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“Bed sheets, drop cloths, blankets and plastic sheets make suitable covers for vulnerable plants. Use stakes to keep material, especially plastic, from touching foliage. Remove the coverings when temperatures rise the next day. For a short cold period, low plantings can be covered with mulch, such as straw or leaf mold.”
Plant protection covers. My covers were purchased in North Carolina (no current expense). The sheets came from the recent CARE Garage Sale (minimum of expense).
No wind anticipated so these covers should hold. I’d need a lot more clothes pins–or weights–if strong winds.