It's that time of year that it's traditional to spoil your mum with gratitude for all the things she does for you. If you're not going to be seeing your mum in person this Sunday for Mother's Day, you can at least send her a bunch of flowers to show you care. Organising that online couldn't be easier - so now you've no excuse to forget. Also see: How to make personalised cards online.

How to buy flowers online

• Open your web browser and search for 'flowers'. There are loads of choices:

 You can also buy flowers from Amazon Fresh, Amazon's grocery delivery service. Right now you can get free delivery on orders over £40. See this deal and all bouquets and arrangements on Amazon.

• Many flower delivery services will let you send a personalised card at the same time. Moonpig currently lets you add a greeting card for free with code TELLMUM. Most flower delivery services will also offer Mother's Day discounts, free delivery on Mother's Day Sunday, or money off the first order. 

• Choose a website and look at the bouquets on offer. We're taking a closer look at eFlorist below because it has some good deals ahead of Mother's Day (don't worry, your mum doesn't know that).

• If you don't know anything about choosing flowers, play it safe and go for one of the bestsellers. For example, eFlorist is offering the Rose and Lily bouquet as a bestseller at £19.99 with £15 off, which also comes with free chocolates.

eFlorist best sellers

• Once you've chosen a bunch of flowers, just click on it to go to the product page. Now select what size bunch you want. At eFlorist you can choose from Standard, Luxury or Super Luxury. You'll have to pay a little more to get a bigger bunch - the Roses and Lily bouquet costs £29.99 for Luxury or £39.99 for Super Luxury.

• Most sites will let you add extras like a teddy, balloon, box of chocolates, or vase with your flowers. Select an item with your choice of bouquet size.

eFlorists Add-on

• Now choose a date for your delivery. Many sites will offer guaranteed free courier delivery on Sunday 31 March.

• When you're happy with your choices continue to Check Out.

• If you didn't choose an extra gift along with the flowers, you might be prompted to do so now. You can select one of the options if you want to, or 'Continue to checkout'.

• On the next screen enter your name, email address and phone number, then click Continue.

• You'll also be asked for your mum's name and address. Start typing the address or postcode into the field to get auto suggestions.

• Specify any special delivery instructions and select Mother's Day as the occasion, then enter a gift message. This can be printed on a free default card. Some sites will let you buy a greeting card too, such as Serenata Flowers, which lets you add a card for £2.99 extra.

Gift message card

• Before you buy anything online it's a good idea to search for voucher codes online. You'll often see the Voucher Code section right before the final payment screen. You can see Tech Advisor's voucher code collection here.

• Finally, enter your card number, expiry date and security code, then click Pay. You should get an email receipt within a few minutes. And that's it - easy!