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Flower Seeds

Inject some colour into your world and spread smiles with the range of flower seeds on sale here at OnBuy! With plants to suit all growers' tastes and garden styles, shop annuals and perennials for fresh floral inspiration and long-term colour respectively. Blooming brilliant!

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Looking to buy Flower Seeds?

Transform your outdoor space with the help of OnBuy’s floral selection. The eclectic collection of flower seeds we have to offer is equally suited to soils and planters alike, and contains options for the seriously green-fingered horticulturalists, amateur gardeners, and everyone else in between. 

The vast collection of perennial flower seeds for sale at OnBuy require just a single planting, and will provide a dependable splash of colour year after year. Alternatively, you can find annuals and half-hardy annuals (also known as summer flower seeds) for one-and-done blooms! Roses, petunias, forget-me-nots, and tulip seeds (plus many more) are just waiting for you in OnBuy’s soon-to-be bouquet, so start the search today! We promise your garden will thank you!

What are the easiest flower seeds to grow?

Always a favourite with little ones, sunflowers are incredibly easy to grow, and can reach humongous heights of up to 14ft and more! Simply sow the seeds straight into the ground in a sunny, sheltered spot, and watch them bloom over time. Our top tip for these elegant plants is to support their narrow stems as they reach higher elevations… this will help to keep them robust and sturdy, especially in stronger winds and gloomier weather.

Completely irresistible in fragrance and beauty combined, the sweet pea is likewise extremely easy to handle, and only requires a sunny spot and supportive fence in your garden. Just keep an eye out for mice, slugs, and snails with these flowers, as they love the young shoots. Marigolds are another fab choice for children, as the seeds tend to grow very quickly, so you’ll be able to see and smell colourful blooms in next to no time! From tall varieties for the border of your plot, to small species perfectly suited to smaller beds and containers, there’s truly a marigold to suit every personality and preference.

What are our top tips for growing plants from seeds?

At the top of our list, it’s most important to buy new seed-sowing compost each year, as this can have an enormous effect on your perennials. Specialist seed compost is packed with all the essential fertilisers and nutrients to support healthy germination and growth, so is an absolute essential when it comes to at-home planting. Raising young florae from seeds can be a very satisfying and cost-effective way of producing large numbers of bedding planets and a wide range of hardy annuals.

When it comes to the sowing itself, be sure to spread the seeds thinly, as this can greatly reduce the effects of disease later down the line. It will also reduce the competition for light, and so improve the quality of germinated seedlings with less likelihood of them becoming stretched. For best results, water them from below. 

Customers love our best-selling Flower Seeds

Popular Brands in Flower Seeds

Gift Republic
Johnson's Veterinary
Viridis Hortus
Mr Fothergill's
Johnsons Seeds
Thompson & Morgan

Our most popular Flower Seeds

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