Ensure the pot features a drainage hole at the bottom. Marigold plants are best grown from seed, as they germinate easily and are cheaper than buying ready-grown plants. Marigolds also perform best in full sun, which will keep tall plants sturdy and help form large, dense, blooms and foliage.In part shade or more, all parts of the plant are more susceptible to fungal diseases, such as powdery mildew. The brightly colored flowers can be single or double. French marigolds excel year-round while the large-flowered African types are best for spring. ... How to Care for a Marigold Plant. Tolerant of heat, drought, and pests, the marigold is about as easy to care for as they come. Avoid wetting the foliage, especially later in … Light: Marigolds like full sun with at least 6 hours of sunlight a day and are not bothered by heat. Try pairing them with plants that have dark-colored foliage to … One marigold can be kept in a 6-inch pot, although two or three will grow well in a 12-inch container. Tagetes patula, Tagetes erecta Marigolds are one of the easiest of all plants to grow and care for, making them a perfect plant for teaching young children about growing and gardening. Though Marigolds are easy to grow, some factors are to be considered when growing them: Sunlight: Marigolds can grow in full sun to partial-shade, but it is preferable to plant them in sunny locations as shading may have an adverse effect on flowering. the addition of compost and/or manures).Compost can be made at home or purchased from a garden center. Marigolds can be started from seed around 4-6 weeks before the last frost date in your area and will usually germinate within 1-2 weeks. Marigolds will grow in a wide range of soil types and conditions. If you are growing potted marigolds, take care not to crowd them. In order to ensure that your blooms are getting enough sun, you can plant your smaller plants with 12 inches of space around them and the larger, taller types with around 36 inches of space. Soil: Marigolds are not fussy about their soil, but it is always good to have soil that is well-drained and amended with organic matter (e.g. Marigolds grow best in areas that receive full sun, as shady conditions hinder their healthy development and can limit flowering. Caring for Your Marigolds Planting Marigold plants are best grown from seed. These spunky little plants are only hardy in zones 9-11 so they are normally grown as annual bedding plants. Healthy marigolds need a lot of air circulation. All they really demand is plenty of sunlight. However, take care to protect your flowers from excessive heat, especially during the summer. They take off easily from seed, either grown indoors during the winter months or sown directly into the soil when it’s warmer out. It has different care requirements of true marigolds, and the flowers are actually edible, appearing of salad dishes for decoration. The … Soil: Marigolds grow … Tagetes are at their best in the full sun. Marigolds start blooming by mid spring and continue producing As long as you plant them in areas of full sun, they should be particularly trouble-free plants. The shaded marigolds won’t bloom as heavily or may not bloom at all, because they truly need all of the energy from the sun that they can get. The marigold will grow one to two feet tall, and needs full sun. Although your marigolds take the brunt of the sun's heat, these hardy flowers prefer direct and reflected sunlight with a moist soil structure.