Grass Seed Calculator

How do I calculate how much grass seed I need?

Whether you’re purchasing lawn grass seed to start that perfectly manicured garden you’ve always dreamed of, paddock grass seed to keep the ponies happy, or you’re buying the best lawn seed for a shady patch, you’ll need to know exactly the right quantity of seed needed.

The amount of grass seed required is not just down to the area that needs to be covered. Density, growth rate and whether you are starting from a clean seed bed or you need grass seed to repair and rejuvenate a space, all define how much seed should be used.

For minor repairs to a lawn, try not to sow the seed too densely or this can result in tufts and an uneven patchy looking lawn. 

If you are looking to create or spruce up a high traffic area such as a grass pathway, sports pitch or hard wearing lawn, a tough grass seed with a higher grass seed sowing rate will serve you best. Our grass seed calculator will take into account whether ryegrass (which will provide the hardiness) will be incorporated into the seed mix and account appropriately.

 

How much grass seed is enough?

A good quality grass seed may cost more, but a cheap grass seed will require twice the amount and the results may well be very disappointing if you are after a lush lawn. On the other hand, a fast growing economy grass seed is perfect for larger, general use grassed areas that need to be covered quickly.

Another factor to take into account when ordering grass seed is overestimation. It is a good idea to allow for 30% extra seed. 10% of this will allow for any discrepancies in measurements (we’re only human after all!). Another 10% will allow for unwittingly ‘feeding the birds’, and a further 10% can be kept for future repairs to lawns (sports pitch for the grandchildren, anyone?).

In any case, the Boston Seeds Grass Seed Calculator makes it easy to find out exactly how much grass seed is needed to grow the perfect lawn. Simply enter the dimensions of the area you want to cover with grass seed, choose the type of seed and our tool will do the work for you. Suitable for use on square, circular, and triangular shaped lawns. Have a number of lawns you’d like to seed? No sweat, just add the different sizes and the calculator will provide a total figure. Voila!

 

Why Use a Grass Seed Calculator?

A grass seed calculator helps take away the guesswork when creating a beautiful, luscious green lawn. Whether you’re crafting a garden from scratch or overseeding an existing one, choosing the right amount of grass seed is important to ensure you either have enough or don’t end up with more than 30% extra grass seed, costing you more money than needed.

Our grass seed calculator can determine how much grass seed you will require. Simply enter the measurements of your garden and we will do the rest of the work. If you’re still unsure on how much grass seed you need, feel free to get in touch with one of our friendly team members.

 

What quantities of grass seed can I buy?

At Boston Seeds, you can buy our grass and lawn seed in quantities of:

• 2kg of grass seed
• 5kg of grass seed 
• 10kg of grass seed
• 20kg of grass seed
• 5 x 20kg of grass seed
• 25 x 20kg of grass seed

Ordering regularly or looking for large volumes? Click here to apply for a trade account today - we review all applications within one working day.

 

Assess Existing Grass Conditions

Before sowing new grass seed, it’s essential to assess the existing grass conditions as this can affect the amount of grass seed you use. By not properly preparing your lawn, it is easy to waste grass seed and end up with an uneven looking lawn.

• Dead Grass: If your lawn has dead grass, it’s crucial to remove it before sowing new seed. Dead grass can compete with new grass for water and nutrients, hindering the growth of your new lawn.
• Bare Patches: Bare patches in your lawn need proper soil preparation before sowing new seed. Ensuring the soil is well-prepared will give the new grass seed the best chance of germinating and growing into a healthy lawn.
• Moss: If your lawn has moss, using a moss killer before sowing new seed is essential. Moss can compete with new grass for water and nutrients, so eliminating it will help your new grass thrive.

Read our blog on tips on how to overseed an existing lawn for more information.

 

What to Consider When Choosing Sowing Grass Seed?

Climate and weather can have a significant impact on seed growth. Here are some factors to consider:

• Temperature: Most grass seeds germinate best in temperatures between 10-20°C. If the temperature is too high or too low, it can affect seed germination and growth, leading to uneven or sparse lawns.
• Rainfall: Adequate rainfall is crucial for grass seed germination and growth. Insufficient rainfall can hinder seed growth and result in bare patches, so it’s important to ensure your lawn receives enough water.
• Sunlight: Most grass seeds need adequate sunlight to grow. Insufficient sunlight can lead to weak and spindly grass, so it’s important to ensure your lawn gets enough light for healthy growth.

Different types of grass seed may have different sowing rates, therefore if you need a specific type of grass seed make sure to check you’re purchasing the right amount of grass seed. If you need any help, don’t hesitate to get in touch.

Read our blog which explores which grass seed you need, depending on your needs and requirements.

 

Why choose Boston Seeds?

With over two decades of experience, Boston Seeds is a family-run business whose passion lies in creating beautiful outdoor spaces with high-quality grass and wildflower seed mixtures.

When buying from Boston Seeds, you are buying:

• Quality assurance: Every one of our lawn seed and grass seed mixes has been expertly curated and rigorously tested to ensure they create beautiful, lush and healthy lawns.
• Customer satisfaction: We take pride in providing the best possible service and product for our customers. If you've got any questions or concerns our team is always happy to help.
• Expert advice: We are always on hand to help provide expert advice on planting and sowing your grass seed and expert lawn care tips to ensure you get the best lawn. Take a look at our advice section or get in touch. 
• Versatility: Whatever your needs and requirements are, we've got the grass seed mixture for you. Whether you're looking for shade tolerant, fast-growing or hard wearing grass seed we've got it all.

 

How We Can Help!

At Boston Seeds we take pride in excellent customer service. If you're growing a lawn from scratch but unsure how much grass seed you need, our handy Grass Seed Calculator can help you figure it out in just a few clicks! 

With Next Day Delivery on hundreds of items too, choosing from our extensive range of lawn seed couldn't be easier.  Ordering regularly or looking for large volumes? Click here to apply for a trade account today - we review all applications within one working day.

Have a question about best practice when it comes to growing your lawn from grass seed? Or unsure which grass seed is best for your needs? Get in touch with our friendly experts who'll be happy to help.