Flower seed Sowing Calendar, when to sow flower seeds month by month



The flower seed sowing calendar is to be used as a guide only for the UK, for other countries you will have to work out the times for sowing the seed, comparing the UK seasons to your own seasons. You will notice that there is a difference between sowing flower seeds from one mail order catalogue to another and some companies do not even give sowing information! so we can assume there is no set time to sow seeds. I have put this flower seed sowing calendar together as a guide to assist you. Note not all plant seed in the catalogue are listed here, sowing information is listed in the catalogue.

Abbreviations :-
A annual
P perennial
B biennial		 HB hardy biennial
HHA half hardy annual
HHP half hardy perennial
HP hardy perennial
HRP hardy rockery perennial		 GA glasshouse annual
GB glasshouse biennial
GP glasshouse perennial / pot plant
TA tender annual
TP tender perennial

 

What flower seeds to sow January

Ageratum A
Anagallis Monellii P
Anchusa A
Antirrhinum P
Aralia GP
Asarina A climber
Asparagus GP
Aster A

Begonia TA
Bidens HHA
Brachycome HHA
Buddleia HP

Calceolaria P treat as A
Carnation A
ChrysanthemumTP
Coleus GP
Coreopsis HP
Corydalis HRP
Cosmos A
Cyclamen GP

Dahlia TP
Delphinium P
Dianthus A
Diascia HHA

Echinops HP
Erinus HRP
Euphorbia HP

Fuchsia A

Gazania TP
Gentiana HRP
Geranium TP
Gerbera TP (pot plant)
Gesneria GP
Gloxinia GP
Godetia A

Heliotrope TP
Hypericum HP

Impatiens TA

Kochia TA

Laurentia A
Leycesteria
Linaria A
Lisianthus A
Lobelia A


Marigold TA
Matricaria TP
Melampodium A
Mesembryanthemum TA
Monstera sow asap

Nasturtium A
Nemesia TA

Pansy P treat as B
Penstemon TP
Pentas TP
Phlox TA
Portulaca HHP

Rhodochiton A climber

Salvia A
Salvia P
Schizanthus TA
Sedum HRP
Statice HA
Stock TA
Strawberry HP
Streptocarpus GP

Teucrium HRP
Thymophylla A
Thymus HRP

Verbena TA
Viola odorata P
 What flower seeds to sow February

Agastache P
Ageratum A
Allysum A
Anagallis Monellii P
Antirrhinum P
Aralia GP
Asarina a CLIMBER
Asparagus GP
Asphodeline HP
Aster A
Auricula HP

Balsam HHA
Begonia TA
Bidens Aurea HHA
Brachycome HHA
Buddleia HP

Calandrinia P grow as A
Calceolaria P treat as A
Calendula A
Campanula B
Capsicum A
Carnation A
Celosia TA
Centaurea A
Cineraria HHP
Coleus GP
Cordyline GP
Coreopsis HP
Corydalis HRP
Cosmos A
Cuphea TP
Cyclamen GP
Cynara HP

Dahlia TP
Delphinium P
Dianthus A
Diascia HHA

Echinops HP
 Echium
Erigeron HP
Erinus HR
Eucalyptus T&HHP
Euphorbia HP
Exacum GA

Fuchsia A

 Gaultheria
Gazania TP
Gentiana HRP
Geranium TP
Gerbera TP(pot plant)
Geum HP
Gloxinia GP
Godetia A
Grevillea GP
Gypsophila A

Heliopsis HP
Heliotrope TP
Hemerocallis HP
Hypoestes TA

Impatiens TA
Imp New Guinea TA
Ipomoea A climber

Kalanchoe GA
Kochia TA

Lagurus A or B
Laurentia A
Leycesteria
Linaria A
Lisianthus A
Lobelia A


Marigold TA
Matricaria TP
Melampodium A
Mesembryanthemum TA
Mimulus TP grow as A
Monarda HP
Monstera sow asap

