What Tree/Shrub/Weed?

[smstonypoint]

25% Triclopyr (Garlon 4) in diesel works great for basal application on poison oak. It takes about a month but kills it dead dead dead. Crispy dead. I only have to lightly spray about 18" of the stem. So useful for plants whose leaves are 30' up in a tree and unreachable by foliar spray. I also use it on cut stumps of brush (mostly coyote brush) to kill the plant. Otherwise coyote brush resprouts within days. You have to apply it to the cut right after cutting, like within a half hour. Direct undiluted application of homeowner grade glyphosphate with a paintbrush works too.

I'm a fan of triclopyr, but it is pricey. I use undiluted 41% glyphosate to spray freshly cut stumps (e.g., Chinese privet, Bradford pear, black cherry, red maple, box elder, sycamore, etc.) and I have yet to have any regrowth from the treated stumps. Rural King sells 2.5 gallons of 41% glyphosate for $32. As I recall, the label says the 41% glyphosate can be diluted up to 50% with water or diesel for cut stump applications. IMO, 41% glyphosate is more cost-effective for cut-stump applications.

Steve