My horsetails are turning orange

Question

Can you tell me why my horsetails ar turning orange? They are planted in containers and I do keep them wet.
Thank you

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Answer 1

Those are just old canes. They will need to be pruned out as they die. These are very prolific and will replace themselves very quickly. This article will help: https://www.gardeningknowhow.com/edible/herbs/horsetail/horsetail-herb-growing.htm