Nasturtium A
Nemesia TA
Nicotiana TA

Pansy P treat as A
Papaver A
Penstemon TP
Pentas TP
Perilla A
Petunia TA
Phlox TA
Platycodon GP
Portulaca HHP
Pyrethrum HP

Rhodochiton A climber
Rudbeckia B treat as A

Salpiglossis TA
Salvia A
Salvia P
Schizanthus TA
Sedum HRP
Solanum GP
Statice HA
Strawberry HP
Streptocarpus GP

Teucrium HRP
Thunbergia A climber
Thymophylla A
Thymus HRP
Tomato TA

Verbena TA
Viola odorata P
Vinca A

Zinnia TA
 What flower seeds to sow March

Abutilion TP
Acanthus HHP
Achillea HP
Achimenes GP
Aconitum HP
Agastache P
Ageratum A
Alchemilla HP
Alstroemeria HHP
Allysum A
Allysum P
Amaranthus A
Ammobium A
Anacyclus HRP
Anagallis Monellii P
Anaphalis HP
Anchusa P
Anemone A
Anemone P
Anthemis HP
Antirrhinum P
Aqualegia HP
Arabis HRP
Aralia GP
Arenaria HRP
Armeria HRP
Asarina A climber
Asparagus GP
Asphodeline HP
Aster A
Aster HP
Astilbe HP
Astrantia HP
Aubrietia HRP
Auricula HP

Balsam HHA
Begonia TA
Bergenia HP
Bidens Aurea HHA
Brachycome HHA
Browallia GP
Buddleia HP

Calandrinia P grow as A
Calceolaria P treat as A
Campanula HP
Campanula B
Capsicum A
Carnation P
Catananche P
Celosia TA
Centaurea A
Cephalaria HP
Cerastium HRP
Chrysanthemum A / P
Cineraria HHP
Coleus GP
Cordyline GP
Coreopsis HP
Cortaderia HP
Corydalis HRP
Cosmos A
Cuphea TP
Cyclamen GP
Cyclamen HP
 Cynara HP
Cyperus GP

Dahlia TP
Delphinium P
Dianthus A
Dianthus P
Diascia HHA
Dicentra HP
Digitalis HP
Doronicum HP
Draba HRP
Dracaena GP

Echinops HP
 Echium
Erigeron HP
Erinus HRP
Eryngium HP
Eschscholzia A
Eucalyptus T&HHP
Euphorbia HP
Exacum GA

Fuchsia A

 Gaultheria
Gentiana HRP
Geranium TP
Geranium HP
Gerbera TP(pot plant)
Geum HP
Godetia A
Green Manures
Grevillea GP
Gypsophila A

Harpephyllum GP
Helianthemum HRP
Helianthus A
Heliopsis HP
Heliotrope P
Hemerocallis HP
Herniaria HP
Heuchera HP
Hypoestes TA

Impatiens TA
Imp New Guinea TA
Ipomoea A climber

Jacaranda GP
Jasione HP

Kalanchoe GA
Kniphofia HP
Kochia TA

Lagurus A or B
Lathyrus HP
Lavender HP
Layia HA
Leontopodium HRP
Lewisia HRP
 Leycesteria
Liatris HP
Lilium HP
Linaria A
Linum HP
Lobelia A
Lychnis HP
Lysimachia HP

Marigold TA
Matricaria TP
Meconopsis HP
Mimulus P grow as A
Melampodium A
Mesembryanthemum TA
Mina HHA
Monarda HP
Monstera sow asap

Nasturtium A
Nemesia TA
Nicotiana TA

Oenothera HP
Oriental Poppy HP
Osteospermum A

Pansy P treat as A
Papaver A/B
Passiflora TP
Penstemon TP
Perilla A
Petunia TA
Phlox TA
Physalis HP
Physostegia HP
Plumbago GP
Portulaca HHP
Potentilla HP
Pulsatilla HP
Pyrethrum HP

