Last Updated on July 10, 2025 by Brian Beck
🌾 Top 20 Weeds in Colorado Springs & What They Indicate
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Crabgrass (Digitaria spp.) — Indicates compacted or bare soil and light, frequent watering
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Goosegrass (Eleusine indica) — Similar conditions as crabgrass
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Foxtail (Setaria spp.) — Warm-season annual; thrives in thin, compact lawns
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Annual Bluegrass (Poa annua) — Prefers cool, damp compaction areas
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Dandelion (Taraxacum officinale) — Indicates low calcium and compaction
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Lamb’s Quarters (Chenopodium album) — Shows up in disturbed, low-diversity soil
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Bindweed (Convolvulus arvensis) — Deep-rooted, thrives in poor soil structure
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Canada Thistle (Cirsium arvense) — Indicates nutrient-rich, disturbed soil
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Curly Dock (Rumex crispus) — Prefers wet, compact soil
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Purslane (Portulaca oleracea) — Signals disturbed, compacted soil
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Kochia (Kochia scoparia) — Appears in disturbed or construction areas
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Common Mallow (Malva neglecta) — Prefers compacted, nutrient-poor sites
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Creeping Woodsorrel (Oxalis corniculata) — Likes acidic, compact soil
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Groundsel (Senecio vulgaris) — Thrives in cool, moist, compact soils
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Spear Thistle (Cirsium vulgare) — Indicates disturbed ground with nitrogen
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Buffalobur Nightshade (Solanum rostratum) — Disturbed, dry soil
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Field Bindweed (Convolvulus arvensis) — Deep rooting, resistant in poor soils
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Tall Waterhemp (Amaranthus tuberculatus) — Wet, nutrient-rich, disturbed soil
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Bindweed species (multiple) — Deep-rooted, thrives in disturbed environments
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Thistle species (Cirsium spp.) — Various, indicate nutrient imbalance
⚙️ What This Means for Your Lawn
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Weeds reveal your soil deficiencies: compaction, nutrient imbalance, poor drainage, low microbial activity, and disturbance.
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Instead of only treating symptoms (pulling weeds or spraying chemicals), addressing underlying soil health will naturally reduce weed pressure.
✅ How to Act on This Insight
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Test Your Soil – Identify compaction, pH, nutrient levels.
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Loosen and Restore – Core-aerate to alleviate compaction; add organic matter for structure.
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Balance Nutrients – Target low calcium, magnesium; correct pH levels.
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Reestablish Biology – Use microbial inoculants and compost to drive long-term restoration.
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Monitor Weed Indicators – Track which weeds appear and take soil-based action accordingly.
🧠 Final Takeaway
Weeds aren’t random invaders—they’re messages from your lawn’s foundation. Once you decode what each species is telling you, you can stop chasing weeds and start restoring balance.
Would you like a visual infographic summarizing these top weeds and what they mean?