💜 Lavender Grow Guide

🌱 Overview

Lavender is a beautifully fragrant perennial herb grown for its aromatic foliage, purple flower spikes, pollinator appeal, and excellent use in borders, pots, cottage gardens, herb gardens, dry garden beds, and cut flower plantings. It is valued for its calming scent, silvery foliage, long-lasting flowers, and ability to bring structure and softness to sunny garden spaces.

Lavender is not a plant that enjoys rich, wet, heavily fed conditions. Its success depends on sun, sharp drainage, airflow, and restrained watering. Once established, it is fairly tough and drought tolerant, but young plants need careful watering while they settle in. The most common cause of failure is soil that stays too damp around the roots.

🌱 Sowing in Trays Versus Direct Sowing

Lavender can be grown from seed either in trays or by direct sowing, but sowing in trays is the best method. Lavender seed can be slow and uneven to germinate, and seedlings are very small at first. Starting them in trays gives better control over moisture, drainage, light, and protection from pests.

To sow in trays, use a fine, free-draining seed raising mix. Scatter the seed thinly across the surface and cover it very lightly with fine mix or vermiculite. Lavender seed should not be buried deeply. Water gently with a mist or fine spray, then keep the mix lightly moist but never soggy. Good airflow is important, as overly wet trays can cause seedlings to collapse.

Once seedlings are large enough to handle and have developed several true leaves, move them into small individual pots. Grow them on until they are sturdy before planting into their final position. Harden them off gradually before planting outside, especially if they have been raised in a sheltered position.

Direct sowing is possible, but it is usually less reliable. Fine seed can be washed away, dry out, or become overwhelmed by weeds. Young seedlings are also vulnerable to slugs, snails, and heavy rain. Direct sowing is only worth trying in a very well-prepared, free-draining, weed-free bed.

For most gardeners, tray sowing is clearly the better option because lavender seedlings benefit from careful early management.

🌾 Seed Pre-Treatment

Lavender seed often benefits from cold moist treatment before sowing. This can improve germination and make sprouting more even, especially with older seed or seed that has been slow in the past.

To do this, place the seed in a small labelled bag or container with slightly damp seed raising mix, sand, or vermiculite. Keep it in the fridge for several weeks, then sow shallowly into trays. The mix should be barely moist, not wet. Excess moisture can rot the seed.

A simpler method is to place the seed packet in the fridge before sowing, though moist chilling is usually more effective. No smoke treatment is required. Soaking is not usually necessary and can make the tiny seed harder to handle.

Fresh seed may germinate without pre-treatment, but cold moist treatment is recommended for better reliability.

🌞 Soil and Position

Lavender grows best in a full sun position with open airflow. Strong sunlight encourages compact growth, aromatic foliage, sturdy stems, and better flowering. In shade, plants often become stretched, woody, weak, and less fragrant.

The soil should be free-draining, slightly lean, and not overly rich. Lavender dislikes heavy clay, soggy beds, and constantly damp roots. If the soil holds water, improve drainage before planting or grow lavender in raised beds, mounds, rockeries, or containers.

Avoid fresh manure and heavy compost applications around lavender. A small amount of well-aged compost can be used to improve poor soil structure, but the goal is not lush fertility. Gravelly, sandy, or lightly improved soil is often better than rich vegetable garden soil.

In containers, use a free-draining potting mix. Adding coarse sand, fine gravel, or perlite can help improve drainage. Choose a pot with generous drainage holes and never allow the pot to sit in a saucer of water for long periods.

💧 Care and Maintenance

Water young lavender plants regularly while they establish, but allow the soil surface to dry slightly between watering. Once established, lavender prefers less frequent, deeper watering rather than constant moisture. Overwatering is one of the main reasons lavender fails.

Mulch carefully. Avoid thick, damp organic mulch packed around the stem, as this can trap moisture and encourage rot. Gravel, small stones, or a light open mulch are better choices. Keep mulch away from the crown of the plant.

Lavender needs very little feeding. Too much fertiliser, especially high-nitrogen fertiliser, encourages soft leafy growth and reduces fragrance, flowering, and resilience. In most garden soils, feeding is unnecessary. In pots, a very light feed during active growth may be used only if the plant looks weak or pale.

Pruning is important for keeping lavender compact and productive. After flowering, trim back the spent flower stems and lightly shape the leafy growth. Do not cut hard into old bare wood, as lavender may not regrow well from woody stems. Regular light trimming is much better than occasional severe pruning.

Good airflow helps prevent fungal problems. Avoid crowding lavender between dense, thirsty plants. Give each plant enough room for air to move around the foliage and stems.

🌼 Companion Planting Guide

Lavender is an excellent companion for sunny, dry, well-drained gardens. Its flowers attract bees, butterflies, hoverflies, and other beneficial insects, making it useful near vegetable beds, orchards, and pollinator borders.

Good companions include rosemary, thyme, sage, oregano, marjoram, yarrow, salvia, catmint, dianthus, gaillardia, echinacea, marigold, and roses.

Rosemary, thyme, sage, oregano, and marjoram enjoy similar sunny, free-draining conditions and pair well in herb gardens. Yarrow, salvia, catmint, gaillardia, and echinacea create a drought-tolerant pollinator planting with complementary colours and textures. Dianthus suits similar drainage and adds fragrance at a lower level. Roses can grow well nearby, especially where lavender is used as a fragrant border plant and pollinator attractor.