Rehmannia TP
Rhodochiton A climber
Ricinus A
Rudbeckia B treat as A

Salpiglossis TA
Salvia A
Salvia P
Santolina HHP
Sanvitalia HHA
Saponaria HRP
Saxifraga HP
Scabiosa HHP
Schizanthus TA
Sedum HRP
Sempervivum HRP
Sidalcea HP
Silene HRP
Solanum GP
Solidago HP
Statice A & P
Statice HA
Streptocarpus GP
 Sweet Pea A
Sweet William A

Tagetes TA
Teucrium HRP
Thalictrum HP
Thunbergia A climber
Thymophylla A
Thymus HRP
Tomato TA
Tunica HRP

Verbena TA
Veronica HP
Vinca A
Yucca GP

Zinnia TA


 		What flower seeds to sow April

Abutilion TP
Acanthus HHP
Achillea HP
Achimenes GP
Aconitum HP
Acroclinium HA
Ageratum A
Alchemilla HP
Alstroemeria HHP
Allysum A
Allysum P
Amaranthus A
Ammobium A
Anacyclus HRP
Anaphalis HP
Anchusa P
Anemone A
Anemone P
Anthemis HP
Antirrhinum P
Aqualegia HP
Arabis HRP
Aralia GP
Arenaria HRP
Armeria HRP
Asparagus GP
Asphodeline HP
Aster A
Aster HP
Astilbe HP
Astrantia HP
Aubrietia HRP
Auricula HP

Balsam HHA
Begonia TA
Bergenia HP
Brachycome HHA
Broom HP
Buddleia HP
Bupleurum A

Calceolaria P grow as A
Campanula HP
Capsicum A
Carnation P
Catananche P
Celosia TA
Centaurea A
Cephalaria HP
Cerastium HRP
Chrysanthemum A / P
Cineraria HHP
Coleus GP
Cordyline GP
Cortaderia HP
Cosmos A
Cuphea TP
Cyclamen GP
Cyclamen HP
Cynara HP
Cyperus GP

Dahlia TP
Delphinium P
Dianthus P
Diascia HHA
Dicentra HP
Digitalis HP
Doronicum HP
Draba HRP
Dracaena GP

Echinops HP
 Echium
Erigeron HP
Erinus HRP
Eryngium HP
Eschscholzia A
Eucalyptus T&HHP
Euphorbia HP

Felicia HHA
Freesia GP

 Gaultheria
Gentiana HRP
Geranium HP
Gesneria GP
Geum HP
Godetia A
 Green Manures
Grevillea GP
Gypsophila A

Harpephyllum GP
Helianthemum HRP
Helianthus A
Helichrysum TA
Heliopsis HP
Heliotrope P
Hemerocallis HP
Herniaria HP
Heuchera HP
Hypoestes TA

Impatiens TA
Ipomoea A climber

Jacaranda GP
Jasione HP

Kniphofia HP
Kochia TA

Lagurus A or B
Lathyrus HP
Lavender HP
Layia HA
Leontopodium HRP
Lewisia HRP
Liatris HP
Lilium HP
LinumHP
Lobelia A
Lychnis HP
Lysimachia HP

Marigold TA
Matricaria TP
Meconopsis HP
Mimulus P grow as A
Mesembryanthemum TA
Mina HHA
Monarda HP
Monstera sow asap

Nasturtium A
Nepeta HP
Nicotiana TA

Oenothera HP
Osteospermum A

Papaver A/B
Passiflora TP
Perilla A
Phlox TA
Physalis HP
Physostegia HP
Plumbago GP
Potentilla HP
Pulsatilla HP
Pyrethrum HP

Rehmannia
Rhodochiton
Ricinus

Salpiglossis TA
Salvia A
Salvia P
Santolina HHP
Sanvitalia HHA
Saponaria HRP
Saxifraga HP
Scabiosa HHP
Sedum HRP
Sempervivum HRP
Sidalcea HP
Silene HRP
Solidago HP
Statice A & P)
Statice HA
Streptocarpus GP
Sweet Pea A

