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Recommended Temperature Zone:
sunset: All zones as annual
USDA: 5 to 10 as annual, 9b to 10 as a perennial
Color: The flowers of wild forms
can be pink, purple, yellow, or a bicolor combination.
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.
Cultural Practices:
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.
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