What to Sow When - Month by Month Guide to Flower Seeds
Our guide gives a month to month overview of what flower seeds to sow. Where it states "indoors" next to the flower name this means that the seed should be sown undercover, for example in a greenhouse or on a windowsill. Refer to the seed packet for the exact conditions required but many of the seeds sown" indoors" will require you to provide a warm environment for germination. Where it states "outdoors" next to the flower name this means that you can sow the seed where you want the plants to grow and flower in the garden. (You can also plant the ones that state "outdoors" into rows and transplant them into their permanent positions when larger).
Flowers to Sow in January
Agastache (Indoors)
Antirrhinum (Indoors)
Begonia (Indoors)
Carnation (Indoors)
Geranium - Pelargonium (Indoors)
Gerbera (Indoors)
Lobelia (Indoors)
Salvia (Indoors)
Sweet Peas (Indoors)
Sweet William (Indoors)
Flowers to Sow in February
Achillea (Indoors)
Agastache (Indoors)
Ageratum (Indoors)
Alyssum (Indoors)
Antirrhinum (Indoors)
Aquilegia (Indoors)
Aster (Indoors)
Aubrietia (Indoors)
Begonia (Indoors)
Bellis (Indoors)
Bizzie Lizzie (Indoors)
Black Eyed Susan (Indoors)
Borage (Indoors)
Calendula (Indoors)
Campanula (Indoors)
Candytuft (Indoors)
Carnation (Indoors)
Catananche (Indoor)
Catmint - Nepeta (Indoors)
Cineraria (Indoors)
Cobaea (Indoors)
Coleus (Indoors)
Convolvulus (Indoors)
Cosmos (Indoors)
Cranesbill - Geranium (Outdoors)
Dahlia (Indoors)
Delphinium (Indoors)
Echinacea (Indoors)
Eryngium - Sea Holly (Indoors)
Foxglove (Indoors)
Gaillardia (Outdoors)
Gazania (Indoors)
Geranium - Pelargonium (Indoors)
Gerbera (Indoors)
Hollyhock (Indoors)
Larkspur (Indoors)
Lavender (Indoor)
Lobelia (Indoors)
Love in the Mist - Nigella (Indoors)
Lupin (Indoor)
Malva (Indoors)
Marigold (Indoors)
Mesembryanthemums - Livingstone Daisy (Indoors)
Mimulus (Indoors)
Morning Glory (Indoors)
Nemesia (Indoors)
Nicotiana (Indoors)
Night Phlox (Indoors)
Osteospermum (Indoors)
Pansy (Indoors)
Passion Flower (Indoors)
Penstemons (Indoors)
Petunia (Indoors)
Primrose (Indoors)
Rudbeckia (Indoors)
Rudbeckia (Outdoors)
Salvia (Indoors)
Scabious (Indoors)
Statice (Indoors)
Stock (Indoors)
Sweet Peas (Indoors)
Sweet William (Indoors)
Tagetes (Indoors)
Verbena bonariensis (Indoors)
Viola (Indoors)
Flowers to Sow in March
Achillea (Indoors)
Agastache (Indoors)
Ageratum (Indoors)
Alyssum (Indoors)
Antirrhinum (Indoors)
Aquilegia (Indoors)
Aster (Indoors)
Aubrietia (Indoors)
Begonia (Indoors)
Bizzie Lizzie (Indoors)
Black Eyed Susan (Indoors)
Borage (Indoors)
Calendula (Indoors)
Calendula (Outdoors)
Californian Poppy (Outdoors)
Campanula (Indoors)
Campanula (Outdoors)
Candytuft (Indoors)
Candytuft (Outdoors)
Carnation (Indoors)
Catananche (Indoors)
Catmint - Nepeta (Indoors)
Cineraria (Indoors)
Clarkia (Outdoors)
Cobaea (Indoors)
Coleus (Indoors)
Convolvulus (Indoors)
Convolvulus (Outdoors)
Cornflower (Outdoors)
Cosmos (Indoors)
Cranesbill - Geranium (Outdoors)
Dahlia (Indoors)
Delphinium (Indoors)
Echinacea (Indoors)
Eryngium - Sea Holly (Indoors)
Evening Primrose (Outdoors)
Foxglove (Indoors)
Gaillardia (Outdoors)
Gazania (Indoors)
Geranium - Pelargonium (Indoors)
Gerbera (Indoors)
Godetia (Outdoors)
Gypsophila (Outdoors)
Hollyhock (Indoors)
