How to Grow Marjoram
Firstly if you haven’t heard about this crop before I want to quickly explain to you what marjoram actually is. Marjoram, also known as sweet marjoram, is an aromatic herb in the mint family that has been grown in the Mediterranean, North Africa, and Western Asia for thousands of years. While similar to oregano, it has a milder flavor and is often used to garnish salads, soups, and meat dishes. It’s particularly potent when dried but can also be used fresh. What’s more, marjoram has been shown to have several anti-inflammatory and antimicrobial properties. Getting your marjoram growing setup right from the start makes everything easier. I’ve found that investing in decent materials pays off, though you don’t need anything fancy or expensive.
Seeds or Plants
You can start marjoram from seed or buy young plants from garden centres. Seeds give you more varieties to choose from, particularly sweet marjoram (Origanum majorana) and pot marjoram (Origanum onites). If you’re after immediate results, small plug plants work brilliantly. I prefer starting from seed because it’s more economical, especially if you want multiple plants. A single packet typically contains hundreds of seeds and costs about the same as one established plant. For more on this, see our guide on from windowsill to garden: your complete chive growing guide.
Growing Medium and Containers
Marjoram absolutely demands good drainage. I use a mix of multipurpose compost with added horticultural grit or perlite, roughly three parts compost to one part grit. For containers, anything with drainage holes works, but terracotta pots are ideal because they’re porous and help prevent waterlogging. If you’re planting directly in the ground, the soil needs to be reasonably light. Heavy clay, which we have plenty of across the Midlands and parts of Yorkshire, requires amendment with plenty of organic matter and grit.
Additional Equipment
You’ll want seed trays or small pots for starting seeds, a watering can with a fine rose (the sprinkler head that creates gentle droplets), and plant labels. If you’re growing indoors initially, a sunny windowsill usually suffices, though a heated propagator speeds up germination during cooler months. I keep a pair of scissors or secateurs specifically for harvesting herbs, as clean cuts help prevent disease.
Step-by-Step Instructions
Starting from Seed Indoors
I start marjoram seeds indoors between March and early May. The seeds are tiny, almost dust-like, which makes handling them a bit fiddly. Fill seed trays or small pots with your compost mix, firm it gently, and water thoroughly before sowing. This prevents the seeds from being washed about. Scatter seeds thinly on the surface and cover with just a few millimetres of compost or vermiculite. Marjoram seeds need light to germinate, so don’t bury them deep. You might also find from seed to harvest: growing fennel in your garden helpful.
Join the BFFD Community
Connect with thousands of UK growers, access our complete directory of farm shops and farmers markets, and get expert growing advice from our community.
Place the trays somewhere warm, ideally between 18-21°C. A kitchen windowsill often provides perfect conditions. Germination typically takes 10-14 days, though I’ve had batches take three weeks when temperatures fluctuated. Keep the compost moist but not sodden. I use a spray bottle for watering at this stage because it’s gentler than pouring.
Pricking Out and Potting On
Once seedlings develop their first true leaves (the second set that appears, not the initial seed leaves), they need more space. I prick them out individually into small pots, handling them by their leaves rather than stems, which bruise easily. This stage usually happens about three to four weeks after sowing. Use the same compost mix and keep the young plants in a bright spot, gradually acclimatising them to outdoor conditions.
Hardening off is essential. I move pots outside during mild days, bringing them in at night, for about a week before planting out. This process toughens them up and prevents the shock that can stunt growth or kill tender plants when they meet proper British weather.
Planting Out
Wait until all risk of frost has passed, typically late May or early June depending on your location. Scottish growers and those in northern England might need to wait a bit longer. Choose the sunniest spot you have. Marjoram tolerates partial shade but produces far more flavourful foliage in full sun. I’ve grown it in spots that get only morning sun, and whilst it survived, the flavour was noticeably milder.
Space plants about 20-25cm apart. They’ll bush out nicely with room to breathe. If your soil is heavy, dig in plenty of grit and compost. I’ve found that raising the planting area slightly, creating a low mound, helps with drainage. Water plants in well after planting but then ease off. Overwatering is the most common mistake at this stage.
Container Growing
Growing marjoram in pots works brilliantly, and I’d actually recommend it for most gardeners. Use containers at least 20cm in diameter for single plants, or larger troughs for multiple plants. The mobility of pots means you can move them to follow the sun or bring them under cover during particularly wet spells. I keep several pots by my kitchen door, which makes harvesting whilst cooking incredibly convenient.
Container-grown marjoram needs more regular watering than ground-planted specimens, but the key is letting the top couple of centimetres dry out between waterings. Stick your finger in the compost to check. If it feels damp, wait. The Mediterranean origins of this herb mean it’s evolved to handle drought far better than constant moisture.
