What to Plant in September in Ontario
Here's what you can plant in Ontario during September. Since Ontario spans multiple USDA zones, planting dates vary by location. Find your zone below.
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Zone 4a
View full Zone 4a planting guide for September
Harvest
- Acorn Squash
- Ageratum
- Alliums
- Alpine Strawberries
- Amaranth
- Anise
- Astilbe
- Bachelor's Button
- Basil
- Bee Balm
- Begonias
- Belgian Endive
- Black Beans
- Black-eyed Susan
- Brussels Sprouts
- Butternut Squash
- Cabbage
- Calendula
- Cantaloupe
- Catnip
- Cauliflower
- Celeriac
- Celery
- Celosia
- Chamomile
- Chickpeas
- Chives
- Christmas Lima Beans
- Collard Greens
- Comfrey
- Coreopsis
- Corn
- Cosmos
- Crosne
- Cucumber
- Dahlias
- Daylily
- Delicata Squash
- Echinacea (Purple Coneflower)
- Edamame
- Fava Beans
- Fennel
- Fennel (herb)
- Gaillardia (Blanket Flower)
- Garlic Chives
- Geraniums
- Gladiolus
- Green Beans
- Ground Cherry
- Honeydew
- Horehound
- Horseradish
- Hostas
- Hubbard Squash
- Hydrangeas
- Hyssop
- Impatiens
- Kabocha
- Kidney Beans
- Leeks
- Lemon Balm
- Lentils
- Lilies
- Lima Beans
- Lovage
- Marigolds
- Melon
- Mint
- Nasturtium
- Onion
- Oregano
- Parsley
- Parsnip
- Peonies
- Peppers
- Petunia
- Phlox
- Pole Beans
- Portulaca
- Potatoes
- Pumpkin
- Romanesco
- Roses
- Rue
- Sage
- Salsify
- Salvia
- Savory
- Savoy Cabbage
- Scarlet Runner Beans
- Sedum (Stonecrop)
- Shallot
- Shiso
- Snap Peas
- Snapdragon
- Soybeans
- Spaghetti Squash
- Squash (Summer)
- Squash (Winter)
- Strawberries
- Sunchoke
- Sunflower
- Sweet Corn
- Sweet Pea
- Tarragon
- Thai Basil
- Thyme
- Tomatillo
- Tomatoes
- Valerian
- Vinca (Annual)
- Watermelon
- Wax Beans
- Yarrow
- Zinnia
- Zucchini
Zone 4b
View full Zone 4b planting guide for September
Harvest
- Acorn Squash
- Ageratum
- Alliums
- Alpine Strawberries
- Amaranth
- Anise
- Astilbe
- Bachelor's Button
- Basil
- Bee Balm
- Begonias
- Belgian Endive
- Black Beans
- Black-eyed Susan
- Brussels Sprouts
- Butternut Squash
- Calendula
- Cantaloupe
- Catnip
- Celeriac
- Celery
- Celosia
- Chamomile
- Chickpeas
- Chives
- Christmas Lima Beans
- Comfrey
- Coreopsis
- Corn
- Cosmos
- Crosne
- Cucumber
- Dahlias
- Daylily
- Delicata Squash
- Echinacea (Purple Coneflower)
- Edamame
- Fennel
- Fennel (herb)
- Gaillardia (Blanket Flower)
- Garlic Chives
- Geraniums
- Gladiolus
- Green Beans
- Ground Cherry
- Honeydew
- Horehound
- Horseradish
- Hostas
- Hubbard Squash
- Hydrangeas
- Hyssop
- Impatiens
- Kabocha
- Kidney Beans
- Leeks
- Lentils
- Lilies
- Lovage
- Marigolds
- Melon
- Mint
