Scientific: Tagetes signata (syn. Tagetes tenuifolia)
Common: Signet marigold
Family: Asteraceae
Origin: Mexico to Guatemala

Pronounciation: Ta-GE-tes sig-NA-ta

Hardiness zones
All zones as annual
USDA All zones as annual

Landscape Use: Accent beding plant, herb garden, or a mixed flower garden.

Form & Character: This is an easy-to-grow herbaceous perennial that is upright and open, lacy, delicate, tropical.

Growth Habit: Moderate upright growth to 12 inches tall.

Foliage/Texture: Glossy green foliage, nearly pinntified, highly aromatic, lemon; fine texture.

Flowers & Fruits: Small, terminal, yellow or orange single daisy flowers, fruits inconspicuous.

Seasonal Color: Flowers in spring and fall.

Temperature: Tolerant of desert heat, though one MUST avoid planting this aromatic shrub in western or reflected exposures. Frost sensitive, damaged by freezes below 30oF.

Light: Full sun in mesic landscapes (with much surrounding greenry), otherwise partial shade from western sun.

Soil: Like many marigold species a well-drained, organic amended soil is needed for best performance in Phoenix.

Watering: Water nearly daily during hottest times of summer tapering to every 5 to 7 days during winter.

Pruning: Like other marigold species, lightly shear infrequently to promote a tight habit.

Propagation: Seed, easy to germinate. For established plants, allow seed heads to dry on senescing plant, then shake dead plants to release seeds onto ground for future germination in a garden site.

Disease and pests: None

Additional comments: The cultivar 'Lemon Gem' is uniform showing masses of single, lemon-yellow, small, single blooms that are positioned slightly above the plant's lacy foliage. The cultivar 'Tangerine Gem' has lovely orange flowers.