Management Guidelines

green farm seeds 

GFS Wildflower Management Guidelines

Mixture Selection

It is important that the correct mixture is selected according to the soil type, aspect and management

Our most popular and proven mixtures are listed in this brochure (please call to discuss specification)

Site Preparation

The aim is to produce a firm, weed-free tilth to promote healthy germination

Subsoils often provide weed-free areas with a low nutrient status and are therefore suitable for wildflowers

It is occasionally necessary to remove the topsoil in areas of high fertility as these soils promote the growth of more vigorous grasses and weeds

To remove docks, thistles, nettles and weed grasses; the site should be treated with a systemic herbicide prior to seed bed cultivation, the stale seed bed technique is often used


a. Cultivate site and allow to remain fallow if practical

b. Remove / treat all weeds with herbicide

c. Remove topsoil / fertility

d. Cultivate to 10cm

e. Create a surface tilth


Sowing can take place throughout most of the year, providing a good fine tilth can be prepared

March/April and August/September are generally the most suitable

Mix seed to ensure even species distribution

Drill/broadcast – calibrate sowing device

Rate – 5 g/m2 mixtures with grasses or 3 g/m2 100 % wild flower mixtures

Use sand to bulk up small seeding rates, 4 parts silica sand to one part seed by weigh

Raking/harrowing – mix seed into soil (depth approx 0.5 cm)

Firm seeded with roller – Very Important

Wild Flower Maintenance First Year

Control weeds and reduce competition from vigorous grasses

If necessary cut the sward to a height of 5cm every two months or when the sward reaches 15cm

Remove all cut material to avoid smothering the sward

Where persistent weeds are a problem, spot treat with herbicide or dig-out.

Future Maintenance

The sward should be well established after the first 12 months and contain a diverse range of species

Cut to 7.5cm during March/April and remove cuttings

Second cut should be down to 10 cm and take place at the end of the flowering season approx August/September

Leave cuttings for a week to dry and shed seeds and then remove all cuttings or use as hay

The site may require further cuts in the Autumn period to remove untidy growth in an extended growing season

Another option is to leave the dead material until February / March, then cut and remove

The dead material provides a diverse habitat for wildlife particularly butterflies

Seed & Fertiliser Quantity Requirement Calculator

Area Requirement (KG)

Sowing Rate50 m2100 m215 m2200 m2300 m2400 m2500 m2750 m21000 m21500 m22000 m21 Acre1 Hectare
5 gsm/m20.250.500.751.001.502.002.503.755.007.5010.002050
10 gsm/m20.501.001.502.
15 gsm/m20.751.502.253.004.506.007.5011.2515.0022.5030.0060150
25 gsm/m21.252.503.755.007.5010.0012.5018.7525.0037.5050.00100250
35 gsm/m21.753.505.257.0010.5014.0017.5026.2535.0052.5070.00140350
50 gsm/m22.505.007.5010.0015.0025.0025.0037.5050.0075.00100.00200500

Quantity Coverage (m2)

Sowing Rate1 kg5kg10kg15kg20kg30kg40kg50kg75kg100kg200kg
5 gsm/m220010002000300040006000800010000150002000040000
10 gsm/m210050010001500200030004000500075001000020000
15 gsm/m267335665100013352000266533355000666513335
25 gsm/m240200400600800120016002000300040008000
35 gsm/m23014028543057085511401430214028555715
50 gsm/m2201002003004006008001000150020004000
1 acre = 4040 m2
1 hectare = 10,000 m2