Linaria Species, Yellow Toadflax, Bread and Butter, Brideweed, Bridewort, Butter and Eggs

Linariavulgaris

Genus
Linaria (lin-AR-ee-uh)
Species
vulgaris (vul-GAIR-iss)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
Smooth
Height
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
Spacing
12-15 in. (30-38 cm)
Hardiness
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
USDA Zone 6b: to -20.5 °C (-5 °F)
USDA Zone 7a: to -17.7 °C (0 °F)
USDA Zone 7b: to -14.9 °C (5 °F)
USDA Zone 8a: to -12.2 °C (10 °F)
USDA Zone 8b: to -9.4 °C (15 °F)
USDA Zone 9a: to -6.6 °C (20 °F)
USDA Zone 9b: to -3.8 °C (25 °F)
Danger
Parts of plant are poisonous if ingested
Bloom Color
Pale Yellow
White/Near White
Bloom Time
Mid Summer
Late Summer/Early Fall
Mid Fall
Other Details
Category
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
May be a noxious weed or invasive
Soil pH requirements
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Patent Information
Non-patented
Propagation Methods
From softwood cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Seed Collecting
Allow pods to dry on plant; break open to collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Huntsville, Alabama

Sitka, Alaska

Susanville, California

Elberton, Georgia

Chadwick, Illinois

Chicago, Illinois

Newton, Kansas

Barbourville, Kentucky

La Grange, Kentucky

London, Kentucky

Cumberland, Maryland

Oakland, Maryland

Lake, Michigan

Saint Helen, Michigan

Saint Cloud, Minnesota

Saint Paul, Minnesota

Young America, Minnesota

Dover, New Hampshire

Englishtown, New Jersey

Carmel, New York

Medina, Ohio

MOUNT HOOD PARKDALE, Oregon

Bethlehem, Pennsylvania

Ebensburg, Pennsylvania

Lehigh Valley, Pennsylvania

Millersburg, Pennsylvania

Cookeville, Tennessee

Murfreesboro, Tennessee

Cedar Hill, Texas

Salt Lake City, Utah

Kalama, Washington

Pewaukee, Wisconsin

Porterfield, Wisconsin

Pulaski, Wisconsin

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Gardener's Notes:

2
positives
2
neutrals
6
negatives
Sort By:
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C
ROSLINDALE, MA | May 2015 | negative

According to BONAP, this species is a noxious weed in at least 12 western states and has naturalized in 46 of the lower 48 states.
...Read More

O
| August 2014 | positive

Was given a start of this beautiful little plant over 25 years ago by now. Needs to be well watered here in Kansas with our brutal summ...Read More

P
P
| August 2013 | negative

Noxious weed designation in Alberta

qp.alberta.ca

D
Saint Cloud, MN (Zone 4b) | November 2007 | negative

MN DNR's website has this plant listed on the invasive list.
"Ecological Threat:
This plant has the ability to adapt to var...Read More

J
J
Belfield, ND (Zone 4a) | April 2007 | negative

This plant is listed on the North Dakota invasive/troublesome list and this information is being distributed in a guide developed by the ...Read More

J
J
Palmyra, IL (Zone 5b) | February 2007 | negative

Toadflax is Very Dangerous to Livestock,if you have live stock and it can get into your pastures,it can kill your stock...I wanted to gro...Read More

K
K
(Zone 7a) | November 2004 | positive

Very Cheery and delightful plant

N
Broadview, SK (Zone 3a) | October 2004 | negative

It is considered a noxious weed here in Saskatchewan, the local R.M. spray it where ever it is spotted. Has been spread quite extensivel...Read More

B
B
Baa
| August 2002 | neutral

A perennial from Europe.

Has grey-green, linear or lance shaped, almost hairless leaves. Bears 2 lipped, pale yellow flowe...Read More

G
Wentworth, SD (Zone 4a) | March 2001 | neutral

Well-drained, moist soil. Propogate by seed, self sows

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