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Lawn Seed Calculators

Work out exactly how much lawn seed you need for new lawns, oversowing existing turf, or patching bare spots. Pick a variety below, enter your lawn area, and the calculator does the rest.

Premium Perennial Ryegrass Blend

10kg bag. Hardy ryegrass blend ideal for new lawns (5 kg/100m²) or oversowing existing turf (3 kg/100m²). Rapid establishment and all-year colour.

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Premium Perennial Ryegrass Blend 10kg

Turbocote Kikuyu

1kg pure kikuyu seed. Hardy warm-season turf for sunny lawns. Sowing rate: 1 kg per 100m².

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Turbocote Kikuyu Seed 1KG

Royal Bengal Couch

1kg pure couch seed. Premium fine-leaf couch variety for golf greens and quality home lawns. Sowing rate: 1 kg per 100m².

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Royal Bengal Couch Seed

Turbocote Couch

1kg pure couch seed. Hardy warm-season couch for home lawns and sports turf. Sowing rate: 1 kg per 100m².

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Turbocote Couch Lawn Seed

Lawn Seed Calculator FAQ

When is the best time to sow lawn seed?

Warm-season grasses (Kikuyu, Couch): sow in spring or early summer when soil temperatures are consistently above 18°C. Cool-season grasses (Ryegrass, Fescue): sow in autumn or early spring when soil temperatures are 10–18°C.

How do I prepare the soil for seeding?

Clear weeds and debris, rake the soil to break up the top 1–2 cm, level the surface, and apply a starter fertiliser. After sowing, lightly cover the seed with a thin layer of soil or compost (no more than 3–5 mm) and keep moist until germination.

What's the difference between sowing rates for new lawn vs oversowing?

New lawn establishment uses a higher rate (e.g. 5 kg/100m² for ryegrass) to get full coverage from scratch. Oversowing existing turf to thicken it up or repair bare spots uses a lower rate (e.g. 3 kg/100m²) because there's already grass in place.

How long until the seed germinates?

Ryegrass germinates in 5–10 days under ideal conditions. Couch and Kikuyu take longer — typically 10–21 days. Keep the seed bed consistently moist (light watering 2–3 times a day) until the grass is established.

Can I mix different seed varieties?

Yes, but choose compatible types — ryegrasses blend well together (e.g. perennial ryegrass + fescue). Mixing warm-season (couch, kikuyu) with cool-season grasses generally isn't recommended unless you want a transitional lawn.