Tagetes TA
Teucrium HRP
Thalictrum HP
Thunbergia A climber
Thymophylla A
ThymusHRP
Tomato TA
Torenia GA
Tunica HRP

Verbena TA
Veronica HP
Viola P treat as B

Yucca GP

Zinnia TA
What flower seeds to sow May

Abutilion TP
Acanthus HHP
Achillea HP
Achimenes GP
Aconitum HP
Acroclinium HA
Ageratum A
Alchemilla HP
Alstroemeria HHP
Amaranthus A
Anacyclus HRP
Anchusa P
Anemone P
Anthemis HP
Antirrhinum P
Aqualegia HP
Arabis HRP
Aralia GP
Arenaria HRP
Armeria HRP
Asparagus GP
Asphodeline HP
Aster A
Aster HP
Astilbe HP
Astrantia HP
Aubrietia HRP

Begonia TA
Bellis P treat as A
Bergenia HP
Buddleia HP
Bupleurum A

Campanula HP
Canterbury Bells HB
Candytuft HRP
Capsicum A
Catananche P
Cephalaria HP
Cerastium HRP
Chrysanthemum A / P
Coleus GP
Cortaderia HP
Cosmos A
Cuphea TP
Cyclamen HP
Cyperus GP

Dahlia TP
Delphinium P
Dianthus P
Dicentra HP
Digitalis HP
Doronicum HP
Draba HRP
Dracaena GP

Echeveria P
Echium
Erigeron HP
Eryngium HP
Eschscholzia A
Eucalyptus T&HHP
Euphorbia HP

Felicia HHA
Freesia GP

Gaillardia HP
Gentiana HRP
Gerbera TP(pot plant)
Gesneria GP
Geum HP
Green Manures
Gypsophila A

Harpephyllum GP
Helianthemum HRP
Helianthus A
Helichrysum TA
Heliopsis HP
Herniaria HP
Heuchera HP
Hesperis
Hollyhock HP

Impatiens TA
Ipomoea A climber

Jacaranda G
Jasione HP

Kniphofia HP
Kochia TA

Lathyrus HP
Lavender HP
Layia HA
Leontopodium HRP
Liatris HP
Lilium HP
Linum HP
Lychnis HP
Lysimachia HP

Marigold TA
Matricaria TP
Meconopsis HP
Monarda HP
Monstera sow asap

Nasturtium A
Nepeta HP

Oenothera HP
Oriental Poppy HP

Papaver A/B
Passiflora TP
Phlox TA
Physalis HP
Physostegia HP
Plumbago GP
Potentilla HP
Primula HP/TP/GP
Polyanthus HP/TP
Primrose HP/TP
Pulsatilla HP
Pyrethrum HP

Rehmannia TP
Rhodochiton A climber

Salvia P
Santolina HHP
Sanvitalia HHA
Saponaria HRP
Saxifraga HP
Scabiosa HHP
Sedum HRP
Sempervivum HRP
Sidalcea HP
Silene HRP
Solidago HP
Streptocarpus GP
Sweet Pea A
Sweet William B

Tagetes TA
Teucrium HRP
Thalictrum HP
Thymus HRP
Tunica HRP

Veronica HP
Viola P treat as A

Yucca GP

Zinnia TA


 What flower seeds to sow June

Acanthus HHP
Achillea HP
Aconitum HP
Alchemilla HP
Allysum P
Amaranthus A
Anchusa P
Anthemis HP
Arabis HRP
Aralia GP
Arenaria HRP
Armeria HRP
Asparagus GP
Asphodeline HP
Aster HP
Astilbe HP
Astrantia HP
Aubrietia HRP

