How to Grow Wildflower Seed

1. Preparing the ground 

Before sowing wildflower seed, clear the area of existing vegetation, including weeds and unwanted plants such as nettles, thistles, docks and grass. Heavily weeded areas may need weeding several times over a few weeks. Prepare the site as early as possible before sowing.

The goal is to create a firm, weed-free seedbed that supports good germination. Wildflowers generally establish best in soils with lower nutrient levels, as fertile ground encourages grasses and weeds to grow more strongly. Ideally, aim for moderate to low fertility in the top 15cm of soil.

If the topsoil is particularly rich, it may be beneficial to remove it and sow into the subsoil instead.

Using a fork or a tiller, loosen-up the top layer of soil, around a depth of 10cm. On compacted or poorly drained soils, work down to approximately 25cm.

Measure the area carefully so you can calculate the correct amount of seed required.

2. Sowing the Seed

You can sow wildflower seed throughout much of the year, as long as it is possible to prepare the soil as described above. However, the most suitable sowing periods are March and April, August and September.

Different wildflowers prefer different soil types, so it is important to choose a mixture suited to your site.

Before sowing, mix the seed thoroughly to help achieve an even distribution. For smaller areas, sow by hand. For larger areas, you can achieve a more even distribution using a spreader. Mixing the seed with sand can make it easier to sow evenly.

Typical sowing rates are: 5g per m² for mixtures containing grass, usually around 80% grass and 20% wildflower

2g per m² for 100% wildflower seed mixtures

After sowing, work the seed into the soil, to a depth of around 0.5cm, by lightly raking the area Then firm the ground by gently treading the soil.

3. Aftercare and Ongoing Maintenance

During the first year, you will need to be vigilant for weeds which can be managed by mowing, hand-pulling or careful spot treatment with a permissible herbicide.

Wildflower areas should usually be cut twice a year: once in spring and again in late autumn after the plants have set seed. Cutting helps control weeds, keeps the area tidy and allows seed to be dispersed. After cutting, remove the clippings to help lower soil fertility and encourage wildflowers rather than vigorous grass growth.



Types of Wildflowers

Annual wildflowers complete their full life cycle in one growing season, from seed to flower and back to seed. Many cornfield wildflowers are annuals.

Perennial wildflowers live for several years. They often do not flower in the first season but should return and flower in future years.

Biennial wildflowers take two years to complete their life cycle. They usually flower in their second year only.