Snapdragon

Scientific Name: Antirrhinum majus L.
Family: Scrophulariaceae

Recommended Temperature Zone:
Sunset®: All zones as annual
AHS: 12-1
USDA: 5-10 as annual, 9b-10 as a perennial

Frost Tolerance: Cold season annual in Phoenix, although it is sometimes possible to keep them alive over the summer, if they get enough water and shade

Heat Tolerance: They tend to stop blooming, look ragged in September when they start growing again.

Sun Exposure: Full sun, in hot summer areas, light shade is needed

Origin: Mediterranean basin

Growth Habits: Perennial generally used as hardy or half-hardy annual, up to 3 feet (90 cm) depending on variety, the dwarf types are up to 12 inches tall (30 cm).

Watering Needs: Regular water, keep the soil evenly moist.

Propagation: Seeds in spring or early fall (early fall in Phoenix)

The genus name 'Antirrhinum' comes from the Greek for 'nose-like'. Depending on the variety, snapdragons can be low and mound forming or tall. The low-growing cultivars are good edging plants.

Culture:
Plant 1 foot apart (30 cm). Deadhead to promote more flowers. Orange spots under the leaves are sign of rust. Treat with systemic fungicide, or prevent by avoiding keeping the leaves humid. Rust is particularly a problem in winter, and it is one of the reasons that snapdragons are grown as annuals.

Propagation:
Sow indoor at 60°F (16°C). Do not cover the seeds. Set outside at 8 weeks old after the last hard frosts.