How to Grow French Marigold Plants
- 1). In mild areas, sow seed outdoors in May or after the last frost where they are to grow. For a head start, sow seeds indoors or in an outdoor cold frame 4 to 6 weeks before the last frost. Seeds germinate at 70 to 75 degrees F within 7 to 14 days.
- 2). Use any good garden soil, especially if enriched with humus and well drained. Use potting soil for planter boxes. French marigolds tolerate dry soil but prefer moist.
- 3). Place French marigolds in full sun. Space 6 to 8 inches apart.
- 4). Plant out before the first flowers open. Remove opened buds for the first couple of weeks after planting, gardening author D.G. Hessayon advises.
- 5). Water when the weather is dry and keep watch for slugs. Dead-head (remove faded and dead blossoms) to prolong the display, which will continue until first frost.
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