Vegetable seedlings in different pots and containers

Planting Calendar for Garden Vegetables and Herbs

Every bountiful vegetable garden begins with seedlings. Time your indoor and outdoor sowing for strong plants and a healthy harvest, with the help of our herb and vegetable planting calendars.

Before You Begin

First, make sure you have your garden planned out. The ideal location is: 

  • In a sunny area
  • Clear but sheltered from the prevailing wind
  • A good distance from trees and shrubs
  • Close to a water source 

When choosing herbs and vegetables, consider your garden size as well as your family’s taste and needs. Keep in mind that you will have to space out the plants.

Indoor Sowing Calendar
Starting vegetable seedlings indoors extends their growing season and gives them a safe place to take root. All they need to thrive is a warm, sunny spot and regular watering. Ideal dates can vary from one region to another, and it is important not to sow too early or too late.
Vegetable
Indoor sowing
Depth
Transplantation
Spacing in garden
Broccoli
Early April
6 mm
Early June
Seeds: 45 cm
Rows: 60 cm
Brussels sprout
Mid-April
6 mm
Mid to Late May
Seeds: 60 cm
Rows: 60 cm
Cabbage
Mid-April
5 mm
May
Seeds: 45 cm
Rows: 45 cm
Cauliflower
Mid-April
6 mm
Late May
Seeds: 45 cm
Rows: 60 cm
Celeriac
Mid-March
5 mm
Mid to Late May
Seeds: 25 cm
Rows: 50 cm
Celery
Early March
3 mm
Late May
Seeds: 20 cm
Rows: 40 cm
Eggplant
Late March
3 mm
Mid-May
Seeds: 45 cm
Rows: 60 cm
Ground Cherries
Early April
6 mm
Early June
Seeds: 60 cm
Rows: 120 cm
Kale
Mid-March
1 cm
Early May
Seeds: 45 cm
Rows: 60 cm
Kohlrabi (German turnip)
Early April
6 cm
Mid-June
Seeds: 15 cm
Rows: 30 cm
Leek
Early March
1 cm
Early May
Seeds: 10 cm
Rows: 30 cm
Lettuce
Mid-April
6 mm
Late May
Seeds: 70 cm
Rows: 120 cm
Pepper
Late March
3 mm
Early June
Seeds: 30 cm
Rows: 50 cm
Pumpkin and squash
Early May
2.5 cm
Early June
Seeds: 90 cm
Rows: 120 cm
Swiss Chard
Early April
1 cm
Mid-May
Seeds: 20 cm
Rows: 45 cm
Tomatillo
Late April
5 mm
Early June
Seeds: 90 cm
Rows: 140 cm
Tomato
Late March
6 mm
Early June
Seeds: 45 cm
Rows: 80 cm
Zucchini
Early May
2-3 cm
Early June
Seeds: 20 cm
Rows: 30 cm
Vegetable
Indoor sowing
Depth
Transplantation
Spacing in garden
Broccoli
Early April
6 mm
Early June
Seeds: 45 cm
Rows: 60 cm
Brussels sprout
Mid-April
6 mm
Mid to Late May
Seeds: 60 cm
Rows: 60 cm
Cabbage
Mid-April
5 mm
May
Seeds: 45 cm
Rows: 45 cm
Cauliflower
Mid-April
6 mm
Late May
Seeds: 45 cm
Rows: 60 cm
Celeriac
Mid-March
5 mm
Mid to Late May
Seeds: 25 cm
Rows: 50 cm
Celery
Early March
3 mm
Late May
Seeds: 20 cm
Rows: 40 cm
Eggplant
Late March
3 mm
Mid-May
Seeds: 45 cm
Rows: 60 cm
Ground Cherries
Early April
6 mm
Early June
Seeds: 60 cm
Rows: 120 cm
Kale
Mid-March
1 cm
Early May
Seeds: 45 cm
Rows: 60 cm
Kohlrabi (German turnip)
Early April
6 cm
Mid-June
Seeds: 15 cm
Rows: 30 cm
Leek
Early March
1 cm
Early May
Seeds: 10 cm
Rows: 30 cm
Lettuce
Mid-April
6 mm
Late May
Seeds: 70 cm
Rows: 120 cm
Pepper
Late March
3 mm
Early June
Seeds: 30 cm
Rows: 50 cm
Pumpkin and squash
Early May
2.5 cm
Early June
Seeds: 90 cm
Rows: 120 cm
Swiss Chard
Early April
1 cm
Mid-May
Seeds: 20 cm
Rows: 45 cm
Tomatillo
Late April
5 mm
Early June
Seeds: 90 cm
Rows: 140 cm
Tomato
Late March
6 mm
Early June
Seeds: 45 cm
Rows: 80 cm
Zucchini
Early May
2-3 cm
Early June
Seeds: 20 cm
Rows: 30 cm
Kitchen island with a grow light and vegetable seedlings underneath
Install Grow Lights

Seeds need moisture to germinate, but they don’t usually require light. However, once the seedlings sprout, they need several hours of sunlight every day. If you can’t find a good sunny spot in your home, then consider grow lights to help your seedlings grow healthy and strong. 

Grow lights use very little energy but provide quality light output. They also don’t create a lot of heat, which prevents damage to fragile seedlings. Plus, most grow lights let you adapt the light spectrum to the growth stage of the plant, from seedling through to vegetation and flowering. 

For an easy grow light, simply change out the regular light bulb in a light fixture or lamp with a grow light bulb!

