Planting lemon verbena: a complete guide

Planting lemon verbena is successful as long as you choose light and well-drained soil, a sunny location and wait until the end of the frosts before planting.

• Ideal exposure: full sun or light partial shade
• Light, humus-rich, well-drained soil with a neutral pH
• Planting after the last frosts, in spring
• Suitable for growing in pots (minimum diameter 30 cm) or directly in the ground
• Water regularly but not excessively to avoid root rot

What is lemon verbena?

Lemon verbena, scientifically known as Aloysia citrodora, is an aromatic plant native to South America. It is prized for its strong lemon scent and bright green, lance-shaped leaves. It is easily distinguished from common lemongrass by its woody stems and small white or mauve flowers clustered in spikes.

This plant belongs to the Verbenaceae. It can reach between one and two meters in height when planted in the ground in a mild climate. In a pot, its growth remains more controlled, making it perfectly suited to balconies and terraces.

Its leaves are used in infusions, cooking, and even in artisanal perfumery. Planting lemon verbena at home provides a generous and easy-to-maintain source of aroma, provided a few simple rules are followed. If you're hesitating between this plant and other similar species, discover the differences between lemon verbena and lemongrass to make the right choice for your needs.

Choosing the right location to plant lemon verbena

Location is the most important decision when planting lemon verbena. This plant originates from warm, sunny regions and needs at least six hours of direct sunlight per day to thrive and produce abundant fragrant leaves.

A partially shaded location may be suitable in very hot regions where the afternoon sun is particularly intense. In this case, ensure the plant receives at least four hours of the gentler morning sun. Conversely, a location in complete shade will significantly reduce leaf production and weaken the plant.

Also consider protecting it from the wind. Lemon verbena doesn't tolerate cold drafts and strong winds well, which can dry out its leaves and weaken its stems. A south- or west-facing wall provides ideal natural shelter. If you grow it in a pot, you have the advantage of being able to move the plant according to the seasons.

What type of soil should I choose for planting lemon verbena?

Soil is a crucial factor for successfully planting lemon verbena. This plant requires a light, humus-rich, and above all, very well-drained substrate. Heavy, clay soil that retains water quickly leads to root rot, which is the main cause of failure.

In open ground, if your soil is naturally heavy, amend it before planting. Incorporate coarse sand, perlite, or fine gravel to improve drainage. Also add well-rotted compost to enrich the substrate and promote root development. The ideal pH is around neutral, between 6.5 and 7.5.

When planting in pots, use a mixture of good-quality universal potting soil and sand or perlite in a ratio of approximately two-thirds potting soil to one-third drainage material. Ensure the pot has sufficient drainage holes and place a layer of clay pebbles or gravel at the bottom of the container before adding the potting mix.

Planting lemon verbena in a pot: practical steps

Planting lemon verbena in a pot is an excellent option for gardeners with a balcony or terrace, or who live in regions with cold winters. The pot offers the flexibility of bringing the plant indoors as soon as temperatures drop.

Choose a container with a minimum diameter of 30 cm and a similar depth. A pot that is too small will restrict root development and require very frequent watering. Terracotta is a good choice because it is porous and promotes gas exchange, but it dries out more quickly: adjust your watering frequency accordingly.

• Place a layer of clay pebbles at the bottom of the pot (approximately 3 cm)
• Fill halfway with the potting soil and sand mixture
• Gently place the plant's root ball, centering it well
• Fill in around the root ball with substrate without packing it down excessively
• Water thoroughly to encourage root development
• Place the pot in a sunny spot sheltered from the wind

For complete seasonal guidance, consult our guide on caring for potted lemon verbena, which details watering, fertilizing, and annual repotting.

Planting lemon verbena in open ground: instructions

Planting directly in the ground is suitable for regions with mild winters (above approximately -5°C) or for gardens with a south-facing wall that provides protection from frost. In the ground, the plant can reach its full size and develop a robust root system.

Begin by preparing the soil several days before planting. Dig to a depth of 30 to 40 cm, remove stones and weeds, and incorporate compost and sand if necessary. Dig a hole slightly wider than the plant's root ball.

• Soak the root ball in a bucket of water for 15 minutes before planting
• Place the root ball in the hole, making sure that the crown is at ground level
• Backfill with the amended soil, tamping lightly
• Create a watering basin around the base of the plant to retain water
• Water generously and keep the soil moist for the first two weeks
• Mulch around the base of the plant with bark or straw to limit evaporation

If you are growing several plants, maintain a spacing of at least 60 to 80 cm between each plant to allow for good aeration and prevent the spread of fungal diseases.

When to plant lemon verbena?

The planting period is crucial for successfully planting lemon verbena. This plant is very sensitive to frost: even a light frost can irreparably damage the young shoots. Therefore, you must wait until all risk of frost has completely passed before planting it in the ground.

