This wildflower mix for feeding butterflies was designed with experts from the LPO (Bird Protection League), who work to support biodiversity in the sense. It was composed to provide food, shelter and a natural habitat for lepidopterans during the different stages of their metamorphosis (from egg to adult). The wildflower mix for feeding butterflies is composed of 4 annuals and 21 perennials including dill, yarrow, ptarmica yarrow, wild cornflower, borage, wild teasel, catnip, knapweed, scabiosa knapweed, white companion, echium/bugloss, fennel, lavender, wild leucanthemum, bird's foot trefoil, cuckoo flower lychnis, corn cockle, common sage, common campion, common silene, common silene, garden valerian. Seeding density: 1 to 4 grams / m² Soil preparation before sowing A good cleaning with a hoe is necessary. You can practice the false sowing technique. Simply clean your plot once, wait 2 to 3 weeks to give the weed seeds time to germinate. Then do a second cleaning to have a perfectly clean soil before sowing the flower meadow. After removing the last traces of weeds, give it a good dig to loosen the surface of the soil to create a well-refined seedbed. It is not necessary to loosen in depth but only the first 3 or 4 centimeters. Sowing a flower meadow Sow the seeds broadcast from March to June or from August to October, spreading them well over the entire seedbed. When the seeds are sown, gently pass the dig to bury them in the soil on the surface like sowing a lawn. Water thoroughly, then during the dry period, the emergence should take a few weeks. Flowering Flowering from spring.