Every part of the United States has a different selection of wildflowers. Because the flowers grow naturally in each specific area, they have the potential to come together in a particularly easy-care garden. You must become familiar with what varieties grow best in your area, and then you can plant a garden that thrives in your area's climate and soil types.
To design a wildflower garden, you will want to find an open location where this informal, low-maintenance garden will look natural. Choose a space that offers the sunlight that is appropriate to the wildflowers you want to plant. Alternatively, go the other way around and choose the wildflower types to fit the exposure you already have. You will find shade lovers, sun lovers and those that like something in between.
Design the shape your want for your wildflower garden. You can mark out a space and plant it accordingly, or you can allow your garden to tell you where wildflowers can simply fill in an otherwise unused area. If you are actually designing the shape of your garden, make the outline flow naturally. A formal square or circle will usually clash with the informality of a wildflower garden.
A wildflower garden is ideal on hillsides to stop erosion or on flat areas where a large area needs to be covered. Plan wildflower gardens in open areas that surround planter beds, rather than expecting your wildflowers to fit into more controlled parts of the landscape. A wildflower garden will look best were it is informal, though there is no reason not to scatter specific wildflowers into pre-planted gardens where the flower's form and shape blends well with other plants.
Remove any weeds, lawn or other materials where you are planting your wildflower garden. Avoid turning over the soil, as this will probably bring up more weeds. Clearly, if you are planting wildflowers native to your area, you won't have to amend the soil or do any other major preparations.
Sow seeds in accordance with the directions of the seeds you are using. Thick seeding will give you a thicker carpeting of plants. Thinner seeding will look more delicate. Seeding is the most practical way to plant a wildflower garden, especially in larger areas. You can interplant with native plants purchased in pots for a more sculptured look. Planting potted plants is an effective way to add larger flowers, shrubs or trees to your wildflower garden.
Sow seeds in drifts over open fields or hillsides. Nature tends to grow groups of the same plants together with occasional scatterings of another visiting species.
Keep weeds removed. This is one of the most important parts of growing a successful wildflower garden. Make sure you know what your planted seeds will look like when germinating so you don't pull them out along with the weeds.