🌿 When to Plant Marjoram
Sweeter cousin of oregano; harvest before flowering for best flavor; annual in cold climates
📅 Planting Calendar by USDA Zone
Marjoram is a warm-season crop — plant it after your last spring frost, once the soil has warmed, and start seeds indoors a few weeks ahead for a head start. Find the exact start-indoors, transplant, and direct-sow dates for your USDA zone in the table below.
Select your zone to highlight your dates. All dates are calculated from each zone's average frost dates — see how we calculate them.
| Zone | Last Frost | Start Indoors | Transplant | Direct Sow |
|---|---|---|---|---|
| Zone 2A | May 30 | Apr 4 | May 30 | May 30 |
| Zone 3B | May 15 | Mar 20 | May 15 | May 15 |
| Zone 4A | May 8 | Mar 13 | May 8 | May 8 |
| Zone 4B | May 1 | Mar 6 | May 1 | May 1 |
| Zone 5A | Apr 25 | Feb 28 | Apr 25 | Apr 25 |
| Zone 5B | Apr 18 | Feb 21 | Apr 18 | Apr 18 |
| Zone 6A | Apr 21 | Feb 24 | Apr 21 | Apr 21 |
| Zone 6B | Apr 10 | Feb 13 | Apr 10 | Apr 10 |
| Zone 7A | Apr 5 | Feb 8 | Apr 5 | Apr 5 |
| Zone 7B | Mar 28 | Jan 31 | Mar 28 | Mar 28 |
| Zone 8A | Mar 20 | Jan 23 | Mar 20 | Mar 20 |
| Zone 8B | Mar 12 | Jan 15 | Mar 12 | Mar 12 |
| Zone 9A | Feb 28 | Jan 3 | Feb 28 | Feb 28 |
| Zone 9B | Feb 15 | Dec 21 | Feb 15 | Feb 15 |
| Zone 10A | Feb 1 | Dec 7 | Feb 1 | Feb 1 |
| Zone 10B | Jan 15 | Nov 20 | Jan 15 | Jan 15 |
| Zone 11A | Jan 1 | Nov 6 | Jan 1 | Jan 1 |
Sweet marjoram is oregano’s gentler, more floral cousin — warmer and sweeter, with less bite. Essential in Mediterranean cooking and dried herb blends.
Top Growing Tips
- Start indoors 6-8 weeks before last frost — slow from seed
- Pinch back flowers to keep plants producing tender leaves
- Harvest before flowers fully open for most concentrated flavor
- Bring indoors as a perennial houseplant in zones 6 and below
- Use fresh or dried — one of the best herbs for drying
Companion Planting
Good companions: vegetables generally, vegetables and beans
Avoid planting near: Fennel
Harvest Timeline
60-90 days; harvest leaves anytime; best flavor just before bloom
Growing marjoram in your region?
These dates come from your zone's frost windows. For the full month-by-month plan — succession sowing, variety picks, and timing tuned to your climate, not just your zone — our regional vegetable-gardening guides cover your area start to finish.
Find your regional growing guide