When and How to Plant Wildflower Seeds to Rewild Your Yard

This guide will help you fill your landscape with beautiful wildflowers.

Growing wildflowers is an excellent way to welcome wildlife such as pollinators to your garden. Planting wildflowers from seed is a simple and cost-effective method to use to get started. But what are wildflowers, exactly? And what's the best way to plant the seeds? This guide will answer those questions as well as explain how to take care of wildflowers so they'll thrive for many years to come. 

What Are Wildflowers?

pink poppies coneflowers growing garden
Kindra Clineff

Wildflowers across the globe are plants that naturally grow in the wild without any human involvement. These plants are a mix of annuals, short-lived perennials, and long-lived perennials; some live for just a single season before setting seed and dying, while others live more than a year, but don't necessarily produce seeds each growing season. The mix of wildflowers you choose to plant should ideally contain some of each type for the quickest and longest-lasting show. 

Generally, wildflowers are uncultivated plants that grow and bloom without any human intervention.

Aside from their beauty, wildflowers create prime pollinator habitat. While some wildflower varieties might produce large, flamboyant flowers loaded with petals, these cultivated varieties (aka cultivars) do little to contribute pollen and nectar. Further, cultivars very often don't come true to type from seed–if they’re even able to produce seed at all. So while many cultivars are derived from otherwise obvious “wildflowers” native to a given region, they aren’t especially great for creating a wildflower garden. That's why it's best to plant wild-type seed mixes.

Choosing Wildflower Mixes

Depending on where you live in the US or abroad, you will want to find or create a mix of wildflower seeds that contains plants adapted to your climate. Desert plants wouldn’t do well in a cold, wet climate and cool weather plants would quickly die off in a hot and dry climate. So choosing the right mix with the help of your local nursery or university extension office is key to creating a wildflower garden that will thrive for many years.

Another point to consider is the use of grasses. While these plants don't produce showy, colorful blooms, grasses do provide much needed texture in the garden. Consider adding some native ornamental grasses to your seed mix or planting them in the ground prior to overseeding with your wildflower mix.

When to Plant Wildflower Seeds

The best time to plant wildflower seeds is in spring prior to the heat of the summer. Although it can be tempting to plant later in the season while inspiration is blooming around you, know that seeds are less likely to eaten, dry out, or blow away in the spring when temperatures are cooler and moisture is typically more abundant. Planting your wildflowers in spring will also give the seedlings a full growing season to become established and endure the winter.

Preparing Your Garden

While wildflowers might not need assistance reseeding themselves in the wild, they may need some help jumpstarting their growth under cultivation. These tips will help get you going on the right track.

1. Pick a Sunny Location

As with many things, location is key. So before you begin tilling the soil or purchase seeds, take time to plan where your wildflower garden will go. Because most wildflowers are pollinated by insects that require ultraviolet light to see, the vast majority of these plants do best grown in full sun to part shade. With this in mind, select a site in the garden that gets at least 8 hours of sun per day.

2. Clear the Ground

Before you begin seeding or planting, remove existing vegetation and thatch from the planting area to avoid competition and barriers to growth. While some seeds can grow if you just cast them into existing beds, you will have more growth, by far, when starting with a clean slate. 

3. Amend the Soil

In some areas, soils have been depleted from years of degradation, chemical use, and removal of top soil (largely done in new developments). For these reasons, amending your soil with organic matter, such as compost or aged manure, can be especially helpful. Organic probiotic fertilizers containing beneficial bacteria and fungi will also help to increase soil vitality and create a better growing environment for your seedlings. The best time of the year to amend the soil is in fall.

Planting Wildflower Seeds

Believe it or not, there’s an art to planting wildflower seeds, which is typically done by broadcasting. Broadcasting seeds is where seeds are spread (usually by hand) across prepared ground and allowed to land where they may. Broadcasting helps to create a random distribution of seeds and distribution of species contained in the seed mix.

Always take into account the total square footage of land you’ll be seeding. Most pre-packaged seed mixes have a recommended amount of seed per square foot which will give you a better idea of how much to purchase.

While the broadcasting rate does not have to be exacting or evenly distributed, know that too little seed results in a barren look that’ll leave soil open for weeds to take hold. On the other hand, too much seed can lead to crowding and poor growth. To avoid over and under seeding, there are a couple of tricks you can use to ensure good distribution:

  1. Separate your seed mix into two or three equal parts. Depending on the total amount of seed you’ll be working with, this can help keep the portions manageable and equally mixed.
  2. Mix your proportioned seeds with a roughly 8:1 ratio of sand. Being inert and actually beneficial to many soils, sand is a great way to help evenly distribute the seeds within the mix.

While there are a number of seed and fertilizer broadcasters available on the market that work well, the easiest and cheapest method to broadcast seeds in small to medium-sized gardens is by hand. Simply grab a handful of mix and gently toss across the bare soil with long, even throws. Take two or three test broadcasts to get the feel of the mix leaving your hand, then continue with the rest of the seeds. A good strategy is to broadcast half of your mix evenly across the entirety of the prepared bed and then broadcast the area again with the second half of the mix.

After you’ve broadcast your seeds, you’ll need to compress them a bit into the soil to help soil and seeds make good contact. For smaller areas, no additional equipment is necessary and simply walking across the entirety of the area will work well. Some gardeners like to do this barefoot because shoes can pick up seeds due to static electricity and deep treads.

For larger areas, a soil compactor (basically a large drum filled with water or sand) can do the job much quicker than by foot. It’s also important to note that seeds should not be covered with soil. Many wildflower seeds actually require exposure to sunlight in order to germinate and covering your seeds with soil can greatly reduce germination rates.

Similar to planting grass seed, spreading straw lightly across the prepared beds after planting wildflower seeds can help keep people and other creatures off of the newly planted garden. And don't worry, birds and other wildlife usually won't eat the seeds.

Make sure to water the area thoroughly once you've planted your wildflower seeds. Try to avoid watering with heavy sprays or big droplets that will dislodge or move seeds around. And only use as much water as the soil can handle without creating puddles, which can cause seeds to float.

Caring for Your Wildflowers

Within the first few weeks, you should notice some sprouting from your seeds, especially annuals that grow quickly from seeds. In general, perennials and especially natives will be a bit slower to get started. While annuals will bloom the same year you plant the seeds, expect most perennial wildflowers to not begin blooming until the second or third year.


Keep your wildflowers well watered throughout the fist growing season. Plants native to a given region typically will not need nearly as much water–if any–after the first growing season, which cuts back on water usage significantly over the long run. 


Remember that many wildflowers will need to set seed each year to replace the parent plants over time. Aside from some editing out some of the more exuberant seeders, avoid the temptation to deadhead flowers and let your plants go to seed each season.

Pests and Diseases

Because of the diversity of species in a typical wildflower mix, diseases are rarely a problem that affects all the species in the garden. If pests such as aphids, mealybugs, or whiteflies occur, hold off on spraying chemicals, especially while plants are blooming. Wildflowers in bloom attract many pollinators and the spraying to control pest insects will also harm beneficial insects. In lieu of spraying pesticides, allow beneficial predatory insects to reduce pest populations. 

Wildflowers are an excellent addition to most garden. The benefit to pollinators is only icing on the cake compared to the beauty that they bring year after year.

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