What Garden Flowers Can I Plant Now?

There’s nothing better than looking out to your garden to see beautiful buds and gorgeous garden flowers. However, to achieve a garden that is blooming all year round requires planning, and that’s where we’re here to help.

From summer sun soakers to hardy winter plants, we’ve put together a comprehensive month-by-month flower planting guide. Whether you’re a seasoned green fingered gardener or a complete gardening novice, our planting calendar will tell you everything you need to know about what flower seeds you need to sow now. If you’re ready to start your all-season garden, head to your local Homebase to browse our wide range of flowers.

Flowers to Plant in Spring

A time when the natural world is awakening and new life is budding, Spring seems the perfect place to begin our seasonal planting guide. With summer just around the corner, the spring months are some of the busiest flower planting and seed sowing times for gardeners, so let’s get straight into it.

Flowers in Season in March

March is often considered prime time for sowing seeds for plants that flower in the summer. You can sow Marigolds directly into the ground, plant your first summer flowering bulbs like Dahlias in the garden or plant half-hardy plants like Cosmos, under cover to protect from frost.

Early spring is also the ideal time to sow certain perennials indoors and under glass, like Lupin, Achillea and Echinacea.

Flowers in Season in April

Once April rolls around, warmer temperatures are much more reliable, and the chance of frost is pretty much gone. That means it’s time to focus on half-hardy garden flower seeds that can be sown indoors, like Rudbeckia and Nemesia.

You can also start sowing hardier plants outside, like Clarkia and Lagurus, as well as several types of Poppy plants that’ll begin flowering in summer and autumn.

Flowers in Season in May

In May, the soil is warming up, so now is a great time to sow garden flowers planted directly into the ground or in damp compost.

Some garden flowers in season to sow or plant outdoor in May are Sunflowers, Verbena bonariensis and Nasturtium.

Flower Planting in Summer

Summer is the highlight of your garden calendar. At this point, you should have lots of gorgeous garden flowers coming up that need looking after, at the same time you can also keep sowing seeds and planting many flowers throughout the summer.

Flowers in Season in June

With warmer air and soil temperatures rising, some of the best flower seeds to sow in June are bedding plants, border flowers and herbaceous perennials, like Canterbury bells, Alstroemeria, Nasturtiums and Arabis. However, remember to be aware of dry spells and keep your soil nice and moist to aid growth.

Flowers in Season in July

The warm temperatures and longer days of July speed up the germination process, making it a perfect time for sowing and growing many garden flower seeds outdoors.

Pansies, Forget-me-nots and Wallflowers are great flowers to sow in July. You can also make the most of your last chance to sow Delphiniums for summer flowering the following year.

Flowers in Season in August

August is the perfect month to sow hardy plants like California poppies and Calendula, that’ll survive the winter outdoors and flower in the following spring. You can also start sowing some pot plant seeds indoors like Cactus and Coleus.

Flower Planting in Autumn

Autumn is a busy season for gardeners, as it’s the perfect time to start getting garden flower seeds sown and ready for the following spring and summer. You’ll also find several beautiful autumn flowering plants that’ll come through in these months.

Flowers in Season in September

September kicks off the autumn flower planting season and gives you the chance to get an early crop in spring.

Get sowing your Nigella, Poppy and Wild carrot seeds outside. You can also sow Wildflower seeds in September, as they germinate in winter and will start to bloom the following spring.

Flowers in Season in October

Despite the cold temperatures and shorter days, there are still garden flowers and perennials you can sow in October.

You can sow Aquilegia, Phacelia and Cowslips seeds outdoors, or Orlaya grandiflora and Sweet peas under a cold frame.

Flowers in Season in November

Sowing in November gives you the chance to get a head start on the gardening year ahead and give yourself more time in spring.

You can start sowing perennials like Eryngiums (Sea holly), or get planting Bare root roses, which benefit from a dormant period to prepare for their blooming season.

Flowers to Plant in Winter

Winter may seem like a month to get cosy indoors and avoid gardening at all costs, but there are still hardy plants that can benefit from being sown or planted during the winter months to enjoy during winter and early spring.

There are also many winter flowering plants, like Pansies and Cyclamen, that’ll keep your garden looking pretty during the colder months.

Flowers in Season in December

December is your perfect opportunity to get ahead with sowing and save yourself a bit of time when the Spring months roll around.

You can sow hardy Cyclamens and frost tolerant Snapdragons in December, although the latter will grow better with a bright light. You can also sow Laurentia seeds under glass and Sweet peas in a container.

Flowers in Season in January

The start of the new year is a reasonably quiet time for gardening, but there are some garden flower seeds you can sow in January, in a greenhouse or heated propagator.

You can plant Begonias indoors, ready to move outdoors in March, or sow Geraniums, Petunias and Lobelia in a heated place.

Flowers in Season in February

After a quiet January, February starts to get slightly busier as we prepare for the spring and summer ahead.

Sow Cosmos and Impatiens (busy lizzie) seeds in compost and keep them indoors to germinate. There are also various perennials you can start sowing outdoors, like Liatris, Globe thistles and Japanese anemones.

That’s our garden flowers guide complete. Head to your local Homebase store to browse all of the above flowers and chat with our Garden and Outdoor experts for some friendly advice.