A snake doctor is not always a person who goes around curing sick snakes. Snake doctor is a local name for an insect. Some people also call this fellow a snake dragon. Others may call any kind of dragonfly a snake doctor. This is very confusing.
1 Though they grow in almost any soil, marigolds thrive in moderately fertile, well-drained soil. 2  Sow them directly into the garden once the soil is warm, or start seeds indoors about a month to 6 weeks before the last spring-frost date.3  The seeds germinate easily, but watch out for damping off if you start them inside.hen fertilize lightly with a balanced plant food. It may take a week or two for the marigolds to recover but they should be fine. Next year, if you grow marigolds, you really want to pinch or cut back the new buds and foliage tips when they are 6 to 78 inches tall.
Types of Marigolds. There are numerous varieties of marigolds, but most can be broken down into three major groups. The African marigold varieties can grow up to 3 feet tall and have flowers that are 3 1/2 inches across.The French marigold is generally around or under 1 foot tall with flowers that are about 2 inches across.These two groups have been cross-bred to create a third group called the triploids. Triploids can grow a little taller than 1 foot high and have flowers about 2 inches across.he French marigold is generally around or under 1 foot tall with flowers that are about 2 inches across. These two groups have been cross-bred to create a third group called the triploids. Triploids can grow a little taller than 1 foot high and have flowers about 2 inches across.