Flower seeds to sow in July

Discover six flowering plants to grow from seed in midsummer, including foxgloves and wallflowers.

We might think of spring and autumn as the best times to sow seed, but there are plants that you can start off in midsummer. Long, warm days with high light levels speed up the germination process, helping you to boost stocks of perennials, biennials and indoor exotics.


Before you get sowing, take a look at our top seed sowing tips. And, for the veg plot or allotment, check out our feature on vegetable seeds to sow in July.

Find out which flower seeds to sow in July, below.

If you're looking for long season of colour, wallflowers (Erysimum) are a must.


July is the last month to sow these cottage garden stalwarts, for flowers in their second year. Delphiniums are outstanding plants for bees, too.



Fancy sowing something a bit different? Strelitzias are vibrant perennial greenhouse or houseplants, and can be sown throughout the summer months. The spectacular blooms make beautiful cut flowers, too.



Forget-me-nots (Myosotis) can be sown from May to September, mimicking the natural process of seed dispersal and germination that follows their spring flowering. A beautiful self-seeder for dappled shade.



By sowing pansies now, you’ll give them plenty of time to develop before the planting where they are to flower, in autumn. Sow early in the month for spring blooms. Here are eight pretty pansies and violas you could grow.



If you’re looking for long season of colour, wallflowers (Erysimum) are a must. Keep deadheading the blooms and they’ll keep on coming. Wonderfully scented.



Foxgloves are just one of the many biennials that can be sown in July. Other biennials for summer sowings include honesty (Lunaria annua), sweet rocket (Hesperis matrionalis) and stocks (Matthiola incana). Take a look at our step-by-step project on sowing foxgloves.