Butterflies are in decline and need help. One way in which we can all help is to plant and grow wildflowers. They not only look good but attract a variety of pollinators such as butterflies, moths and bees. Many varieties will also self seed after flowering.
If you would like to know what to sow the Butterfly Conservation Trusts secret gardener has some wildflower seed suggestions and details on how to grow them. For more information please visit their website here.