Most wildflowers grow best on well-drained, well-aerated soils. Others are adapted to moist meadows. Select a wildflower seed mix that is best suited to the site conditions. On sites with poor or compacted soil or extensive weed populations, considerable soil preparation and weed control are necessary. A soil test can help with analyzing conditions and making necessary amendments. With initial soil preparation, little if any fertilizer is required prior to planting. If weeds predominate on the site, or if the soil has been disturbed by rototilling or construction activity, it may take up to a year to control weeds before wildflowers can be planted. Eliminating weeds prior to planting wildflowers is easier and less expensive than identifying and controlling them in newly seeded sites. This can be done by watering to stimulate weed-seed germination and growth, then spraying or pulling the resulting weeds. For further information on wildflowers, see fact sheet Wildflowers in Colorado.
