|Marigold seedlings have a distinct red stem and
a red vein down the cotyledon leaves.
Aside from being pretty and easy to grow, Marigolds are inexpensive, organic pest control. Marigolds distinctive scent wards off bugs like mosquitoes and flies. I often tuck one behind my ear or run my hands and arms through the marigolds before gardening. The scent also confuses bugs that are sniffing around for plants to eat.
They are great flowers for picking because they just keep making more flowers. To get a lot of flowers they prefer at least partial sun. The ones growing in the shade tend to be kind of puny and have less flowers. The seeds are easy to save and will keep for a few years, but for best germination use them the following year. Marigolds are short enough to grow in with bulbs and look great under sunflowers. They are also small enough to sneak a few in around your vegetables to ward off pest bugs.