Sunflowers package Helianthus 'Sea of sunflowers' - Organic yellow 9 m² - Flower seedsYearning for a sea of yellow? With this sunflower package, your garden or room will be full of sunflowers! The package has three different types of sunflowers. They all have their own hues and good points. All the flower seeds are organically certified! Sow the seeds under glass from late March to mid April, or outdoors in a seed bed from mid April to May. Plant the seedlings outdoors after five or six weeks. The flowers bloom from July to October.