Category: Invasive
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Quick 2025 Update on Cogon in Colorado
I did a quick visit to the site of the cogon infestation that was reported in Colorado in 2023. The original article in 2023: Cogon in Colorado: An Alarming Case of Natural Reversion from the Ornamental Variety Two years after being reported and treated, the infestation of cogon still managed to show itself. It looks…
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Hiding in the shadows
Important: I am in the process of getting a replacement, but unfortunately, due to damage to my flash during the hike at the Sherpa Steps or Nordkapptrappa (North Cape Staircase), in Honningsvåg, macrophotographs taken were of subpar quality, especially when lighting was low. I was thinking that I’ve pretty much scoured my own community for…
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Cogon Grass in Colorado: Proof that Winter-Hardy and Aggressive Reversions are Possible
Imperata cylindrica (Cogon grass) in the USA exists in two divergent forms. The first is the wild type form, which is considered cold-intolerant, fairly large, very aggressive, and has uniformly green leaves. In contrast, an ornamental variety that is very cold-tolerant has reddish-green leaves and is much shorter than the wild form. It is also…
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An Unlucky Parking Lot, Clonal Lineages, and Self-Incompatibility in Imperata cylindrica (Cogongrass)
Three years ago, I chronicled the invasion of an island in a parking lot by Imperata cylindrica (cogon grass), and how the property owners removed all vegetation from the affected island a few months later. This included two trees that probably were affected by whatever herbicide they used. Throughout the years, the island had remained…