Avoid planting lavender beside moisture-loving herbs and vegetables that need rich, damp soil, such as mint, parsley, coriander, lettuce, and leafy greens. These plants usually require more water and fertility than lavender prefers. Also avoid placing lavender where large leafy plants will shade it or trap humidity around its base.

✂️ How to Harvest

Lavender flowers are best harvested when the flower spikes are coloured and some of the small buds have begun to open. For dried bunches, cut stems before all flowers are fully open, as this helps preserve colour and fragrance.

Use clean, sharp snips and harvest in the cooler part of the day after dew has dried. Cut long stems above a healthy set of leaves, taking care not to cut into old bare wood.

For fresh use, place stems into water soon after cutting. For drying, tie small bunches with string or rubber bands and hang them upside down in a dry, shaded, airy place. Darkness helps preserve colour, while airflow prevents mould.

Once fully dry, the flower buds can be stripped from the stems and stored in an airtight container away from heat, light, and moisture. Dried lavender can be used in sachets, dried arrangements, bath blends, craft projects, potpourri, and carefully in culinary recipes if the plants were grown without unsafe sprays and are suitable for edible use.

⚠️ Common Issues and Fixes

Issue	Likely Cause	Fix
Poor germination	Seed dormancy, old seed, seed buried too deeply, mix too wet or dry	Use fresh seed, try cold moist treatment, sow shallowly, keep lightly moist
Seedlings collapse	Overwatering, poor airflow, damping off	Use clean free-draining mix, water lightly, improve ventilation
Slow seedling growth	Low light, cool conditions, heavy mix	Provide bright light, use free-draining mix, be patient
Yellowing leaves	Overwatering, poor drainage, rich wet soil	Reduce watering, improve drainage, move to a drier position
Plant wilts despite watering	Root rot from soil staying wet	Check roots, improve drainage, avoid frequent watering
Few flowers	Too much shade, excess nitrogen, lack of pruning	Move to full sun, reduce feeding, prune lightly after flowering
Plant becomes woody	Age, lack of regular trimming, cutting too late or too hard	Prune lightly after flowering each year and avoid cutting into bare wood
Grey mould	Damp crowded growth, poor airflow, wet foliage	Space plants well, remove affected growth, water at soil level
Brown lower stems	Moisture trapped around crown or mulch too close	Pull mulch away from stems and improve airflow
Leaves look soft and lush but plant flowers poorly	Soil too rich or overfed	Stop feeding and grow in leaner, freer-draining soil
Aphids on new growth	Soft fresh tips attracting sap-sucking insects	Spray off with water and encourage beneficial insects
Spittlebug foam on stems	Sap-feeding nymphs hiding in frothy patches	Rinse off with water or remove by hand if numbers are high

🌰 Detailed Seed Saving Guide

Saving lavender seed is possible, although seedlings may vary in flower colour, fragrance, size, and growth habit. For the best results, choose healthy plants with strong scent, good flower colour, compact growth, and no major disease issues.

Allow selected flower spikes to remain on the plant after flowering. The flowers will fade and dry, and small seeds will mature inside the dried flower heads. Wait until the stems and flower heads are dry and papery before collecting. If they are picked too early, the seed may not be fully mature.

Cut the dry flower stems on a dry day and place them upside down in a paper bag. Keep the bag in a dry, shaded, airy place for several more days. As the flower heads dry further, some seed may naturally fall into the bag.

To extract the seed, rub the dried flower heads gently over a clean tray or sheet of paper. Lavender seed is small, dark, and easy to lose, so work slowly. Separate the seed from the dry flower material by hand, with a fine sieve, or by gently blowing away the lighter chaff.

Spread the cleaned seed on paper for several more days to ensure it is fully dry. Once dry, place it in a labelled paper envelope or airtight container. Include the plant name, flower colour, scent notes, and collection date.

Store seed in a cool, dark, dry place. Moisture and heat reduce seed life, so avoid humid cupboards, sunny windowsills, and hot sheds. For better germination, use seed while it is fresh.

If different lavender types are grown close together, seedlings may show variation. This can be enjoyable if you like natural differences, but if you want identical plants, cuttings are more reliable than seed.

🌻 Final Thoughts

Lavender is a classic garden plant with fragrance, beauty, pollinator value, and excellent use in fresh and dried arrangements. It is best started in trays because the seed can be slow and uneven, and young seedlings need careful moisture control.

The keys to success are full sun, excellent drainage, light feeding, good airflow, and careful pruning. Treat lavender more like a dryland herb than a leafy vegetable. Avoid wet feet, avoid heavy feeding, and trim lightly after flowering. With the right care, lavender can become a long-lasting, fragrant feature in pots, borders, herb gardens, and pollinator plantings.

---

---

Delivery Guarantee

We take great care to make sure your seeds arrive safely. If your order is lost or damaged in transit, we’ll happily send a replacement. Unfortunately, we can’t replace or refund orders that arrive later than the estimated delivery date, as delays can sometimes occur that are outside our control.

Please note that all dispatch and delivery times listed are estimates only. While we do our best to post promptly, delivery timeframes can vary due to postal service delays, weather events, or other unforeseen circumstances. We’re unable to take responsibility for any loss, damage, or cost that results from a late delivery.

An order is not considered missing until at least 20 business days have passed from the postage date. You’ll receive an email once your seeds have been posted, letting you know they’re on their way. If you don’t see it in your main inbox, please check your Spam or Promotions folders as sometimes our emails like to hide there.