When To Plant
Wildflowers can be planted either in the Spring, when most people are planting their garden or in the Fall, when Mother Nature does her planting.For Spring planting, sow one month prior to date of last hard freeze and gently water the area for the first month or so (unless Spring rains do it for you) to enhance germination.
For late Fall planting, simply scatter the seed on top of the soil or rake seed into the soil when freezing night time temperatures are consistant, mulch the area lightly, water once and forget. The seeds will remain dormant through the winter and germinate the following spring when the soil warms and the days are longer.
In temperate zones, sowing at other times of the year can be successful. Plan to sow seeds for germination during the cool, moist time of year to allow the plants to become well established before the hot, dry season.
CONTROL OF YOUR WILDFLOWERS
Once established, taking care of your wildflower garden is a must.This means you should evaluate the site once a year (usually late summer) and determine if your expectations are being met.You should understand the first year will produce a dazzling display probably not repeated in years to follow. This is true because the flush of annuals in the mix tend to initially dominate the perennials. Most perennials do not flower the first year, instead expanding their deep root system to ensure longevity.