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Marigold - Nematocidal
Marigold - Nematocidal
Marigold - Nematocidal

Marigold - Nematocidal

Tagetes patula The highest amount of alpha-terthienyl in any marigold available. The trick to good success is to plant just the marigold in your target area for at least 2 or 3 months so the nematodes will only have the marigold to attach to and then die. Late summer blooming. Full sun. Self-seeding annual.

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Average Seed / oz Seed / 100' Row Average Yield / 100' Row Days to Harvest
8500 n/a n/a 60-120
Planting Season Ideal Soil Temp Sun Frost Tolerance
After Last Frost 70-80°F Full Sun Frost Sensitive
Sowing Method Seed Depth Direct Seed Spacing Seeds Per Packet
Direct Seed 1/4" 6-8" 165
Mature Spacing Days to Sprout Production Cycle Seed Viability
18-24" 5-10 Annual 2-3 years

Site Selection

Marigolds are frost sensitive annuals that prefer full sun and tolerate a wide variety of soils, including nutrient poor soils.


Direct sow outdoors in spring once the danger of frost has passed. Seed can also be started indoors 4-5 weeks before the last frost and transplanted outdoors after the last frost date. Sow seeds 1/2" deep and 3-4" apart. Seeds will sprout in 15-20 days. Thin seedlings so that mature plants are 18-24" apart.