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Seedlings – Planting Guide

Working outside in the garden with the sun on your back, what could be better! Get a head start on summer and grow your own seedlings according to the planting guides below. Vegetables, herbs, perennial flowers and annuals: we have it all!

Most Read! Our magazine "Seeds are key"

and our latest magazine "The excitement of new seeds"

When to start indoor seedlings

February is a good time to start planning your sowing and get essential material. But before you put the seeds in the soil, make sure the timing is right for when you will be able to transplant to the garden.

  • Determine when the last frost should be in your area
  • Check the seed packet to know when you can sow
  • Choose the right seeds for your hardiness zone

Vegetable seedlings: what you need to know

If a big vegetable harvest is what you have in mind, check out the optimum growing conditions for vegetable seedlings according to each variety. Use the garden planner below.

Name Date Depth Container Germination Transplanting Spacing in the vegetable garden Maturity
Asparagus Early February 2,5 cm Tray 14-21 d Mid-May 60 cm Spring
Eggplant Mid-March 3 mm Tray 8-17 d Mid-May 40 cm 60-80 d
Beet Mid-May 1 cm Soil 15 cm 50-95 d
Broccoli Early April 6 mm Tray 10-12 d Early June 60 cm 60-80 d
Celery Early March 3 mm Tray 21-25 d End of May 20-30 cm 90-110 d
Cauliflower Early April 6 mm Tray 10-12 d Mid-May 50-60 cm 70-90 d
Pumpkin and squash Early May 2,5 cm Peat Cup 8-10 d Early June 1,25 m - 2,5 m 90-120 d
Cucumber Mid-April 2,5 cm Peat Cup 8-10 d Early June 25 cm 50-70 d
Spinach Mid-May 3 cm Soil 10 cm 60-80 d
Lettuce Mid-April 6 mm Tray 8-10 d Mid-May 20-25 cm 45-90 d
Onion Early March 1 cm Tray 12-14 d Mid-May 15 cm 50-120 d
Pepper Early March 1 cm Tray 6-8 d June 30-45 cm 70-80 d
Leek Early March 1 cm Tray 10-14 d Mid-May 15 cm 110-120 d
Tomato Mid-March to Mid-April 6 mm CTray or pots 5-8 d Early June 45-60 cm 50-80 d

Source : W.H. Perron

Produce your own herb seedlings

Because they enhance all cooking, herbs are practically indispensable. If you start your herbs from seed, you will be able to rely on a plentiful and flavourful crop. Here is an outline of the optimum growing conditions for most herbs.

Name Date Outside/Inside Germination
Dill Mid-May Outside 5-7 d
Basil Mid- April Inside 12-18 d
Chives Mid- April Inside 7-10 d
Cilantro Mid-May Outside 5-10 d
Marjoram Mid- April Inside 8-10 d
Oregano Mid- April Inside 3-10 d
Parsley Early April Inside 12-21 d
Summer Savory Mid-March Inside 2-10 d
Sage Mid-March Inside 5-12 d
Thyme Mid-March Inside 2-20 d

Growing flowers from seed

If you love your flowers, seedlings are a great way to expand the number of flower varieties you can grow and enjoy throughout the summer. Here are some pertinent details concerning the most common varieties.

Name Annual/Perennial Date Depth Germination Transplantation Spacing
Alyssum Annual Mid-April On the surface 7-12 d Late May 20-30 cm
Begonia Annual Early February On the surface 15-20 d Early June 15 cm
Coleus Perennial Early April On the surface 10-15 d Early June 20-30 cm
Dahlia Annual Early April 3 mm 5-10 d Late May 30-50 cm
Gaillardia Perennial Early April On the surface 15-20 d Late May 30 cm
Geranium Annual Early February 6 mm 5-15 d Late May 20-25 cm
Impatiens Annual Mid-February On the surface 10-18 d Early June 20-30 cm
Lavender Perennial January On the surface 4 to 6 wks Late May 50 cm
Bee Balm Perennial Mid-February On the surface 15-20 d Late May 30 cm
Pansy Annual Mid-February 6 mm 7-14 d Early May 15-20 cm
Petunia Annual Early February On the surface 10-12 d Late May 25-30 cm
Black-eyed Susan Perennial Late April 6 mm 5-10 d Late May 25-30 cm
Sage Perennial Early April On the surface 10-12 d Late May 25 cm
Sunflower Annual Mid-May, outside 3 cm 6-10 d Late May Small: 15 cm
Large: 20-25 cm
Giant: 30 cm