- Nasturtium
- Onion
- Oregano
- Parsnip
- Peppers
- Petunia
- Phlox
- Pole Beans
- Portulaca
- Potatoes
- Pumpkin
- Roses
- Rue
- Sage
- Salsify
- Salvia
- Savoy Cabbage
- Sedum (Stonecrop)
- Shallot
- Shiso
- Snap Peas
- Snapdragon
- Soybeans
- Spaghetti Squash
- Squash (Summer)
- Squash (Winter)
- Strawberries
- Sunchoke
- Sunflower
- Sweet Pea
- Tarragon
- Thai Basil
- Thyme
- Tomatillo
- Tomatoes
- Valerian
- Vinca (Annual)
- Watermelon
- Wax Beans
- Yarrow
- Zinnia
- Zucchini
Zone 5b
View full Zone 5b planting guide for September
Harvest
- Ageratum
- Alpine Strawberries
- Amaranth
- Anise
- Astilbe
- Bachelor's Button
- Bee Balm
- Begonias
- Belgian Endive
- Black Beans
- Black-eyed Susan
- Brussels Sprouts
- Butternut Squash
- Calabash
- Calendula
- Celeriac
- Celery
- Celosia
- Chives
- Comfrey
- Coreopsis
- Cosmos
- Crosne
- Cumin
- Dahlias
- Daylily
- Echinacea (Purple Coneflower)
- Eggplant
- Feverfew
- Gaillardia (Blanket Flower)
- Garlic Chives
- Geraniums
- Gladiolus
- Ground Cherry
- Honeydew
- Horehound
- Horseradish
- Hostas
- Hot Peppers
- Hubbard Squash
- Hyacinths
- Hydrangeas
- Hyssop
- Impatiens
- Lavender
- Leeks
- Lemon Thyme
- Lilies
- Lovage
- Marigolds
- Mint
- Nasturtium
- Onion
- Oregano
- Peppers
- Petunia
- Phlox
- Portulaca
- Potatoes
- Pumpkin
- Roses
- Rue
- Sage
- Salvia
- Sedum (Stonecrop)
- Shallot
- Snapdragon
- Soybeans
- Squash (Winter)
- Strawberries
- Sunchoke
- Sunflower
- Sweet Pea
- Sweet Potatoes
- Tarragon
- Thyme
- Tomatillo
- Tomatoes
- Valerian
- Vinca (Annual)
- Winter Melon
- Yarrow
- Zinnia
Zone 6a
View full Zone 6a planting guide for September
Harvest
- Ageratum
- Alpine Strawberries
- Amaranth
- Anise
- Astilbe
- Bee Balm
- Begonias
- Belgian Endive
- Black Beans
- Black-eyed Susan
- Brussels Sprouts
- Calabash
- Celosia
- Coreopsis
- Cosmos
- Crosne
- Cumin
- Dahlias
- Daylily
- Echinacea (Purple Coneflower)
- Eggplant
- Feverfew
- Gaillardia (Blanket Flower)
- Geraniums
- Gladiolus
- Ground Cherry
- Honeydew
- Horseradish
- Hostas
- Hot Peppers
- Hubbard Squash
- Hyacinths
- Hydrangeas
- Impatiens
- Leeks
- Lilies
- Loofah
- Luffa
- Marigolds
- Nasturtium
- Peppers
- Petunia
- Phlox
- Portulaca
- Potatoes
- Pumpkin
- Roses
- Salvia
- Sedum (Stonecrop)
- Soybeans
- Squash (Winter)
- Strawberries
- Sunchoke
- Sunflower
- Sweet Pea
- Sweet Potatoes
- Tomatillo
- Tomatoes
- Tulips
- Valerian
- Vinca (Annual)
- Winter Melon
- Yarrow
- Zinnia
Zone 6b
View full Zone 6b planting guide for September
Harvest
- Ageratum
- Alpine Strawberries
- Amaranth
- Anise
- Bee Balm
- Begonias
- Belgian Endive
