scouringrush horsetail

The historical Fire Performance Plant Selector lists Equisetum hyemale as a wetland plant; its curated grade is not an ignition-test result. A damp planting site therefore does not establish favorable fire performance.

For a wet garden, the useful distinction is between site suitability and the source's warning. Its row describes partial sun, adaptable soil pH, high tolerance of poor drainage and medium drought resistance. It marks both native and invasive as Yes, with the specific warning that horsetail can be very invasive in warmer regions. That regional observation matters when weighing its floral-arrangement use; native status alone does not settle its suitability.

The selector places it in Landscape Zone 2, defined as 5 to 10 feet from a house in the program's high-fire-risk framework. This zone calls for a maintained lawn and fuel breaks such as paving or rock gardens, while advising against evergreens that ignite readily and burn quickly. For trees within it, mature-height clearance must be at least 10 feet vertically and horizontally from the structure, with 10 to 15 feet between crown edges. Those are tree requirements, not horsetail planting intervals.

The row's No for ladder potential without pruning does not cancel routine upkeep. Remove dead leaves, needles and twigs; prune dead, diseased and low branches in the surrounding planting; preserve horizontal and vertical separation; and water and prune to prevent deadwood buildup. Wetland tolerance, spread and fire grade remain separate selection questions.