Can marjoram survive winter outdoors in Canada?

No — marjoram (Origanum majorana) is tender, hardy only to Zone 9, and any Canadian winter outside the very mildest coastal BC gardens will kill an unprotected plant outdoors. Grow it as an annual, replanting from seed or a nursery plant each spring, unless you're willing to overwinter it as a container houseplant.

When should I plant marjoram in Canada?

Start seed indoors 8–10 weeks before your last frost date — marjoram seed is fine and slow to germinate, so an early indoor start matters. Transplant outdoors after your last frost once nights are reliably mild, similar timing to basil. Direct sowing works but gives a much later, smaller harvest in most of Canada's shorter seasons.

What's the difference between marjoram and oregano?

They're closely related — both in the Origanum genus — and often confused, but the practical Canadian distinction is hardiness: oregano (Origanum vulgare) is Zone 5 hardy and comes back as a perennial, while marjoram is tender and needs replanting every year. Flavour-wise, marjoram is milder and sweeter; oregano is more pungent, especially the Greek strain.

Can I overwinter marjoram indoors as a houseplant?

Yes, and it's a reasonable alternative to replanting from seed each year — pot it up before frost and bring it to a bright, cool indoor spot for winter, much like overwintering rosemary. It won't thrive as vigorously indoors as it does outdoors in summer, but a plant carried through winter gives you a head start the following spring instead of starting from seed again.

Why does my marjoram taste weaker than dried marjoram from the store?

Marjoram's flavour is generally milder than oregano's to begin with, so comparing it to a concentrated dried spice can be misleading — fresh marjoram is meant to taste more delicate. Full sun and drier, well-drained soil concentrate its aromatic oils somewhat more than rich, wet conditions, but expect a subtler flavour than oregano even at its best.

How do I harvest marjoram for the best flavour?

Harvest just before the plant flowers, when the aromatic oil content in the leaves peaks — once it blooms, flavour intensity drops noticeably. Regular light harvesting through the season also delays flowering and keeps the plant bushier and more productive.

CANADA GROWING GUIDE

Growing Marjoram in Canada — Not Hardy Like Its Cousin Oregano

Frequently mistaken for oregano, but marjoram is tender to Zone 9 and can't survive a Canadian winter outdoors. Sow dates for growing it as the annual it has to be here.

Marjoram sits next to oregano at nearly every garden centre, and the two are close enough relatives that it's an easy mix-up. In Canada, though, only one of them survives winter outdoors.

Marjoram is tender (Zone 9), so treat it as an annual here — start it early indoors, enjoy a season of milder, sweeter leaves than oregano, and replant next spring (or overwinter it indoors as a houseplant if you want to skip that step).

Growing marjoram in Canada: tender to Zone 9 — cannot survive a Canadian winter outdoors, must be grown as an annual (or overwintered indoors as a houseplant). Start seed indoors 8–10 weeks before last frost; transplant after last frost once nights are mild. Harvest before flowering for peak flavour.

When should you plant marjoram where you garden?

Get your city's frost dates, indoor seed-starting dates, and this week's planting jobs — three free tools.

📅 What to Plant Now ❄️ Frost Dates 🌱 Seed Starting

🌱 Need seeds? West Coast Seeds (a BC company) sells untreated, Canadian-grown herb seed.

🥦 Shop herb seeds at West Coast Seeds →

🌿 Wanted oregano instead? See Growing Oregano in Canada — the hardy Zone 5 perennial relative that survives outdoors year-round.

Marjoram vs. Oregano

	Marjoram (O. majorana)	Oregano (O. vulgare)
Hardiness in Canada	Zone 9+ — grow as an annual	Zone 5 — true perennial
Flavour	Milder, sweeter	Pungent, especially Greek oregano
Habit	More upright, bushy	Spreads by creeping stems

Getting the Best Flavour From Marjoram

Harvest before flowering

Aromatic oil content peaks just before bloom. Regular light harvesting through the season also delays flowering and keeps the plant productive longer.

Full sun, drier soil

Well-drained soil and full sun concentrate the aromatic oils somewhat compared to rich, wet conditions — though marjoram's flavour is inherently milder than oregano's regardless.

Consider overwintering indoors

Potting up an established plant before fall frost and bringing it to a bright, cool indoor spot skips restarting from seed every spring, similar to overwintering rosemary.