The Best Planting Companions for Lavender
When considering what plants go well with lavender, the primary goal is to create a harmonious display that complements its distinctive colour, fragrance, and form. Successful companion planting for lavender involves choosing species that share its preference for well-drained soil, ample sunlight, and a relatively dry environment once established. These conditions are crucial, as lavender dislikes waterlogged roots and can struggle in overly damp or shaded spots. By selecting plants with similar needs, you ensure that both the lavender and its neighbours flourish, contributing to a robust and aesthetically pleasing garden space.
- Prioritise plants with similar sun and soil needs.
- Select companions that tolerate drought once established.
- Choose plants with contrasting or complementary colours and textures.
- Consider plants that deter pests or attract beneficial insects.
The classic pairing involves plants with grey or silver foliage, as these hues echo the natural tones of lavender leaves and stems, creating a cohesive Mediterranean feel. Rosemary, sage, and thyme are excellent choices, not only visually but also because they share the same low-water requirements and love for sunshine. Their aromatic qualities also blend beautifully with lavender’s scent, enhancing the overall sensory experience of the garden. Beyond herbs, various flowering perennials offer striking visual contrasts and textural interest.
Shrubs and Perennials for a Harmonious Bed
For structure and year-round interest, consider low-growing shrubs and sturdy perennials. Santolina, or cotton lavender, with its silver foliage and small yellow button flowers, is an ideal companion that truly echoes the lavender's aesthetic. Yarrow (Achillea) provides flat flowerheads in shades of yellow, cream, or pink, offering a delightful contrast to lavender's spires and thriving in the same dry conditions. Echinacea, or coneflowers, with their prominent, daisy-like blooms, add height and a splash of vibrant colour, drawing the eye and attracting pollinators.
When planning your planting, think about the mature size of each plant. Grouping plants that will grow to similar heights can create a balanced look, while strategically placing taller companions behind shorter ones adds depth. Ensure adequate spacing to allow for air circulation, which is vital for preventing fungal diseases, especially in humid climates. Lavender itself benefits from being planted with companions that don't compete too aggressively for resources, making drought-tolerant and sun-loving species the most reliable choices.
Ornamental Grasses and Small Shrubs
Are you seeking textural contrast and movement in your lavender displays? Ornamental grasses and compact shrubs are fantastic partners that can elevate your garden design. Their varied forms and colours offer a sophisticated backdrop or foreground to the stately spikes of lavender.
Adding Texture with Grasses
Grasses like Festuca glauca (Blue Fescue) provide striking mounds of blue-grey foliage that perfectly complement lavender’s purple blooms and silvery leaves. Their fine texture offers a delicate counterpoint to lavender’s more robust stems. For a taller, more dramatic effect, consider Stipa tenuissima (Feather Grass). Its fine, wispy blades sway gently in the breeze, creating a soft, ethereal landscape when interspersed with lavender. Both these grasses require excellent drainage and full sun, mirroring lavender’s essential growing conditions.
The interplay of soft grasses and upright lavender spikes creates a dynamic yet serene garden composition.
Other grasses such as Calamagrostis x acutiflora 'Karl Foerster' offer vertical interest with their upright habit and feathery plumes, providing a striking architectural element that stands well behind lavender plants. These larger grasses require good soil but generally perform well in sunny, open positions.
Compact Shrubs for Structure and Colour
Beyond herbs and perennials, certain small, hardy shrubs integrate beautifully with lavender. Low-growing Hebe varieties, especially those with silver or grey-green foliage, can provide a dense, shrubby presence that anchors a planting scheme. Their often understated flowers can add subtle colour without competing with lavender. Calluna vulgaris, or Scotch Heather, especially its varieties with bronze or grey foliage, can offer year-round colour and low, mounding forms that suit the front of a border.
When selecting shrubs, always check their mature size and ultimate spread to ensure they won’t overwhelm the lavender plants. Proper spacing is key for healthy growth and to maintain the visual balance you are aiming for. Most of these shrubby companions, like lavender, appreciate lean, well-drained soil and will reward you with minimal fuss.