SHOP GROW LIGHTS
Outdoor Sowing Calendar
Hardy vegetables—such as root vegetables (like carrots), cabbage, and garlic—are more resistant to cold and can be planted directly into the soil outside.
Vegetable
Outdoor sowing
Depth
Spacing in garden
Beet
Mid-May
2.5 cm
Seeds: 10 cm
Rows: 35 cm
Carrot
Mid-May
1 cm
Seeds: 3 cm
Rows: 15 cm
Corn
Mid-May
5 cm
Seeds: 15 cm
Rows: 30 cm
Cucumber
Late May
20 cm
Seeds: 1 m
Rows: 1 m
Garlic
Mid-October
3 cm
Cloves: 15 cm
Rows: 25 cm
Kale
May
1 cm
Seeds: 45 cm
Rows: 60 cm
Kohlrabi (German turnip)
Early May
5 mm
Seeds: 15 cm
Rows: 30 cm
Lettuce
Early May
1 cm
Seeds: 20 cm
Rows: 30 cm
Onion
Early June
Three times the height of the bulb
Bulbs: 10 cm
Rows: 20 cm
Parsnip
Mid-May
1 cm
Seeds: 15 cm
Rows: 30 cm
Peas
Mid-May
2 cm
Seeds: 3 cm
Rows: 30 cm
Potato
Early May
15 cm
Seeds: 30 cm
Rows: 50 cm
Pumpkin and squash
Early June
2-3 cm
Seeds: 90 cm
Rows: 120 cm
Radish
Early May
2 cm
Seeds: 3 cm
Rows: 20 cm
Shallot
Early May
2 cm
Seeds: 15 cm
Rows: 20 cm
Spinach
Mid-May
3 cm
Seeds: 10 cm
Rows: 25 cm
Swiss Chard
Early May
1 cm
Seeds: 20 cm
Rows: 45 cm
Turnip
Early May
5 mm
Seeds: 5 cm
Rows: 20 cm
Zucchini
Early June
2-3 cm
Seeds: 70 cm
Rows: 120 cm
Vegetable
Outdoor sowing
Depth
Spacing in garden
Beet
Mid-May
2.5 cm
Seeds: 10 cm
Rows: 35 cm
Carrot
Mid-May
1 cm
Seeds: 3 cm
Rows: 15 cm
Corn
Mid-May
5 cm
Seeds: 15 cm
Rows: 30 cm
Cucumber
Late May
20 cm
Seeds: 1 m
Rows: 1 m
Garlic
Mid-October
3 cm
Cloves: 15 cm
Rows: 25 cm
Kale
May
1 cm
Seeds: 45 cm
Rows: 60 cm
Kohlrabi (German turnip)
Early May
5 mm
Seeds: 15 cm
Rows: 30 cm
Lettuce
Early May
1 cm
Seeds: 20 cm
Rows: 30 cm
Onion
Early June
Three times the height of the bulb
Bulbs: 10 cm
Rows: 20 cm
Parsnip
Mid-May
1 cm
Seeds: 15 cm
Rows: 30 cm
Peas
Mid-May
2 cm
Seeds: 3 cm
Rows: 30 cm
Potato
Early May
15 cm
Seeds: 30 cm
Rows: 50 cm
Pumpkin and squash
Early June
2-3 cm
Seeds: 90 cm
Rows: 120 cm
Radish
Early May
2 cm
Seeds: 3 cm
Rows: 20 cm
Shallot
Early May
2 cm
Seeds: 15 cm
Rows: 20 cm
Spinach
Mid-May
3 cm
Seeds: 10 cm
Rows: 25 cm
Swiss Chard
Early May
1 cm
Seeds: 20 cm
Rows: 45 cm
Turnip
Early May
5 mm
Seeds: 5 cm
Rows: 20 cm
Zucchini
Early June
2-3 cm
Seeds: 70 cm
Rows: 120 cm
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Pro Tip

There are some plants that you can sow more than once, allowing you to enjoy fresh vegetables the whole summer. Not only can you do multiple sows of fast-growing veggies like mesclun and radishes, but also of herbs that go to seed quickly, like cilantro.
Outdoor Sowing Calendar
Hardy vegetables—such as root vegetables (like carrots), cabbage, and garlic—are more resistant to cold and can be planted directly into the soil outside.
Fresh herb
Indoor sowing
Outdoor sowing
Transplantation
Dill
Mid-May
Basil
Mid-April
Early June
Chives (perennial)
March
Early June
Coriander
Early May
Marjoram
Mid-March
Early June
Mint (perennial)
Early May (potted)
Oregano (perennial)
Mid-March
Early June
Parsley
Early March
Early May
Sage (perennial)
Early April
Early June
Thyme (perennial)
Mid-March
Early June
Fresh herb
Indoor sowing
Outdoor sowing
Transplantation
Dill
Mid-May
Basil
Mid-April
Early June
Chives (perennial)
March
Early June
Coriander
Early May
Marjoram
Mid-March
Early June
Mint (perennial)
Early May (potted)
Oregano (perennial)
Mid-March
Early June
Parsley
Early March
Early May
Sage (perennial)
Early April
Early June
Thyme (perennial)
Mid-March
Early June
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Pro Tip

Some gardeners like to keep their flower and fruit seeds, you just need to make sure your seeds have a cold period before germination. Known as “cold stratification,” this process mimics seasonal temperature changes. Take the time to read up on it before you get started!

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