Drought-tolerant plant combinations: a garden that thrives without constant watering

A garden that handles drought

Summers are getting drier. We all notice it. The lawn turns yellow, the hydrangeas droop and you spend every evening dragging the hose around. Frustrating — and frankly, not sustainable. Fortunately, there are stunning plants that actually thrive in heat and drought, and when combined properly, they create a border you can enjoy all summer long.

The secret? The right combination. Drought-tolerant plants are not a dull collection of grey-green leaves. Pair the right species and you get colour, texture and movement. Here are five proven combinations that work brilliantly in Northern European gardens.

Combination 1: Lavender, Stachys and Russian sage

This is the classic silver-grey border. Plant Lavandula angustifolia 'Hidcote' at the front, Stachys byzantina (lamb's ear) as ground cover in front of it, and Perovskia atriplicifolia (Russian sage) at the back. The result: a cloud of blue-purple above silver-grey foliage. The Perovskia flowers from July to September and attracts butterflies. Cut everything back to about 15 centimetres in March and you are set for the rest of the year.

Plant in full sun and well-drained soil. Heavy clay? Mix in plenty of gravel and sand. These plants hate wet feet — that is the only thing you need to watch.

Combination 2: Ornamental grasses with Echinacea and Sedum

Who says a dry garden cannot be colourful? Plant Pennisetum alopecuroides (fountain grass) between Echinacea purpurea 'Magnus' and Sedum 'Herbstfreude'. In late summer this becomes an explosion of pink, purple and copper-red. The grasses catch the light, the Echinacea attracts bees and the Sedum transitions from green to deep red.

This combination is also fantastic in winter. Leave everything standing until February. The seed heads of the Echinacea and the dried plumes of the grass look magical with a coating of frost.

Combination 3: Agapanthus, Gaura and Verbena bonariensis

Want height and airiness? This is your combination. Agapanthus 'Northern Star' (hardy to -15 degrees Celsius) delivers sturdy blue globes on tall stems. Gaura lindheimeri dances between them with pink-white flowers. And Verbena bonariensis floats on metre-high stems above everything. Together they create a transparent, swaying border that feels like a summer meadow.

One note: Agapanthus needs some protection in its first winter. Cover the crown with a thick layer of leaf mulch. After the first year it manages just fine.

Combination 4: Succulents on a gravel bed

For the true drought enthusiast. Create a gravel bed and plant clusters of Sempervivum (houseleek), Sedum acre, Delosperma cooperi and Euphorbia myrsinites. These plants can literally survive weeks without water. The contrasts in form are spectacular: the rosettes of houseleek, the creeping mats of Delosperma with bright pink flowers, the blue-green trailing stems of Euphorbia.

Lay landscape fabric under the gravel and leave openings for the plants. This keeps weeds away and saves you hours of maintenance.

Combination 5: Oleaster, Cistus and Santolina

Think Mediterranean. Elaeagnus angustifolia (oleaster) forms a small tree with shimmering silver-grey leaves. Beneath it, plant Cistus purpureus with its crinkled purple blooms and Santolina chamaecyparissus with compact silver foliage and yellow button flowers. It smells wonderful — the Cistus releases a resinous scent on warm days.

This combination excels against a south-facing wall or as an island in a gravel garden. Prune the Santolina hard in spring for a tight cushion shape.

Care tips for a drought-tolerant border

Getting the start right is half the battle. Plant in autumn if you can — roots establish before the summer heat arrives. Water regularly during the first year to help plants settle. After that, supplemental watering is only needed during extreme heat.

Mulch with gravel or pebbles rather than bark. This retains moisture, reflects warmth (which these plants actually enjoy) and looks crisp. Feeding? Barely needed. Overly rich soil makes these plants leggy and vulnerable.

Design your drought-tolerant garden

Want to see how a drought-tolerant border would look in your garden? Upload a photo at gardenworld.app and discover the possibilities. See exactly how combinations of lavender, grasses and succulents would transform your space — without reaching for the watering can every evening.