In most regions of France, this planting window opens between mid-April and the end of May, depending on altitude and geographical location. In the South of France and along the Atlantic coast, planting is possible as early as the beginning of April. In mountainous or continental areas, it's best to wait until the end of May or the beginning of June.

If you buy a plant from a garden center before this date, keep it indoors in a bright, slightly heated place. You can also gradually acclimate it by taking it outside for a few hours each day when temperatures are mild, before planting it out permanently.

Watering after planting lemon verbena

After planting lemon verbena, watering is one of the trickiest things to master. This plant appreciates consistent moisture but doesn't tolerate overwatering. Constantly soggy soil encourages root diseases and can kill the plant in a matter of weeks.

For the first two weeks after planting, water regularly to encourage root development. After that, allow the soil to dry out slightly between waterings. In summer, during periods of intense heat, watering every two to three days is often necessary, especially for potted plants which dry out more quickly.

In open ground, a thick layer of mulch around the base of the plant significantly reduces water needs and retains soil moisture. Always water at the base of the plant, never on the leaves, to minimize the risk of fungal diseases. Watering in the evening is preferable in summer to limit evaporation.

Fertilize lemon verbena after planting

Proper fertilization encourages growth and the production of fragrant leaves. After planting lemon verbena, wait approximately three to four weeks before applying the first fertilizer, allowing time for the plant to establish itself and develop its first roots in the new substrate.

Ideally, use an organic fertilizer made from compost or well-rotted manure. You can also opt for a liquid fertilizer for herbs, rich in nitrogen to stimulate leaf growth. Apply this fertilizer every two to three weeks during the active growing season, from May to August.

In autumn, gradually reduce fertilizer application to prepare the plant for dormancy. Over-fertilizing at the end of the season will produce tender, fragile shoots that are particularly vulnerable to cold. Fertilizing is even more important when grown in pots, as the potting mix is ​​quickly leached by frequent watering.

Summary table: Planting lemon verbena at a glance

Propagate lemon verbena after planting

Once you have successfully planted lemon verbena and it is well established, you can consider propagating it to fill other areas of your garden or to give plants to friends and family. The simplest and most reliable method is by taking cuttings.

Cuttings are best taken in late spring or early summer, when the plant is actively growing. Take semi-woody stems 10 to 15 cm long, remove the lower leaves, and dip the base in rooting hormone powder. Then plant in a mixture of sand and potting soil, keep it slightly moist, and place in a bright location out of direct sunlight.

Dividing the clump is another possible option in spring, when repotting, or when the plant in the ground becomes too large. To master all the propagation techniques, our guide on lemon verbena cuttings will walk you through each step.

Preventing problems after planting lemon verbena

Even with the best growing conditions, lemon verbena can encounter some difficulties. Knowing the most common problems allows you to intervene quickly before they worsen.

Yellowing leaves are often a sign of overwatering, insufficient light, or a nutrient deficiency. Widespread yellowing after planting can also indicate transplant shock: keep the soil slightly moist and place the plant in a sheltered spot until it recovers. Consult our article dedicated to yellowing leaves on lemon verbena to identify the precise cause and remedy it.

Aphids and whiteflies can infest young shoots. A strong jet of water is often enough to eliminate them. In case of a persistent infestation, a diluted natural insecticidal soap can be applied to the affected areas. Avoid harsh chemical treatments that would destroy the beneficial insects in your garden.

Overwintering: Protect lemon verbena after planting

Lemon verbena is sensitive to frost and requires winter protection in most regions of France. Preparing it for winter in the autumn is essential to ensure a vigorous plant the following spring.

For potted plants, the simplest solution is to bring the container indoors to a frost-free, bright, and unheated location as soon as nighttime temperatures regularly drop below 5°C (41°F). A conservatory, a garage with a window, or a cold frame is ideal. Reduce watering to the bare minimum during this dormant period.

In areas with mild winters, a thick layer of mulch, 10 to 15 cm deep, around the base of the plant may be sufficient to protect it. You can also cut the stems back to about 30 cm from the ground and cover the base with horticultural fleece. Our article on lemon verbena in winter will guide you in choosing the best strategy for your region.

Uses of lemon verbena once planted

Planting lemon verbena also means anticipating the many uses you can make of it once the plant is well established. Its fragrant leaves can be harvested as soon as the plant is well established, generally a few weeks after planting.

Harvesting is done by cutting the stems with clean shears, preferably in the morning when the essential oils are most concentrated. You can use the fresh leaves directly or dry them in the shade in a well-ventilated place to preserve them for several months.

• Relaxing evening infusion: a few fresh or dried leaves in hot water
• Flavoring of sweet dishes: creams, sorbets, fruit salads
• Natural fragrance for linens and wardrobes
• Handmade cosmetic preparations (floral waters, balms)
• Natural repellent against certain insects in the garden

Lemon verbena is also known for its mosquito-repellent properties. Discover how to use lemon verbena as a natural mosquito repellent to fully enjoy your garden this summer. Before any intensive use, especially by sensitive individuals, be sure to check the contraindications of lemon verbena for safe use.

