March · Early spring
What to sow in March in Oslo
12 crops are in their window this month in Oslo — timed to your local frost dates.
Last frost≈ 8 May
First frost≈ 6 Oct
Frost-free daysFrom 8 May
March averages-2°–6°C
Vegetables
5 in season
Broad Beans
Direct sow · pinch growing tips once pods set to deter aphids
Ginger
Start indoors · start indoors in late winter; it needs a long season
Horseradish
Plant root cuttings · dig roots after fall frost for the best flavor
Luffa
Start indoors · give it a sturdy trellis; vines get heavy fast
Spinach
Direct sow · sow early; heat makes it bolt and turn bitter
Herbs
7 in season
Basil
Start indoors · loves heat, don't rush it outside before frost
Chives
Start indoors · perennial clumps, snip leaves for repeat harvests
Lemongrass
Start indoors · pot it up in fall and bring indoors before frost
Oregano
Start indoors · slow from seed, keep soil warm to germinate
Parsley
Start indoors · slow to sprout, soak seeds overnight first
Fruit · nothing to sow this month