Ongoing Care and Maintenance
Marjoram is relatively low-maintenance once established. I water during prolonged dry spells but otherwise let rainfall do the work. Feeding isn’t particularly necessary if you’ve used decent compost, though a light application of general-purpose fertiliser in midsummer can boost growth. I prefer using liquid seaweed feed occasionally, which seems to improve overall plant health without pushing excessive leafy growth at the expense of flavour.
Pinch out growing tips regularly to encourage bushy growth. This also prevents the plant from flowering too early, which is important because once marjoram sets flower, the leaf production slows and the flavour changes. That said, the flowers are edible and attract beneficial insects, so I usually let a few stems bloom whilst keeping others trimmed for leaf production.
Harvesting
You can start harvesting once plants are about 10cm tall, typically eight to ten weeks after sowing. Take stems from the top, cutting just above a leaf node. This encourages branching and more growth. I harvest in the morning after any dew has dried but before the day gets too hot, when the essential oils are most concentrated. Regular harvesting actually improves the plant, keeping it compact and productive.
For fresh use, simply snip what you need. For drying, cut whole stems, tie them in small bunches, and hang them somewhere warm and airy. A spare room or airing cupboard works well. Once completely dry, strip the leaves and store them in airtight jars. I’ve found that marjoram dries particularly well compared to some herbs, retaining much of its flavour.
Common Mistakes to Avoid
Overwatering and Poor Drainage
This kills more marjoram plants than anything else. I’ve lost entire batches to root rot when I was too enthusiastic with the watering can. Marjoram evolved in rocky Mediterranean hillsides where water drains quickly. Our heavy British soils and frequent rain already challenge this preference. Adding extra water on top is asking for trouble. Yellow leaves that drop off and stems that turn black at the base indicate waterlogging. If you spot these signs early, you might save the plant by improving drainage and cutting back on water.
Planting Too Early
Marjoram is frost-tender, and a late spring frost will damage or kill young plants. I learned this the hard way during an April cold snap in Hampshire that blackened every marjoram plant I’d optimistically planted out. Now I wait, even when the weather looks promising. If you’re keen to get started early, keep plants in pots that you can move to shelter if frost threatens.
Insufficient Light
I’ve tried growing marjoram in shadier spots, thinking that our strong summer sun might be too much. The plants survived but produced leggy, pale growth with little flavour. Marjoram genuinely needs at least six hours of direct sunlight daily. If you only have shady spaces, consider a different herb like parsley or chives that tolerate lower light levels better.
Using the Wrong Soil
Rich, moisture-retentive soil might seem like it would produce lush growth, but marjoram actually performs better in leaner conditions. Overly fertile soil produces lots of soft, flavourless foliage prone to disease. I once added loads of well-rotted manure to a herb bed, thinking I was being helpful, and the marjoram became a floppy mess whilst the thyme and sage looked miserable. These Mediterranean herbs prefer it tough.
Expert Tips
Extending the Season
Marjoram is technically a tender perennial, meaning it can survive multiple years in mild climates but often succumbs to our British winters. I’ve successfully overwintered plants in pots by moving them into an unheated greenhouse or cold frame. They go dormant and look rather sad through winter, but usually bounce back in spring. In milder regions, particularly Cornwall, Devon, and coastal areas of Wales, marjoram sometimes survives outdoors with protection from fleece or cloches.
Another approach is taking cuttings in late summer. Trim 7-10cm lengths of non-flowering stem, remove the lower leaves, and pot them up in gritty compost. Keep them somewhere bright and cool over winter, and you’ll have vigorous young plants ready for spring. This method has worked brilliantly for me, providing insurance against winter losses.
Companion Planting
Marjoram grows beautifully alongside other Mediterranean herbs like thyme, sage, and oregano because they share similar requirements. I’ve created dedicated ‘dry garden’ sections that bring together these herbs with lavender and rosemary. They look attractive together and make maintenance straightforward since they all need the same care. Marjoram also reportedly benefits vegetables like tomatoes and peppers, though I’ve found the evidence for this rather anecdotal. What definitely works is planting marjoram near brassicas, where it seems to attract beneficial insects that prey on cabbage white butterfly caterpillars.
Variety Selection
Sweet marjoram (Origanum majorana) is the classic culinary variety with the finest flavour. It’s what I grow most often. Pot marjoram (Origanum onites) is slightly hardier and has a stronger, more oregano-like taste. For gardeners in colder areas or those wanting a reliable perennial, pot marjoram is worth trying. There are also golden and variegated forms that add ornamental interest whilst remaining perfectly edible.
