Large or perennial weeds may re-grow. Persistent weeds may require repeated treatments once new growth appears. According to Substral, the slow-release granules stay active for approximately 100 days, meaning they are constantly adding nutrients to the soil. Potassium is an extremely useful nutrient, especially beneficial to grass over winter, because it helps grow strong roots and stems. Looking for a relatively high potassium ratio in a winter fertiliser is a good idea.

Liquid feed is either a concentrate that can be added to water, or it’s pre-made. This fertiliser is generally fast acting and can be applied to the lawn using a watering can. Choosing the best lawn fertiliser will depend on the current state of your lawn, as well as what your grass needs. We’ve put together the following information so you’ll have a better idea of what to look out for: The fertiliser consists of relatively fine granules, so it can be a case of trial-and-error to make sure that they are applied at the recommended amount of 35 g/m². If you are using a spreader that is intended for larger granules, you will need to reduce the aperture accordingly.

Spring & Summer Fertiliser | Professional Lawn, Grass & Paddock Feed | Bags & Tubs

Overall, it’s one of the best winter lawn fertilisers to buy on a budget. You get a generous amount of product for the price, and it will be sufficient to cover the majority of small/medium gardens. Not just for your lawn, our premium grass seed can be used for play areas, sports pitches, landscaping projects and more.

Sold in a 2 kg box, this granular fertiliser covers an area of approximately 100 m². The instructions state that should generally be applied at a density of 20 g/m². For areas that need more attention, this can be increased up to 30 g/m². As well as aiding with photosynthesis, potassium helps plants store and use water efficiently; it can help make them less susceptible to drought. Fertiliser comes in either liquid or granular form. When it comes to the best winter lawn fertiliser, granular fertiliser is best. The ratio will be written as three numbers, for example: ‘NPK 6-5-10’. This fertiliser would be made up of 6 parts nitrogen, 5 parts phosphorous and 10 parts potassium. Sow the grass seed – Spread evenly by hand in small areas or use a seed spreader for larger areas, disperse evenly and not too close together, ideally 5-10mm deep in the soil.

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Prepare the soil – Loosen the top couple of inches of soil, remove debris, fertilise with a decent starter fertiliser, avoid using weed killers before and after sowing.