Prefers a moist soil with a pH between 6.5 and 7.5. Plants are hardy to about -30°c. The stems of this species were once exported to Britain in quantity from Holland so that they could be used as an abrasive for cleaning pots and pans. Plants have a deep and penetrating root system and can be invasive. If grown in the garden they are best kept in bounds by planting them in a large container which can be sunk into the ground.
Strobil (the fertile shoots in spring) - cooked. An asparagus substitute. Caution is advised, see the notes above on toxicity. Roots - dried and then cooked. A source of starch. Caution is advised, see the notes above on toxicity. A further report says that the peeled stems, base of the plant, root and tubers were eaten raw by the N. American Indians, the report went on to say that this may be inadvisable.
Spores - best collected as soon as they are ripe in the spring and surface-sown immediately on a sterile compost. Keep moist and pot up as soon as the plants are large enough to handle. Very difficult. Division. The plants usually spread very freely when well sited and should not really need any assistance.
Shady streambanks etc, to 500 metres.
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