Linaria Species, Roadside Toadflax

Linariaaeruginea

Genus
Linaria (lin-AR-ee-uh)
Species
aeruginea (air-oo-GIN-ee-uh)
Synonym
Antirrhinum aerugineum
Linaria melanantha
Sun Exposure
Full Sun
Foliage
Herbaceous
Smooth
Height
under 6 in. (15 cm)
6-12 in. (15-30 cm)
Spacing
3-6 in. (7-15 cm)
Hardiness
USDA Zone 9b: to -3.8 °C (25 °F)
USDA Zone 10a: to -1.1 °C (30 °F)
USDA Zone 10b: to 1.7 °C (35 °F)
USDA Zone 11: above 4.5 °C (40 °F)
Bloom Color
Pink
Red
Orange
Gold (yellow-orange)
Pale Yellow
Lavender
Medium Purple
White/Near White
Bloom Time
Mid Summer
Late Summer/Early Fall
Other Details
Category
Alpines and Rock Gardens
Annuals
Perennials
Water Requirements
Average Water Needs; Water regularly; do not overwater
Foliage Color
Where to Grow
Bloom Characteristics
Bloom Size
Other details
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
Propagation Methods
From seed; sow indoors before last frost
From seed; direct sow after last frost
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:

Anchorage, Alaska

Albany, California

Beatrice, Nebraska

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Gardener's Notes:

1
positive
1
neutral
0
negative
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C
(Zone 8a) | October 2013 | positive

Keeps flowering almost forever - here from May and in October there are still flowers on one or two plants. I cut them back sequentially...Read More

B
B
Baa
| August 2002 | neutral

A small perennial from Spain and Portugal.

Has linear, grey green leaves. Bears 2 lipped, small snapdragon like flowers wi...Read More

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