bamboo
It floats a long time ,I have some still upright put out 2 years . You might try this. Get old plastic bucket lids and drill several holes with a hole saw in a drill. I use one for drilling lock set holes in doors. Don't drill completely through. That will hold bamboo when pushed through to half way. Then wire butts together and it will fan out on tops. I wire on weights and sink it horizontally.:D For vetically placed bamboo we always concrete in buckets.:D
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