Nicholas (weeds on Mount Royal, yarrow)
Yarrows (Achillea millefolium) are common weeds from the Asteraceae family. They typically grow in temperate regions in North America, and inhabit the phylogenetic tree of the Genus Achillea. One unique adaptation of yarrows is their thick stem cuticle and vast root system which allows them to grow in poor soil, low in nutrients.
An adaptation of most weeds is that they have extreme fire and drought resistance, which allows them to persevere in rough areas that are free of competitors.
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