Wildflower seed is best sown between the beginning of March and the end of May, or the beginning of October and the middle of November. Fertilizer should not normally be applied. The best results are usually achieved in soils of low fertility where nitrogen status is low.
Early site preparation, three to four weeks prior to sowing, is recommended for weed control. Persistent perennial weeds should be eradicated with a herbicide such as Roundup.
Some seedlings will appear in two weeks, whereas others may take up to four weeks. Seed requires ample moisture to germinate; the seedbed should be kept moist for four to six weeks.
Wildflowers grow best when planted alone. Planted areas may be mowed in the late fall when the species have finished flowering and have set their seed.