Larkspur (Indoors)
Larkspur (Outdoors)
Lavatera (Outdoors)
Lavender (Indoors)
Lobelia (Indoors)
Love in the Mist - Nigella (Indoors)
Love in the Mist - Nigella (Outdoors)
Lupin (Indoors)
Malva (Indoors)
Marigold (Indoors)
Mesembryanthemums - Livingstone Daisy (Indoors)
Mimulus (Indoors)
Morning Glory (Indoors)
Nasturtium (Indoors)
Nemesia (Indoors)
Nicotiana (Indoors)
Night Phlox (Indoors)
Osteospermum (Indoors)
Pansy (Indoors)
Passion Flower (Indoors)
Penstemons (Indoors)
Petunia (Indoors)
Phlox (Indoors)
Poppy (Outdoors)
Primrose (Indoors)
Red Clover (Outdoors)
Rudbeckia (Indoors)
Rudbeckia (Outdoors)
Salvia (Indoors)
Scabious (Indoors)
Statice (Indoors)
Stock (Indoors)
Sunflowers (Indoors)
Sweet Peas (Indoors)
Sweet Peas (Outdoors)
Tagetes (Indoors)
Verbena bonariensis (Indoors)
Viola (Indoors)
Virginia Stocks (Outdoors)
Zinnia (Indoors)
Flowers to Sow in April
Achillea (Indoors)
Ageratum (Indoors)
Alyssum (Indoors)
Aquilegia (Indoors)
Aster (Indoors)
Aubrietia (Indoors)
Bizzie Lizzie (Indoors)
Black Eyed Susan (Indoors)
Borage (Indoors)
Calendula (Indoors)
Calendula (Outdoors)
Californian Poppy (Outdoors)
Campanula (Outdoors)
Candytuft (Indoors)
Candytuft (Outdoors)
Catananche (Indoor)
Catmint - Nepeta (Indoors)
Cineraria (Indoors)
Clarkia (Outdoors)
Cobaea (Indoors)
Coleus (Indoors)
Convolvulus (Indoors)
Convolvulus (Outdoors)
Cornflower (Outdoors)
Cosmos (Indoors)
Cranesbill - Geranium (Outdoors)
Dahlia (Indoors)
Delphinium (Indoors)
Echinacea (Indoors)
Eryngium - Sea Holly (Indoors)
Evening Primrose (Outdoors)
Foxglove (Indoors)
Gaillardia (Outdoors)
Gazania (Indoors)
Gerbera (Indoors)
Godetia (Outdoors)
Gypsophila (Outdoors)
Hesperis - Sweet Rocket (Indoors)
Hesperis - Sweet Rocket (Outdoors)
Hollyhock (Indoors)
Larkspur (Indoors)
Larkspur (Outdoors)
Lavatera (Outdoors)
Lavender (Indoor)
Love in the Mist - Nigella (Indoors)
Love in the Mist - Nigella (Outdoors)
Lupin (Indoor)
Malva (Indoors)
Marigold (Indoors)
Mesembryanthemums - Livingstone Daisy (Indoors)
Mimulus (Indoors)
Morning Glory (Indoors)
Nasturtium (Indoors)
Nasturtium (Outdoors)
Nemesia (Indoors)
Nicotiana (Indoors)
Night Phlox (Indoors)
Osteospermum (Indoors)
Pansy (Indoors)
Passion Flower (Indoors)
Penstemons (Indoors)
Petunia (Indoors)
Phlox (Indoors)
Poppy (Outdoors)
Primrose (Indoors)
Red Clover (Outdoors)
Rudbeckia (Indoors)
Rudbeckia (Outdoors)
Salvia (Indoors)
Scabious (Indoors)
Statice (Indoors)
Stock (Indoors)
Sunflowers (Indoors)
Sunflowers (Outdoors)
Sweet Peas (Outdoors)
Tagetes (Indoors)
Teasel (Indoors)
Teasel (Outdoors)
Verbena bonariensis (Indoors)
Viola (Indoors)
Virginia Stocks (Outdoors)
Wallflower, bedding (Outdoors)
Zinnia (Indoors)
Zinnia (Outdoors)
Flowers to Sow in May
Achillea (Indoors)
Aquilegia (Indoors)
Aubrietia (Indoors)
Borage (Indoors)
Calendula (Outdoors)
Californian Poppy (Outdoors)
Campanula (Outdoors)
Candytuft (Outdoors)
Catananche (Indoors)
Catmint - Nepeta (Indoors)
Clarkia (Outdoors)
Convolvulus (Outdoors)
Cornflower (Outdoors)
Cranesbill - Geranium (Outdoors)
Delphinium (Indoors)
Echinacea (Indoors)
Eryngium - Sea Holly (Indoors)
Evening Primrose (Outdoors)
Forget-Me-Nots (Indoors)
Forget-Me-Nots (Outdoors)
Foxglove (Indoors)
Gaillardia (Outdoors)
Gerbera (Indoors)
Godetia (Outdoors)
Gypsophila (Outdoors)
Hesperis - Sweet Rocket (Indoors)
