Dalmatian toadflax
Discuss this plant with the guide — choose this profile as a possible match and prepare your observations for Colorado Plants & Practical Care.
Linaria dalmatica
Colorado noxious weed · List B — Stop the spread. J-dalmatian-toadflax
Established in some areas. Requirements vary by location: eradication, containment or suppression to stop further spread. This is a management category, separate from danger ratings. Category source · What the lists mean.
Spreads from roots; livestock concern. Native status, garden use and noxious-weed class are separate from toxicity. Exposure help.
Identification caveat: Distinguish the two toadflaxes by leaves as well as flowers. A snapdragon-like bloom is not evidence of garden suitability.
Still researching this plant
This is a sourced working profile. Evidence is incomplete for People, Dogs & cats, Other animals. Identification and source-photo limits are explained below. Independent botanical and veterinary review is pending. Uncertainty is not a finding that the plant is safe.
Three views of this plant
Photos are source-identified examples, not a complete identification key. Check leaves, stems, flowers and fruit together. Locations are not assumed to be in Colorado.
Walter Siegmund (talk) · CC BY-SA 4.0
Photo source and identification
Original record · Original image
Source page scientific identification plus visual morphology review of the selected photograph. This is a source-identified reference image, not a specimen-based taxonomic determination.
Wikimedia server-resized derivative; no crop, color change, or generative editing. Gallery display preserves the full image; the catalog preview uses a CSS crop.
milan_chytry · CC BY 4.0
Photo source and identification
Original record · Original image
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Source page scientific identification plus visual morphology review of the selected photograph. This is a source-identified reference image, not a specimen-based taxonomic determination.
Wikimedia server-resized derivative; no crop, color change, or generative editing. Gallery display preserves the full image; the catalog preview uses a CSS crop.
viridian · CC0
Photo source and identification
Original record · Original image
,_Brela,_Croatia_2.jpg){kind=link}
Source page scientific identification plus visual morphology review of the selected photograph. This is a source-identified reference image, not a specimen-based taxonomic determination.
Wikimedia server-resized derivative; no crop, color change, or generative editing. Gallery display preserves the full image; the catalog preview uses a CSS crop.
Recognize
Yellow snapdragon-like flowers with long spurs; broad, waxy, heart-shaped leaves clasp the stems. J-dalmatian-toadflax
Plants & habitat
A perennial spreading by roots and seed. Root fragments can form new plants; repeated casual digging or mowing is unlikely to solve an established patch. J-dalmatian-toadflax
People
Human ingestion effects were not established in this review. This is an evidence gap, not proof of safety.
Dogs & cats
Species-specific ingestion effects and exposure thresholds were not established in the reviewed sources. This is an evidence gap, not proof of safety.
Other animals
The county reports possible livestock toxicity. Grazing is not recommended as a simple control method; pet safety cannot be inferred from this warning. J-dalmatian-toadflax
Before taking action
Confirm the scientific name before removing a plant, changing animal access, or choosing treatment. An evidence gap means this review has not resolved the question. It does not mean safe. For listed weeds, consult your county weed program about the requirements for your location; follow the current label for any pesticide. S27
References
- J-dalmatian-toadflax — Dalmatian Toadflax, Jefferson County, Colorado. Accessed 2026-09-07T00:27:22+00:00. Locator: Description, impacts, Colorado list designation, management.