Flower Seeds to Sow in March

Flower seeds to sow in March

Sow these seeds in March and be rewarded with beautiful blooms.

Lots of flowers can be sown in March, including sweet peas, California poppy, cosmos, and ladybird poppies.

Hardy annuals can be sown direct outside, where they are to flower. These do best on 'poor' soil, so do not enrich it with fertiliser. Half-hardy annuals such as dahlias and cleome, and perennials are best sown under glass at this time of year.

Here are just some of the flowers that you can start to sow in March.

Advertisement

Hardy annuals

Hardy annuals can be sown directly where they are to flower; prepare the ground well first, by clearing it of weeds and raking to a fine tilth. Do not enrich the soil. Try Ammi majus, borage, clarkia, cornflowers, Papaver commutatum 'Ladybird' (pictured).

Sweet peas

Sweet peas can be sown under cover from October to March. They like a long root run, so sow into deep pots or modules. Watch our video guide to growing sweet peas.

Wildflower mixes

Annual flower mixes can be sown in March. As with hardy annuals, prepare the soil well by removing weeds and raking to a fine tilth, but do not enrich the soil.

Half hardy annuals

Half hardy annuals like cleome (pictured), antirrhinum, zinnia and cosmos can also be sown in March. They are not frost hardy, so must be sown under cover. Discover how to sow half hardy annuals.

Dahlias

Dahlias are tender perennials that will flower in their first year if sown in the greenhouse in March. In autumn, dig up the tuber to store over winter, or lift and store in cold areas. Find out how to grow dahlias from seed.

Fast-growing perennials

Early spring is the ideal time to sow quick-growing perennials under glass. Try sowing echinacea, coreopsis, lupin or achillea and you may be rewarded with flowers this year. Find out how to grow quick-growing perennials from seed.

Discover which vegetable seeds can be sown in March.

Hardy annuals can be sown direct outside, where they are to flower.

Advertisement

Discover more ideas and inspiration

Related content

Where to sow seeds

Veg crops to sow in summer

Vegetable seeds to sow in March

Related offers

SAVE 20%

Farmer Gracy 20 per cent off Crocosmia

Save 20% on crocosmia

Enjoy vibrant colour in the garden summer after summer with savings on crocosmia. You'll save 20 per cent on crocosmia corms when you order now. Corms will be delivered in March 2018 ready for spring planting.

Use code: BBCGWCRO20

Order now

Offer

Save £17 on blackcurrants

Enjoy the delicious taste of fresh, home-grown blackcurrants for less. You can buy one blackcurrant 'Ben Connan' for £9.99, or save £17.98 when you buy three for just £11.99.

Order now

Offer

Apple 'Ellison's Orange'

An excellent alternative to Cox, ‘Ellison’s Orange’ is much easier to grow, is self-fertile and does not require a pollinator. Buy a bare-root tree for just £17.50 (saving £3) with this offer.

Order now