them out in the fall and they are fine.

Also Know, can you freeze Sunchokes?

After you have blanched and chilled your sunchokes or Jerusalem artichokes, you can freeze them. This is how: Sunchokes can be stored in the freezer for up to 6 months.

How do you know when to harvest Jerusalem artichokes?

Jerusalem artichokes are generally ready for harvest when the leaves die down. If you have the patience you might want to wait for the first frost as tubers harvested after they got hit by the first frost taste sweeter. In my experience the best harvest season is end of september until march.