Maritime Eyebright
(Euphrasia tetraquetra)
Maritime Eyebright (Euphrasia tetraquetra)
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Erik Molenaar
CC BY-SA 3.0
Image By:
Erik Molenaar
Recorded By:
Copyright:
CC BY-SA 3.0
Copyright Notice:
Photo by: Erik Molenaar | License Type: CC BY-SA 3.0 | License URL: http://creativecommons.org/licenses/by-sa/3.0/ | Uploader: Rasbak | Publisher: Wikipedia Commons







Estimated Native Range
Climate Requirements for Wandsbek, Germany
This Plant | Your Site | Plant Suitability for Your Location | ||
---|---|---|---|---|
• Precipitation | 22" - 87" | 30" | Your precipitation may be insufficient for this plant. Irrigate N" / year. | Irrigate N" / year |
• High Temp. | 59°F - 84°F | 72°F | Your summer temperatures are normal for this plant. | Excellent |
• Low Temp. | -11°F - 44°F | 30°F | Your winter temperatures are normal for this plant | Excellent |
This plant should grow well at your location with about N inches per year (Y minutes per month) of irrigation.
Summary
Euphrasia tetraquetra, commonly known as Maritime Eyebright, Western Eyebright, or Square-stemmed Eyebright, is an annual herb that is native to the grasslands, heaths, and moorlands of Europe. This plant typically grows at a moderate rate to a height of 0.1-0.3 feet (0.03-0.1 meters) and is characterized by its square stems and small stature. The flowers are white or purple and bloom in the summer, providing a delicate display that is attractive to pollinators such as bees. Euphrasia tetraquetra is part of a genus known for its traditional use in herbal medicine, particularly for eye-related conditions.
Maritime Eyebright is valued for its ease of maintenance and its ability to thrive in less fertile soils, making it suitable for rock gardens, wildflower meadows, and as part of a mixed border. It is often used in cultivation for its medicinal properties and as an ornamental plant due to its charming flowers. It prefers full sun to part shade and medium to fast-draining loam soils, with medium water requirements. While generally disease-free, it can be susceptible to powdery mildew in overly moist conditions.CC BY-SA 4.0
Maritime Eyebright is valued for its ease of maintenance and its ability to thrive in less fertile soils, making it suitable for rock gardens, wildflower meadows, and as part of a mixed border. It is often used in cultivation for its medicinal properties and as an ornamental plant due to its charming flowers. It prefers full sun to part shade and medium to fast-draining loam soils, with medium water requirements. While generally disease-free, it can be susceptible to powdery mildew in overly moist conditions.CC BY-SA 4.0
Plant Description
- Plant Type: Herb
- Height: 0.1-0.3 feet
- Width: 0.1-0.2 feet
- Growth Rate: Moderate
- Flower Color: White, Purple
- Flowering Season: Summer
- Leaf Retention:
Growth Requirements
- Sun: Full Sun, Part Shade
- Water: Medium
- Drainage: Medium, Fast
Common Uses
Bee Garden, Bird Garden, Low Maintenance
Natural Habitat
Native to the grasslands, heaths, and moorlands of Europe
Other Names
Common Names: Western Eyebright, Square-stemmed Eyebright, An Eyebright
Scientific Names: Euphrasia tetraquetra, Euphrasia gracilis subsp. tetraquetra, Euphrasia gracilis var. tetraquetra, Euphrasia nemorosa subsp. occidentalis, Euphrasia nemorosa var. tetraquetra, Euphrasia officianalis subsp. tetraquetra, Euphrasia officinalis subsp. tetraquetra, Euphrasia officinalis var. tetraquetra
GBIF Accepted Name: Euphrasia tetraquetra