Bellis P treat as A
Bergenia HP
Bupleurum A

Campanula HP
Canterbury Bells HB
Candytuft HRP
Capsicum A
Cephalaria HP
Cerastium HRP
Cheiranthus B
Chrysanthemum P
Coleus GP
Coreopsis HP
Cortaderia HP

Delphinium P
Dianthus P
Digitalis HP
Doronicum HP

Echeveria P
Echium
Erigeron HP
Erysimum HP
Eschscholzia A
Euphorbia HP

Felicia HHA

Gaillardia HP
Gerbera TP(pot plant)
Geum HP
Green Manures
Gypsophila HP

Helianthemum HRP
Helianthus A
Helichrysum P
Herniaria HP
Heuchera HP
Hesperis
Hollyhock HP

Ipomoea A climber

Jasione HP

Kniphofia HP
Kochia TA

Lathyrus HP
Lavender HP
Leontopodium HRP
Liatris HP
Lilium HP
Linum HP
Lupin HP
Lychnis HP
Lysimachia HP
Lythrum HP

Matricaria TP
Meconopsis HP
Monarda HP
Monstera sow asap
Mysotis HB

Nepeta HP

Oenothera HP
Oriental Poppy HP
Ornamental Brassica HHA

Physalis HP
Physostegia HP
Potentilla HP
Primula HP/TP/GP
Polyanthus HP/TP
Primrose HP/TP
Pulsatilla HP
Pyrethrum HP

Sagina HP
Saponaria HRP
Saxifraga HP
Sidalcea HP
Silene HRP
Sisyrinchium HP
Solidago HP
Stock B
Streptocarpus GP
Sweet William B

Thalictrum HP
Tunica HRP

Veronica HP
Viola P treat as A

Wallflower B sow outdoors 		What  flower seeds to sow July

Acanthus HHP
Achillea HP
Aconitum HP
Alchemilla HP
Allysum P
Anchusa P
Antennaria HRP
Anthemis HP
Arabis HRP
Aralia GP
Arenaria HRP
Armeria HRP
Asparagus GP
Asphodeline HP
Aster HP
Astilbe HP
Astrantia HP
Aubrietia HRP

Bellis P treat as A
Bergenia HP
Browallia GP

Campanula HP
Canterbury Bells HB
Candytuft HRP
Cephalaria HP
Cerastium HRP
Cheiranthus B
Chrysanthemum P
Cineraria GB
Coleus GP
Coreopsis HP
Cortaderia HP
Cyclamen GP

Dianthus P
Digitalis HP
Doronicum HP

 Echium
Erysimum HP
Euphorbia HP

Felicia HHA

Gerbera TP(pot plant)
Green Manures
Gypsophila HP

Helenium HP
Helianthus A
Helichrysum P
Herniaria HP
Heuchera HP
Hollyhock HP

Inula HP

Jasione HP

Kniphofia
Kochia

Lathyrus HP
Lavender HP
Leontopodium HRP
Lewisia HRP
Liatris HP
Lilium HP
Linum HP
Lupin HP
Lychnis HP
Lysimachia HP
Lythrum HP

Matricaria TP
Monarda HP
Monstera sow asap
Mysotis HB

Oenothera HP
Ornamental Brassica HHA

Pansy HP
Papaver HP
Physalis HP
Physostegia HP
Potentilla HP
Primula HP/TP/GP
Polyanthus HP/TP
Primrose HP/TP
Pulsatilla HP
Pyrethrum HP

Sagina HP
Saponaria HRP
Saxifraga HP
Sidalcea HP
Silene HRP
Sisyrinchium HP
Solidago HP
Stachys HP
Sweet William B

Thalictrum HP
Tunica HRP

Verbascum HB
Viola P treat as A

Wallflower B sow in g/h 		What flower seeds to sow August

Acanthus HHP
Achillea HP
Aconitum HP
Alchemilla HP
Allysum P
Anchusa P
Anthemis HP
Arabis HRP
Aralia GP
Arenaria HRP
Armeria HRP
Asparagus GP
Asphodeline HP
Aster HP
Astilbe HP
Astrantia HP
Aubrietia HRP

