Inca II

Marigold

70d to harvest

Sun-warmed and richly saturated, Inca II marigolds bloom in dense, double pom-poms that glow like polished amber under the garden sun. Expect a plush, velvety texture and a heady, aromatic presence that invites pollinators to linger among the flowers. Ideal for bold, long-lasting color in beds and borders, Inca II shines as a standout ornamental—thriving as a showy focal bloom from early summer into fall.

Crop Dates

Milestone	Date
Start Indoors	Apr 17th
Last Frost	May 15th
Transplant / Sow Outdoors	Jul 10th
Harvest Begins	Sep 18th
Harvest Ends	Sep 24th

Crop Details

Trait	Value
Days to Maturity	70
Sun Requirements	Full Sun
Growth Habit	Upright
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	60
Min Night Temp (°F)	50
Harden Off (days)	7

Frequently Asked Questions

What pest or disease is most likely on Tagetes erecta (African marigold) and how can I control it?

The most common issue is aphids, which cluster on new growth and can stunt plants; check stems and leaf undersides weekly, especially from late spring into early summer. Spray affected plants with a strong water jet, then apply insecticidal soap (or neem oil) in the evening, repeating every 5–7 days until aphids stop. If you see gray-brown rotting or leaf spots after humid weather, remove affected leaves and improve airflow around the plants rather than keeping foliage constantly wet.

How often should I water Tagetes erecta during the main growing phase?

During active growth, keep the soil consistently moist but not soggy: water when the top 1 inch of soil feels dry. Typically that means about 1–2 deep waterings per week in full sun, but increase frequency during hot, windy weather. Avoid frequent light sprinkling that wets leaves—water at the base to reduce disease and encourage deeper rooting.

How do I know when Tagetes erecta ‘Inca II’ is ready to harvest?

Harvest (or pick for bouquets) when the flower heads are fully developed and fully colored, with petals showing their mature form rather than looking tight and immature. For Tagetes erecta, this is usually around 70 days from planting to first bloom under good conditions. Pick in the morning after dew dries, and the plants will continue producing new flowers after each harvest.