63-77 Days to maturity. Tagetes patula. Sparky Mixture Marigold Seeds. Non-GMO, annual, open-pollinated. Sparky Mixture French marigold seeds offer one of the most vibrant and inexpensive blooms available to the home gardener. Sparky Mixture is a familiar alternative to the traditional marigold, quickly maturing to 9-12 inches tall, boasting unique semi-doubled heads. Marigold seeds are a favorite for kids or novice gardeners because they are a low-maintenance grow, tolerant to a variety of difficult gardens. Sparky Mixture marigolds are ideal to plant along walkways, and fences, or for trimming the back of the garden. ~8,500 seeds/oz.