Blue Toadflax (Nuttallanthus canadensis)

Common names:
Give a thumbs up Blue Toadflax
Give a thumbs up Canada Toadflax
Give a thumbs up Old-Field Toadflax

Botanical names:
Nuttallanthus canadensis Accepted
Linaria canadensis Synonym

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Annual
Sun Requirements: Full Sun
Full Sun to Partial Shade
Partial or Dappled Shade
Water Preferences: Mesic
Dry Mesic
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 11
Plant Height: 10 - 20 inches
Plant Spread: 4 inches
Flowers: Showy
Flower Color: Lavender
Bloom Size: Under 1"
Flower Time: Late winter and early spring
Late spring or early summer
Other: mid winter
Suitable Locations: Xeriscapic
Wildlife Attractant: Bees
Resistances: Drought tolerant
Miscellaneous: Tolerates poor soil


Posted by terrafirma (Jacksonville, Fl. - Zone 9a) on Aug 23, 2014 12:29 PM

A beautiful little herbaceous wildflower. A native annual, to 24 inches in height, with linear leaves. The flower is blue, 1/2 inch, 2 lipped. The upper lip is 2 lobed, while the lower is 3. It grows in open ruderal, and is not picky about the soil moisture. Will grow in moist or dry sandy soils.

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Discussion Threads about this plant
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SE USA wildflowers, 2015 by purpleinopp Mar 22, 2016 8:19 PM 26
Can you add a weed forum? by keithp2012 Aug 14, 2014 10:11 AM 36
Delicate light purple wildflower by dave Apr 5, 2014 3:37 AM 13

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