common snapdragon

Scientific name: Antirrhinum majus. Verified common names: common snapdragon, garden snapdragon. Family: Scrophulariaceae (the genus Antirrhinum has also been placed in Plantaginaceae in some modern classifications). Genus: Antirrhinum. Taxonomic relationships are generally within the snapdragon group of herbaceous ornamental plants.

Overall form: An erect, herbaceous plant that is generally short-lived perennial in mild climates and often grown as an annual in gardens. Plants typically produce erect flowering spikes of multiple side-by-side flowers. Typical height and habit vary by cultivar but many forms are medium-sized, upright plants.

Flowers: Inflorescences bear numerous showy, tubular, two-lipped (bilabiate) flowers. The corolla is formed from typically 4–6 fused petals creating an upper and lower “lip” and a distinctive hinged “mouth.” Flower colors commonly include shades of pink, red, yellow, white, orange and bicolors; many cultivated varieties show striking patterns and color blends. Flowers often open sequentially along the spike.

Leaves: Leaves are generally lance-shaped to oblong, with an entire margin, and arranged oppositely on the stem. Leaves may be sessile or have short petioles and are typically smooth-textured.

Distinctive features: The bilabiate, dragon-like “mouth” that can be pressed open is a key field character; the tall flowering spike with many two-lipped flowers is characteristic. Cultivars show wide variation in flower color, size and plant stature.

Seasonal variation: In temperate gardens, snapdragons commonly bloom from spring into autumn, with peak flowering influenced by climate and cultivation practices.

Growing conditions: Often found in cultivated gardens, borders, and disturbed sites; commonly grown in well-drained soils with moderate fertility. Snapdragons typically prefer full sun to partial shade and regular moisture without prolonged waterlogging.

Geographic distribution: Reported from at least 17 U.S. states, including California, Connecticut, Iowa, Illinois and Louisiana, and found in other regions where it is cultivated or has become naturalized.

Typical ecosystems: Common in garden settings, along roadsides and in waste areas where garden escapes can persist.

Pollination: Flowers are adapted for bee pollination, particularly by relatively strong bees (e.g., bumblebees) that can pry open the corolla “mouth” to reach nectar and pollen. This floral morphology tends to exclude very small insects.

Wildlife interactions: Provides nectar and pollen for bees and other large pollinators; seed dispersal is primarily by gravity and local disturbance rather than specialized animal vectors.

Conservation status: Not generally considered threatened; widely cultivated and often naturalized. Interesting facts: The common name “snapdragon” refers to the flower’s ability to open and close like a dragon’s mouth, and the floral structure is a classic example of an adaptation for bee pollination.