Hesperis - Sweet Rocket (Outdoors)
Hollyhock (Indoors)
Larkspur (Outdoors)
Lavatera (Outdoors)
Lavender (Indoors)
Love in the Mist - Nigella (Outdoors)
Lupin (Indoors)
Malva (Indoors)
Mimulus (Indoors)
Nasturtium (Outdoors)
Osteospermum (Indoors)
Pansy (Indoors)
Passion Flower (Indoors)
Poppy (Outdoors)
Primrose (Indoors)
Red Clover (Outdoors)
Scabious (Indoors)
Sunflowers (Indoors)
Sunflowers (Outdoors)
Sweet William (Indoors)
Teasel (Indoors)
Teasel (Outdoors)
Verbena bonariensis (Indoors)
Virginia Stocks (Outdoors)
Wallflower, bedding (Outdoors)
Zinnia (Outdoors)
Flowers to Sow in June
Achillea (Indoors)
Aquilegia (Indoors)
Aubrietia (Indoors)
Borage (Indoors)
Catananche (Indoors)
Cranesbill - Geranium (Outdoors)
Delphinium (Indoors)
Echinacea (Indoors)
Eryngium - Sea Holly (Indoors)
Forget-Me-Nots (Indoors)
Forget-Me-Nots (Outdoors)
Gaillardia (Outdoors)
Gerbera (Indoors)
Hesperis - Sweet Rocket (Indoors)
Hesperis - Sweet Rocket (Outdoors)
Lavender (Indoors)
Lupin (Indoors)
Malva (Indoors)
Nasturtium (Outdoors)
Pansy (Indoors)
Primrose (Indoors)
Red Clover (Outdoors)
Scabious (Indoors)
Sweet William (Indoors)
Teasel (Indoors)
Teasel (Outdoors)
Verbena bonariensis (Indoors)
Virginia Stocks (Outdoors)
Wallflower, bedding (Outdoors)
Zinnia (Outdoors)
Flowers to Sow in July
Achillea (Indoors)
Aquilegia (Indoors)
Aubrietia (Indoors)
Borage (Indoors)
Catananche (Indoors)
Delphinium (Indoors)
Echinacea (Indoors)
Eryngium - Sea Holly (Indoors)
Forget-Me-Nots (Indoors)
Forget-Me-Nots (Outdoors)
Gaillardia (Outdoors)
Hesperis - Sweet Rocket (Indoors)
Hesperis - Sweet Rocket (Outdoors)
Lavender (Indoors)
Pansy (Indoors)
Primrose (Indoors)
Red Clover (Outdoors)
Scabious (Indoors)
Sweet William (Indoors)
Teasel (Indoors)
Teasel (Outdoors)
Verbena bonariensis (Indoors)
Virginia Stocks (Outdoors)
Wallflower, bedding (Outdoors)
Flowers to Sow in August
Borage (Indoors)
Borage (Outdoors)
Calendula (Outdoors)
Californian Poppy (Outdoors)
Candytuft (Outdoors)
Clarkia (Outdoors)
Convolvulus (Outdoors)
Cornflower (Outdoors)
Evening Primrose (Outdoors)
Godetia (Outdoors)
Gypsophila (Outdoors)
Hollyhock (Indoors)
Larkspur (Outdoors)
Love in the Mist - Nigella (Outdoors)
Pansy (Indoors)
Poppy (Outdoors)
Red Clover (Outdoors)
Sweet Williams (Indoors)
Teasel (Indoors)
Teasel (Outdoors)
Virginia Stocks (Outdoors)
Flowers to Sow in September
Borage (Outdoors)
Calendula (Outdoors)
Californian Poppy (Outdoors)
Candytuft (Outdoors)
Clarkia (Outdoors)
Convolvulus (Outdoors)
Cornflower (Outdoors)
Eryngium - Sea Holly (Outdoors)
Evening Primrose (Outdoors)
Godetia (Outdoors)
Gypsophila (Outdoors)
Hollyhock (Indoors)
Larkspur (Outdoors)
Love in the Mist - Nigella (Outdoors)
Lupin (Indoors)
Poppy (Outdoors)
Red Clover (Outdoors)
Sweet Peas (Outdoors)
Virginia Stocks (Outdoors)
Flowers to Sow in October
Borage (Outdoors)
Californian Poppy (Outdoors)
Candytuft (Outdoors)
Clarkia (Outdoors)
Convolvulus (Outdoors)
Cornflower (Outdoors)
Eryngium - Sea Holly (Outdoors)
Godetia (Outdoors)
Gypsophila (Outdoors)
Larkspur (Outdoors)
Love in the Mist - Nigella (Outdoors)
Lupin (Indoors)
Poppy (Outdoors)
Red Clover (Outdoors)
Sweet Peas (Outdoors)
Flowers to Sow in November
Eryngium - Sea Holly (Outdoors)
Flowers to Sow in December
None - Start browsing seed catalogues for next year!