You can grow cosmos  throughout the year (Summer, spring)

credit-Pinterest

 To start seed use 70 percent cocopeat and 30 percent vermicompist as soil mix

credit-Pinterest

 Take a  pot with drainage hole at the bottom and fill it with soil mix. '

credit-Pinterest

 Fill 70 to 75 percent of the pot with mixture of soil 

credit-Pinterest

 Wet the soil mix before you sow seeds in pot

credit-Pinterest

 In 7 inch diameter container we can show atleast 10-15 seeds

credit-Pinterest

cover the seeds with half inch layer of same soil mixture

credit-Pinterest

  normally after 6-7 days seeds will start to , germinate

credit-Pinterest

 Propagate Hydrangeas Plant Like a Pro with This Simple Trick

credit-Pinterest