- Black-eyed Susan
- Calabash
- Celosia
- Coreopsis
- Cosmos
- Crosne
- Cumin
- Dahlias
- Daylily
- Echinacea (Purple Coneflower)
- Feverfew
- Gaillardia (Blanket Flower)
- Geraniums
- Gladiolus
- Horseradish
- Hostas
- Hot Peppers
- Hubbard Squash
- Hyacinths
- Hydrangeas
- Impatiens
- Leeks
- Lilies
- Loofah
- Luffa
- Marigolds
- Nasturtium
- Petunia
- Phlox
- Portulaca
- Potatoes
- Pumpkin
- Roses
- Salvia
- Sedum (Stonecrop)
- Squash (Winter)
- Strawberries
- Sunchoke
- Sunflower
- Sweet Potatoes
- Tulips
- Valerian
- Vinca (Annual)
- Winter Melon
- Yarrow
- Zinnia
Zone 7a
View full Zone 7a planting guide for September
Harvest
- Ageratum
- Alpine Strawberries
- Anemones
- Anise
- Artichoke
- Bee Balm
- Begonias
- Belgian Endive
- Black-eyed Susan
- Cardoon
- Celosia
- Chayote
- Coreopsis
- Cosmos
- Crocus
- Crosne
- Cumin
- Daffodils
- Dahlias
- Daylily
- Echinacea (Purple Coneflower)
- Feverfew
- Gaillardia (Blanket Flower)
- Geraniums
- Gladiolus
- Horseradish
- Hostas
- Hot Peppers
- Hyacinths
- Hydrangeas
- Impatiens
- Jicama
- Leeks
- Lilies
- Loofah
- Luffa
- Nasturtium
- Petunia
- Phlox
- Portulaca
- Rosemary
- Roses
- Salvia
- Sedum (Stonecrop)
- Strawberries
- Sunchoke
- Sunflower
- Tulips
- Valerian
- Vinca (Annual)
- Yarrow
- Zinnia
Zone 7b
View full Zone 7b planting guide for September
Harvest
- Ageratum
- Alpine Strawberries
- Anemones
- Artichoke
- Bee Balm
- Begonias
- Belgian Endive
- Black-eyed Susan
- Calendula
- Cardoon
- Celosia
- Chayote
- Coreopsis
- Cosmos
- Crocus
- Crosne
- Daffodils
- Dahlias
- Daylily
- Echinacea (Purple Coneflower)
- Feverfew
- Gaillardia (Blanket Flower)
- Geraniums
- Gladiolus
- Horseradish
- Hostas
- Hot Peppers
- Hyacinths
- Hydrangeas
- Impatiens
- Jicama
- Leeks
- Lilies
- Loofah
- Luffa
- Marigolds
- Nasturtium
- Petunia
- Portulaca
- Rosemary
- Roses
- Salvia
- Sedum (Stonecrop)
- Strawberries
- Sunchoke
- Sunflower
- Tulips
- Valerian
- Vinca (Annual)
- Yarrow
- Zinnia
Zone 8a
View full Zone 8a planting guide for September
Harvest
- Ageratum
- Alpine Strawberries
- Artichoke
- Begonias
- Black-eyed Susan
- Cardoon
- Celosia
- Chayote
- Coreopsis
- Cosmos
- Crocus
- Crosne
- Daffodils
- Dahlias
- Daylily
- Echinacea (Purple Coneflower)
- Gaillardia (Blanket Flower)
- Geraniums
- Gladiolus
- Horseradish
- Hostas
- Hot Peppers
- Hydrangeas
- Impatiens
- Jicama
- Lemongrass
- Lilies
- Loofah
- Luffa
- Nasturtium
- Petunia
- Portulaca
- Rosemary
- Roses
- Salvia
- Sedum (Stonecrop)
- Strawberries
- Sunchoke
- Sunflower
- Valerian
- Vinca (Annual)
- Yarrow
- Zinnia
Share this guide:
Share this guide: