April · Mid-spring

What to sow in April in Calgary

24 crops are in their window this month in Calgary — timed to your local frost dates.

Last frost≈ 22 May
First frost≈ 13 Sep
Frost-free daysFrom 22 May
April averages-2°–11°C

Vegetables

17 in season
Broad Beans
Direct sow · pinch growing tips once pods set to deter aphids
All month
Choy Sum
Direct sow · cut flowering stems young for the most tender bite
Opens 24 Apr
Daikon Radish
Direct sow · cold weather sweetens the roots after a light frost
Opens 17 Apr
Gai Lan (Chinese Broccoli)
Direct sow · harvest stems before the flower buds fully open
Opens 10 Apr
Ginger
Start indoors · start indoors in late winter; it needs a long season
Closes 10 Apr

Herbs

7 in season
Basil
Start indoors · loves heat, don't rush it outside before frost
Opens 10 Apr
Chives
Start indoors · perennial clumps, snip leaves for repeat harvests
All month
Oregano
Start indoors · slow from seed, keep soil warm to germinate
All month
Parsley
Start indoors · slow to sprout, soak seeds overnight first
All month
Sage
Start indoors · slow grower, start early and harden off well
All month

Fruit · nothing to sow this month