Lemon verbena and pets

If you have pets, remember to check the compatibility of your herbs with their habits. Some garden plants may be poorly tolerated by cats or dogs, and lemon verbena is no exception.

Keep your plants out of reach of curious animals, especially young cats that might chew the leaves. Our article on lemon verbena toxicity for cats summarizes what the available literature says and outlines the precautions to take.

As a general rule, a location in a high place or behind a light barrier is sufficient to protect the plant from animals while keeping it accessible for your daily harvest.

Frequently asked questions about planting lemon verbena

When to plant lemon verbena in open ground?

The best time to plant lemon verbena outdoors is after the last spring frosts. Depending on the region, this generally corresponds to mid-April in the South of France and along the coast, and to late May or early June in colder areas or at higher altitudes. Always wait until nighttime temperatures have stabilized above 5°C (41°F) before planting.

Can lemon verbena be planted in a pot all year round?

Planting in pots is possible as soon as temperatures are mild, that is, from spring to autumn. In winter, if you have a bright, frost-free indoor space, you can keep the plant alive by reducing watering. Planting out in the spring is still recommended to encourage good root development before summer.

What is the best soil for planting lemon verbena?

Lemon verbena prefers light, humus-rich, well-drained soil with a near-neutral pH. Heavy, clay soils should be amended with coarse sand and compost before planting. In pots, a mixture of two-thirds universal potting soil and one-third sand or perlite provides an ideal substrate for this aromatic plant.

How much sun is needed to successfully plant lemon verbena?

Lemon verbena needs at least six hours of direct sunlight per day to thrive and produce abundant, fragrant leaves. A partially shaded location may be suitable in very hot climates, provided the plant receives at least four hours of morning sun. A fully shaded location should be avoided entirely.

Do you need to water often after planting lemon verbena?

For the first two weeks after planting, water regularly to encourage establishment. After that, allow the soil to dry out slightly between waterings. Lemon verbena tolerates a slight lack of water better than excess. In summer, watering every two to three days is often sufficient for plants in the ground, and more frequently for potted plants.

Can lemon verbena be planted with other aromatic plants?

Yes, lemon verbena pairs well with other Mediterranean herbs that share its needs for sun and well-drained soil: lavender, thyme, rosemary, or sage. Be sure to leave enough space between plants to ensure good air circulation and avoid root competition. Avoid planting it near plants that prefer moist soil, such as mint.

How can I tell if the lemon verbena has taken root properly after planting?

Signs of successful establishment are visible two to three weeks after planting lemon verbena: new green shoots appear at the tips of the stems, the leaves remain firm and bright green, and the plant shows no signs of persistent wilting. Slight wilting on the first day is normal and should not be a cause for concern.

Should lemon verbena be pruned after planting?

Light pruning is not necessary immediately after planting. Wait until the plant is well established, usually after four to six weeks. You can then pinch the tips of the stems to encourage branching and a bushier plant. The main pruning should be done the following spring, before new growth begins.

Can lemon verbena planted in a pot stay outside during the winter?

In most regions of France, leaving potted lemon verbena outdoors during the winter is risky. This plant cannot tolerate prolonged periods of freezing temperatures. As soon as the nights become consistently cool, bring the pot indoors to a frost-free, bright location. In Mediterranean regions with very mild winters, shelter against a south-facing wall may suffice.

What size pot should I choose to plant lemon verbena?

Choose a pot with a minimum diameter of 30 cm and a similar depth for planting lemon verbena. A container that is too small will restrict root development and require very frequent watering. If you want a larger plant, opt for a pot 40 to 50 cm in diameter. Always ensure that the pot has sufficient drainage holes.

Can lemon verbena be grown from seed?

Propagation by seed is possible but rarely practiced because germination is slow and the success rate is variable. The vast majority of gardeners prefer to buy a plant from a garden center or propagate by cuttings from an existing plant. If you wish to try sowing seeds, do so indoors in a sheltered location several weeks before planting outdoors.

Does planted lemon verbena attract bees?

Yes, flowering lemon verbena is attractive to bees and other pollinating insects. Its small white or mauve flowers, produced in summer, are a valuable source of nectar. Planting lemon verbena in your garden therefore helps support local biodiversity. This is yet another reason to love this generous and easy-to-grow aromatic plant.

Key takeaways

Planting lemon verbena is within reach of all gardeners, beginners and experienced alike, provided three fundamental rules are followed: well-drained soil, a sunny location, and planting after the last frost. Whether in a pot or in the ground, this aromatic plant with its lemony scent quickly rewards your efforts with vigorous growth and abundant leaves that can be used all season long.

Whether you want to enjoy its leaves in an infusion, add fragrance to your cooking, or simply beautify your balcony, planting lemon verbena is a simple and lasting investment. Start as early as next spring: choose a suitable pot or prepare your soil, and give this plant the conditions it deserves to thrive.