Drought-Tolerant Flowers and Groundcovers
What happens if you want a sea of colour that still respects your lavender's thirst for sunshine and dry conditions? Focus on plants that are naturally adapted to arid or Mediterranean climates. These choices not only survive but thrive alongside lavender, ensuring a garden that looks good with minimal watering.
Perennial Blooms for Sunny Spots
Many classic cottage garden flowers are surprisingly well-suited to drier conditions when established, especially when planted in well-draining soil. Coreopsis, with its cheerful yellow, daisy-like flowers, adds a bright splash of colour and blooms prolifically through summer. Gaillardia, or Blanket Flower, offers vibrant, bi-coloured blooms in shades of red, orange, and yellow, and is exceptionally drought-tolerant. Sedum varieties, particularly those with succulent foliage like Sedum 'Autumn Joy', are stellar companions. They store water in their leaves, tolerate dry spells, and their late-season blooms provide colour when many other plants are fading.
Consider also the architectural beauty of ornamental onions, such as Allium schoenoprasilum (chives) or Allium cernuum (nodding onion). Their spherical flowerheads provide a unique visual element and attract pollinators, while their foliage often has a pleasant, mild onion scent that can mingle with lavender. These alliums prefer well-drained soil and full sun, making them natural fits.
Plant lavender in mounds or on slopes to further improve drainage, a simple step that significantly boosts plant health and reduces the risk of root rot, even with well-chosen companions.
Groundcovers to Enhance the Look
Low-growing, spreading plants can create a beautiful carpet around the base of lavender, suppressing weeds and adding layers of texture and colour. Thyme, especially creeping varieties like Thymus serpyllum (Creeping Thyme), is an outstanding choice. Its small, aromatic leaves and profusion of tiny flowers in summer form a dense mat that tolerates foot traffic and drought. As it grows, it releases its fragrance when brushed against, harmonising with the lavender's scent.
Other hardy groundcovers like Sedum acre (Goldmoss Stonecrop) or various low-growing Campanula (Bellflower) species, provided they are the sun-loving, drought-tolerant varieties, can also perform well. Ensure the groundcover doesn’t become too invasive, as you want it to complement, not compete with, your lavender. The goal is a unified planting where every element supports the health and visual appeal of the whole, particularly the star – the lavender.
Caring for Your Lavender Companions
How do you ensure your lavender and its chosen companions thrive together long-term? The secret lies in consistent care that respects their shared preferences, particularly regarding water and soil.
Watering and Soil Management
The most critical factor is drainage. Lavender and most of its ideal partners simply cannot tolerate soggy conditions. If your garden soil is heavy clay, amend it generously with grit, sand, or perlite before planting. Raised beds or containers are also excellent solutions. Once established, lavender and its drought-tolerant companions require infrequent watering. Allow the soil to dry out completely between waterings. Overwatering is a far more common mistake than underwatering for this group of plants. Check the soil moisture by inserting your finger a couple of inches down; if it feels damp, wait longer.
Pruning and Maintenance for Health
Regular pruning is essential for maintaining the shape and vigour of lavender plants and for promoting abundant flowering. Pruning lavender correctly involves cutting back after the main flush of flowers, typically in late summer or early autumn, but this depends on the specific variety and your climate. Aim to remove spent flower stems and cut back the woody growth by about a third, being careful not to cut into old, bare wood. This encourages bushy growth and prevents plants from becoming straggly.
Companion plants will also benefit from occasional tidying. Deadheading spent flowers on perennials like yarrow or coneflowers can encourage repeat blooming. Ornamental grasses can be tidied up in late winter or early spring, just before new growth appears, cutting them back to a few inches from the ground. Herbs like rosemary and sage may also need light pruning to maintain shape and encourage dense growth.
By selecting companions that share lavender’s love for sun and well-drained soil, and by maintaining a consistent care routine, you can create a beautiful, fragrant, and resilient garden display that lasts for years.