Best Flower Seeds to Sow in September

Explore flower seeds that are well suited to sowing in September. Browse popular flower seeds to sow this month, with seasonal seed varieties for gardens, pots, borders and allotments.

120 products

120products

Meconopsis 'Lingholm' (Ex Grandis)

Blue Poppy, Himalayan Poppy, 'Fertile Blue Gr…

£3.95

Papaver Somniferum Ultimate Mixture

Opium Poppy

£3.65

Achillea Millefolium Mix

Common Yarrow, Devil's Nettle, Hundred-Leaved…

£2.75

Meconopsis Grandis

Blue Poppy

£3.95

Papaver Macrostomum Black Magic

Black Magic Poppy, Persian Poppy

£3.95

Meconopsis Baileyi

Previously Called Meconopsis Betonicifolia

£3.75

Angelica Sylvestris Ebony

Vicars Mead

£3.95

Muhlenbergia Capillaris

Pink Muhly Grass, Muhly Grass, Hairawn Muhly,…

£3.45

Papaver Somniferum 'Lauren's Grape'

£3.70

Fibigia Clypeata

£2.95

Rhinanthus Minor

Yellow Rattle, Cockscomb, Hay Rattle

£2.60

Astrantia Major 'Ruby Wedding Series'

Masterwort 'Ruby Wedding'

£3.75

Helleborus Orientalis 'Black Beauty'

£3.65

Papaver Somniferum Summer Blaze

Opium Poppy

£2.90

Calendula Officinalis

Common Marigold, Pot Marigold

£2.80

Meconopsis Himalayan Velvet (Lingholm - Ex Grandis)

Himalayan Poppy, Meconopsis Ex Grandis

£3.75

Helleborus Orientalis Plantworld Doubles

£3.95

Trillium Chloropetalum

Common Trillium

£4.95

Stipa Lessingiana

Feather Grass, Hair Grass

£3.25

Delphinium Ajacis Mix

£2.75