How to identify Corn speedwell (Veronica arvensis)

How to identify Corn speedwell (Veronica arvensis)

Corn speedwell, also known as Common speedwell, Wall speedwell

Corn speedwell is characterized by its diminutive stature and propensity to thrive in full sunlight and poorly nourished, moist to dry soils. This winter annual is recognized by its radiant, petite blue blossoms and its low-lying, branching form that facilitates the spread of its seeds. Typically found in disturbed habitats, corn speedwell may form clusters, asserting its presence in a subtle yet noticeable manner.

Lifespan: Annual, Perennial

Plant Type: Herb

Leaf Type: Deciduous

Quickly Identify Corn speedwell

Diminutive size and preference for full sunlight distinguish corn speedwell

Petite blue flowers with 4 hairy green sepals bloom mid-spring to mid-summer

Heart-shaped capsule with tiny yellow seeds, 1/8 inch (3 mm) long

Lower leaves hairy, oval-orbicular, upper leaves linear-oblong to lanceolate

Versatile stems, green, 0.08 to 0.16 inches (2 to 4 mm) thick, slight hairiness

Detailed Traits of Corn speedwell

Leaf Features

The leaves of corn speedwell vary by location on the plant. The lower leaves are hairy, yellow-green, oval-orbicular, and measure up to 3/8 inch (1 cm) long and wide. They are opposite with very short stems and have crenate margins. Middle to upper leaves are hairy, linear-oblong to lanceolate, up to 1 inch (2.5 cm) long, and alternate with smooth or slightly crenate margins and sessile. These are yellow-green to green in color.

Leaf Shape

Ovate ,

Elliptic ,

Circular

Learn About the Leaf Glossary

Flower Features

Corn speedwell features delicate blue-violet to blue flowers with a corolla composed of 4 petal-like lobes, each approximately 0.2 inches (5 mm) wide. These blooms are accompanied by 4 hairy green sepals, enhancing the flower's texture. The blossoms emerge near the apex of the stems from mid-spring to mid-summer, creating a striking display for 3-4 months. The flowers, though small, are vivid and essential for the plant's identification.

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Stem Features

The stems of corn speedwell are notably versatile, ranging from prostrate to erect forms. They feature a green coloration and are generally slender, often measuring 0.08 to 0.16 inches (2 to 4 mm) in thickness. These stems exhibit a fine, soft hairiness, contributing to a slightly fuzzy texture. The branching pattern is irregular, with occasional branches emerging from the axils. This combination of traits, including the structure and surface texture, renders the stem a distinguishing characteristic of corn speedwell.

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Fruit Features

The fruit of corn speedwell is a diminutive, heart-shaped capsule that is roughly 1/8 inch (about 3 mm) in length. This capsule encases numerous tiny seeds, which are notable for their distinctive yellow hue. The texture of the outer capsule can be described as dry and papery, which upon maturity, splits open to release the enclosed seeds. These characteristics are vital for recognizing the fruit, as its petite size and unique seed color provide essential visual cues for identification.

Learn About the Fruit Glossary

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Corn speedwell and Their Similar Plants

Spiked speedwell vs. Corn speedwell: What's The Difference?

Spiked speedwell (Veronica spicata) is a protected plant species native to the United Kingdom. This species is protected under the Conservation of Wild Creatures and Wild Plants Act. Spiked speedwell is the county flower of Montgomeryshire.

Birdeye speedwell vs. Corn speedwell: What's The Difference?

Birdeye speedwell (Veronica persica) is a plant species native to Eurasia. It has been introduced all over the world, but is generally considered to be a weed because it can adversely affect soil health. The fruit of the birdeye speedwell is roughly heart-shaped, with two lobes that angle away from each other.

Thyme-leaved speedwell vs. Corn speedwell: What's The Difference?

Thyme-leaved speedwell (Veronica serpyllifolia) is a member of the plantain family and is a perennial. It can be found in virtually every part of the globe. You'll find it growing in wet environments, whether in the woods, on a hillside, or in grassy pastures. If you want to keep it out of your yard, regularly mow and water your grass. This will create dense growth, which will limit thyme-leaved speedwell's ability to thrive.

Ivy-leaved speedwell vs. Corn speedwell: What's The Difference?

Ivy-leaved speedwell (Veronica hederifolia) is indigenous to Eurasia. Its maximum height is 6 cm, and its maximum spread is 15 cm. This species requires eight hours of sunlight per day for successful cultivation.

Veronica peduncularis vs. Corn speedwell: What's The Difference?

Veronica peduncularis is a low-growing perennial with lush, green foliage forming a dense mat. Its creeping habit is adapted to cover ground efficiently, making it ideal for rock gardens or as a border plant. In the spring, delicate blue flowers with a white center and intricate veining rise on short stalks, offering a vibrant display against the cushion of leaves.

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Key Facts About Corn speedwell

Attributes of Corn speedwell

Lifespan

Annual, Perennial

Plant Type

Herb

Plant Height

9 cm to 40 cm

Spread

15 cm to 30 cm

Leaf Color

Green

Yellow

Gold

Stem Color

Green

Brown

Leaf type

Deciduous

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Scientific Classification of Corn speedwell

Phylum

Vascular plants

Class

Dicotyledons

Order

Mints plantains olives and allies

Family

Plantain

Genus

Speedwells

Species

Corn speedwell (Veronica arvensis)

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Distribution Map of Corn speedwell

Corn speedwell is a plant that has its origins in various regions across Europe, Western and Central Asia, and North Africa. This species has spread to both North and South America, as well as pockets of Eastern Asia, Southern Africa, New Zealand, and some parts of the Caribbean. It is particularly adaptable, flourishing in a range of environments far beyond its native range.

Native

Cultivated

Invasive

Potentially invasive

Exotic

No species reported

Learn More About the Corn speedwell

A Comprehensive Guide to Corn speedwell How to Grow and Care for Corn speedwell