Bergenia HP

Calceolaria GB
Campanula HP
Candytuft HRP
Cephalaria HP
Cerastium HRP
ChrysanthemumP
Cineraria GB
Coleus GP
Coreopsis HP
Cortaderia HP
Cyclamen GP

Digitalis HP
Doronicum HP

Euphorbia HP

Felicia HHA

 Green Manures
Gypsophila HP

Helenium HP
Helianthus A
Helichrysum P
Herniaria HP
Heuchera HP

Inula HP

Jasione HP

Kniphofia HP
Kochia TA

Lathyrus HP
Lavender HP
Leontopodium HRP
Liatris HP
Lilium HP
Linum HP
Lupin HP
Lychnis HP
Lysimachia HP
Lythrum HP

Monarda HP
Monstera sow asap
Mysotis HB

Oenothera HP

Pansy HP
Papaver HP
Physalis HP
Physostegia HP
Potentilla HP
Primula HP/TP/GP
Polyanthus HP/TP
Pulsatilla HP

Ranunculas HP

Sagina HP
Saxifraga HP
Sidalcea HP
Sisyrinchium HP
Solidago HP
Stachys HP

Thalictrum HP
Tunica HRP

Verbascum HB
Viola P treat as A

Wallflower B sow in g/h
What seeds to sow September

Androsace HP
Aqualegia HP
Aralia GP
Asparagus GP

Calceolaria GB
Candytuft HRP
Carnation P
Chrysanthemum P
Coleus GP
Cyclamen GP
Cyclamen HP

Delphinium P
Digitalis HP

Echinacea
Echinops
Erysimum HP

Foxglove HP

Gazania TP
Geranium TP
Green Manures

Helenium HP

Kochia TA
Kniphofia HP

Lavender HP
Lettuce - Late Sown varieties
Lupin HP

Monstera sow asap

Pansy HP
Papaver HP

Ranunculas HP
Rhodochiton A climber

Sagina HP
Schizanthus TA
Sisyrinchium HP
Spring Onions Winter Hardy
Stachys HP
Statice A & P
Sweet Pea A


Verbascum HB
Viola P treat as A

 What seeds to sow October

Androsace HP
Aqualegia HP
Aralia GP
Asparagus GP

Calceolaria GB
Calendula A
Catananche
Chrysanthemum P
Coleus GP
Cyclamen GP
Cyclamen HP

Delphinium P
Dicentra HP

Gazania TP
Geranium TP
 Green Manures

Helenium HP

Kochia TA
Kniphofia HP

Lettuce - Late Sown varieties

Monstera sow asap

Papaver HP

Ranunculas HP
Rhodochiton A climber

Sagina HP
Schizanthus TA
Sisyrinchium HP
Statice A & P
Strawberry HP
Sweet Pea A

Trachelium P treat as A
Trollius HP

Viola odorata P

 What seeds to sow November

Antirrhinum P
Aralia GP
Asparagus GP

Catananche
Chrysanthemum P
Coleus GP
Cyclamen GP
Cyclamen HP

Delphinium P
Dicentra HP

Geranium TP
Green Manures

Kochia TA

Lisianthus A

Monstera sow asap

Rhodochiton A climber

Sagina HP
Schizanthus TA
Stock TA
Sweet Pea A

Trollius HP

Viola odorata P		 What seeds to sow December

Antirrhinum P
Aralia GP
Asparagus GP

Begonia TA
Begonia GP

Coleus GP
Corydalis HRP
Cyclamen GP

Delphinium P
Dianthus A

Fuchsia A

Gloxinia GP

Kochia TA

Laurentia A
Lisianthus A
Lobelia A

Monstera sow asap

Pansy P treat as A
Penstemon TP

Rhodochiton A climber

Schizanthus TA
Stock TA
Strawberry HP

Viola odorata P


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