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Flowers to Sow in September

Wondering which flowers to sow in September? It’s time to sow calendula, larkspur, nigella and poppy seeds outdoors, plus wildflowers. In the greenhouse, sow cyclamen, pelargonium and schizanthus seeds and sow sweet pea seeds in a cold frame. Browse our September flower seeds below.

Wondering which flowers to sow in September? It’s time to sow calendula, larkspur, nigella and poppy seeds outdoors, plus wildflowers. In the greenhouse, sow cyclamen, pelargonium and schizanthus seeds and sow sweet pea seeds in a cold frame. Browse our September flower seeds below.

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Sweet Pea Seeds - Sublime Scent Mix

Average Packet Content 25 seeds

£2.99
Cat Grass Seeds

Average Packet Content 700 seeds

£1.75
Sweet Pea Seeds - Long Stem Mixed

Average Packet Content 50 seeds

£4.49
Calendula Seeds - Daisy Mix

Average Packet Content 50 seeds

£1.75
Cornflower Seeds - Polka Dot Mix

Average Packet Content 350 seeds

£1.55
Strawflower Seeds - Forever Mix

Average Packet Content 850 seeds

£0.99
Gaura Seeds - The Bride

Average Packet Content 25 seeds

£3.49
Coleus Seeds - Rainbow Mix

Average Packet Content 100 seeds

£1.99
Sweet Pea Seeds - Anne Gregg

Average Packet Content 25 seeds

£2.99
Cornflower Seeds - Classic Fantastic

Average Packet Content 200 Seeds

£1.75
Phacelia Seeds - Lacy

Average Packet Content 900 seeds

£1.99
Cowslip Seeds

Average Packet Content 120 seeds

£2.99
Poppy Californian Seeds - Vivid Mix

Average Packet Content 500 seeds

£1.75
Poppy Seeds - Lilac Pompom

Average Packet Content 900 seeds

£1.99
Love-in-a-Mist Seeds - Persian Jewels Mix

Average Packet Content 750 seeds

£1.99
Cornflower Seeds - Blue Diadem

Average Packet Content 190 seeds

£2.49
Larkspur Seeds - 'Stock' Flowered Mix

Average Packet Content 450 Seeds

£1.75
Calendula Seeds - Snow Princess

Average Packet Content 120 seeds

£2.99
Calendula Seeds - Kinglet Mix

Average Packet Content 100 seeds

£2.49
Sweet Pea Seeds - Distant Horizons

Average Packet Content 50 seeds

£4.49
Sweet Pea Seeds - Kingfisher

Average Packet Content 25 seeds

£2.99
Forget-Me-Not Seeds - Spring Symphony Blue

Average Packet Content 400 seeds

£2.49
Oxalis Seeds - Valdivensis

Average Packet Content 25 seeds

£1.99
Nemesia Seeds - Masquerade

Average Packet Content 150 seeds

£1.99
Poppy Californian Seeds - XL Jelly Beans

Average Packet Content 150 seeds

£2.99
Antirrhinum Seeds - Twilight Mix

Average Packet Content 80 seeds

£2.99
Gypsophila Seeds - Covent Garden White

Average Packet Content 1800 Seeds

£1.75
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This month sow the wildflowers primrose and cowslip in a cold frame.

Sweet peas can be sown in a cold frame or unheated greenhouse to over-winter. The young plants can be planted out in March/April to obtain early blooms.

Once summer bedding plants have been removed from your borders, plant spring flowering plants such as bellis (daisy), pansy, polyanthus, primrose and wallflowers along with spring flowering bulbs. When rose blooms have faded a last deadheading of roses can be done, and taller stems may be slightly shortened so that movement from wind can be reduced.

Head to our blog for more September advice.

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