The calendula is also known as the pot marigold. It comes in shades of yellow and orange. While this plant is a prolific bloomer, it will also reseed itself. In doing so, you need to make sure your really want the pot marigold in the location that you have chosen.
To begin the process, one needs to first select a shallow container by which you can start your seeds. After you have your container, you will need to sterilize it. The reason for this is that there is a lot of plant disease on containers. Planting into a dirty container can expose your seeds and seedlings to plant disease. While you may want to take the chance, doing this can decrease your chances of success. So, if you want to sterilize your container continue reading.
The first step in this process is to run some water in a bucket. Add a capful of bleach. Once that is done, place your container in the bleach water and soak for a few minutes. After that time period, scrub off any dirt, rinse in clear water and set aside to dry.
Once the container has dried, the next step is to fill the container with an all-purpose planting medium. To settle the soil, gently tap the container on a hard surface.
The next step is the planting process. To plant calendula seeds is easy and starts with opening the packet. Sprinkle the soil surface with the seeds. If you do not want to have to thin them, pull out the ruler and lay it on the soil. Next, plant the seeds every ½ inch. Regardless of how you plant the calendula seeds, you will then need to cover them with 1/8 inch of soil.
Since these seeds germinate better in an area that does not receive sunlight, move them to the proper location. Once the container is in the proper location, mist the soil.
Continue to monitor the soil moisture and do not allow the soil to dry out. In 7 to 14 days, you should begin to see little green dots on the soil surface. After that happens, move the container to a sunny location. Keep the seedlings in this container until they are 1 to 2 inches tall.
At this point, move the seedlings into their own containers. Keep them inside until your local frost free date has passed.
Once your local frost free date has passed, move your seedlings outside to harden off for a week. After that, move your seedlings to their garden space and plant each seedling so that they are 8 to 12 inches apart.