Dealing with Pests and Diseases
Marjoram is remarkably trouble-free. I’ve grown it for years without significant pest problems. Aphids occasionally cluster on young growth early in the season, but a strong spray of water usually dislodges them. Proper spacing and good air circulation prevent most fungal issues. The main disease risk is root rot from poor drainage, which is entirely preventable. If leaves develop rust-coloured spots or powdery mildew, remove affected parts and improve air flow around plants.
Frequently Asked Questions
Can I grow marjoram indoors year-round?
Yes, marjoram grows well on sunny windowsills, particularly south-facing ones. I keep pots indoors over winter and they continue producing leaves, though growth slows during darker months. The main challenges are providing enough light and avoiding overwatering, which is easier to do indoors where plants dry out more slowly. Rotating pots regularly helps plants grow evenly rather than leaning towards the light. Indoor marjoram won’t be as vigorous as outdoor plants during summer, but it’s perfectly feasible and convenient for year-round harvesting.
What’s the difference between marjoram and oregano?
Whilst they’re closely related and often confused, marjoram has a sweeter, more delicate flavour compared to oregano’s robust, peppery taste. Botanically, sweet marjoram is Origanum majorana, whilst common oregano is Origanum vulgare. They look similar but marjoram tends to be more compact with softer leaves. In the garden, oregano is much hardier and survives British winters reliably, whereas marjoram often needs protection or treating as an annual. For cooking, marjoram suits delicate dishes whilst oregano stands up to stronger flavours and longer cooking times.
How do I prevent marjoram from becoming leggy?
Regular pinching out and harvesting are essential for keeping marjoram bushy rather than leggy. I pinch out the growing tips every few weeks, which forces the plant to produce side shoots rather than growing tall and sparse. Insufficient light also causes legginess, so ensure plants get at least six hours of direct sun daily. If your marjoram has already become leggy, cut it back by about half, which usually prompts fresh, compact growth. This works best during the growing season rather than autumn or winter when recovery is slower.
Is marjoram frost-hardy?
No, marjoram is frost-tender and will be damaged or killed by frost. This is why we typically treat it as an annual or provide winter protection. In very mild British areas, particularly coastal regions with minimal frost, established plants sometimes survive outdoors with mulching or fleece protection. I’ve had better success overwintering marjoram in pots moved into frost-free spaces like cold greenhouses or porches. The plant goes dormant but usually regrows in spring. For most gardeners, taking cuttings or starting fresh seeds each year is more reliable than attempting to overwinter outdoor plants.
When should I harvest marjoram for the best flavour?
Harvest marjoram in the morning after dew has dried but before midday heat, when essential oil content is highest. For fresh use, simply pick what you need throughout the growing season. For drying and storing, the best time is just before the plant flowers, when leaves are most aromatic. I usually do a major harvest in mid to late summer, cutting stems back by about two-thirds. This timing allows the plant to regrow before autumn whilst giving you a good supply for drying. Younger leaves generally have better flavour than older, tougher ones, so regular harvesting that promotes new growth is beneficial.
Can I grow marjoram from supermarket cuttings?
Growing from shop-bought plants is possible but not always successful. The herbs sold in supermarkets are typically grown quickly in warm conditions and can struggle to adapt to normal growing environments. I’ve had mixed results attempting this. If you want to try, separate the crowded stems, pot them individually in gritty compost, and keep them somewhere bright but not too hot. Water sparingly and don’t expect them all to survive. Starting from proper seeds or buying young plants from garden centres gives much more reliable results and costs about the same when you factor in the high failure rate of shop-bought herbs.
If you’re looking to take the next step, explore our full resource hub where we cover practical growing guides, seasonal advice and sustainable farming insights in greater depth.
You can also join the conversation inside our community forum, where growers, allotment holders and small-scale farmers share real experiences, challenges and solutions.
For those ready to plan ahead, our Growers Calendar provides structured monthly guidance on what to sow, plant and harvest, helping you stay aligned with the British growing seasons.
Whether you’re working with containers on a balcony or a dedicated herb garden, marjoram adapts well to different situations. Start small with a plant or two, observe how they respond in your specific conditions, and adjust accordingly. The techniques I’ve shared work across different British regions, though you’ll need to account for local climate variations. Coastal gardeners might overwinter plants outdoors, whilst those in colder areas will need to provide protection or treat marjoram as an annual. Pay attention to drainage above all else, harvest regularly to keep plants productive, and you’ll have fresh marjoram from early summer right through to autumn.
Author: Megan Walker
Megan focuses on seasonal food, kitchen garden growing, and how households can reconnect with where their food comes from. Her writing blends practical growing advice with ideas for cooking and eating in season. With a passion for fresh ingredients and sustainable living, Megan’s articles help readers make the most of local produce while supporting British farms.