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Purple toadflax
Also known as: Prostrate toadflax
Purple toadflax (Linaria purpurea) is a herbaceous perennial that can grow to 91 cm tall. It blooms in summer with delicate snapdragon-like violet flowers that grow along a stem. Forms clumps and self-seeds to produce more flowers each year. Thrives in full sun with dry to medium well-drained soil.
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Perennial, Annual
Lifespan
Herb
Plant Type
Late spring, Summer, Fall
Bloom Time
30 cm to 70 cm
Plant Height
20 cm to 30 cm
Spread
Green, Gray, Silver
Leaf Color
9 mm to 1.3 cm
Flower Size
Purple, Pink, Violet, White
Flower Color
Green, Gray, Silver, Purple
Stem Color
Winter dormancy
Dormancy
Deciduous
Leaf type
20 - 35 ℃
Ideal Temperature

Images of Purple toadflax

Distribution of Purple toadflax

Distribution Map
Purple toadflax originates from Southern Europe and is acclimated to temperate regions. Its range has expanded considerably, as it has been introduced to various parts of Northern and Western Europe, South America, and select Oceanian locales. This species is often cultivated, reflecting its ability to thrive across a broad spectrum of climates beyond its native habitat.
Native
Cultivated
Invasive
Introduced
No species reported
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Hemisphere Trend Curve
Flowering
Fruiting

Culture

Garden Use
Consider choosing purple toadflax for pollinator-friendly gardens and cut flower gardens. Bees and butterflies are especially attracted to its tall floral spikes. In addition, this plant quickly adapts and spreads, adding color to gravel garden sites that get full sun.
Interesting Facts
Many gardeners just love purple toadflax because of its ability to attract various types of insects. Its nectar is particularly attractive to bumblebees, but bees and moths, as well. Some species of the Lepidoptera moths feed on Linaria purpurea during their larval stage.
Name Story
Prostrate toadflax||Purple toadflax: The common name purple toadflax has gained its name from the appearance of its long, narrow leaves. Some say that those leaves resemble the leaves of the flax flowers, while others say that they look like a toad's face.
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Cultivars

There are several recognized cultivars of Purple toadflax, including the following common varieties :

Toxicity

Purple toadflax is toxic to humans, cats, and dogs through ingestion, causing symptoms like gastrointestinal distress and liver damage due to pyrrolizidine alkaloids. All parts of the plant are hazardous. Pet owners should prevent access and seek immediate veterinary care if poisoning occurs.
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RELATED: Toxicity of Purple toadflax

Care Guide for Purple toadflax

Every week
Water
Full sun
Sunlight
20 - 35 ℃
Ideal Temperature
Garden Soil
Soil Type
Water: Purple toadflax thrives in dry, low-humidity climates and prefers weekly watering to prevent oversaturation. Typically found in rock gardens, it benefits from natural rainfall but needs careful hydration during droughts. Its resilience across temperature ranges makes it a versatile garden addition.
Fertilize: For optimal growth, fertilize purple toadflax with balanced nutrition in spring and high phosphorus pre-flowering. Apply monthly during active growth, adjusting rates for size and soil. Water after application to prevent root burn. Reduce feeding in dormancy to avoid excess nutrients; seasonal adjustments promote vitality and flowering.
Pruning: Purple toadflax features tall, spiky flower spikes and narrow gray-green leaves. Regular pruning in early to late spring promotes continuous blooming by removing spent flowers and controlling height. Dead or damaged stems should be pruned promptly to enhance air circulation and invigorate growth.
Propagation: Purple toadflax is a perennial with slender violet flower spikes, thriving in well-drained soil and sunny spots. Sow seeds thinly for optimal growth, keeping soil moist until germination. Once seedlings are established, transplant them, ensuring enough space for maturity.
Repotting: Repot purple toadflax in early spring every 2-3 years in a slightly larger container with good drainage. After repotting, place purple toadflax in a sunny location and water sparingly until new growth appears, as it benefits from attentive care despite its resilience.
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