A garden buzzing with butterflies is a delight, and creating one is more straightforward than you might think. Butterflies need just two things from a garden: nectar-rich flowers for adult feeding and appropriate host plants for their caterpillars. By providing both, along with a few simple habitat features, you can transform any outdoor space into a haven for these beautiful insects.
The Best Nectar Plants for Butterflies
Butterflies prefer flowers that are flat-topped or tubular, providing an easy landing platform and accessible nectar. The following plants are proven performers in UK gardens:
| Season | Plant | Butterflies Attracted |
|---|---|---|
| Spring (March–May) | Aubretia, honesty, primrose, bluebell | Brimstone, comma, small tortoiseshell |
| Early summer (June–July) | Lavender, marjoram, red valerian, scabious | Meadow brown, large white, common blue |
| Mid-summer (July–August) | Buddleia, verbena bonariensis, echinops, hebe | Peacock, red admiral, painted lady, comma |
| Late summer (August–September) | Sedum (ice plant), Michaelmas daisy, ivy flowers | Red admiral, comma, small tortoiseshell |
| Autumn (September–November) | Ivy, late-flowering asters, single dahlias | Red admiral, comma (feeding before hibernation) |
Top 10 Nectar Plants for UK Butterflies
- Buddleia (Buddleja davidii) — the classic "butterfly bush"; flowers July–September
- Lavender (Lavandula angustifolia) — long flowering period; excellent for bees too
- Marjoram (Origanum vulgare) — native herb; superb for gatekeepers and meadow browns
- Verbena bonariensis — tall purple flowers; irresistible to painted ladies
- Sedum spectabile (ice plant) — essential late-season nectar source
- Red valerian (Centranthus ruber) — long flowering period; attracts many species
- Field scabious (Knautia arvensis) — native wildflower; excellent for common blues
- Hemp agrimony (Eupatorium cannabinum) — native; attracts peacocks and red admirals
- Hebe — many species flower in late summer and autumn
- Single-flowered dahlias — open centres provide easy nectar access
Provide Caterpillar Food Plants
Nectar plants feed the adults, but to breed successfully, butterflies also need specific host plants for their caterpillars. Without these, butterflies may visit your garden but will not establish breeding populations.
- Common nettle: Essential for peacock, small tortoiseshell, red admiral, comma, and painted lady
- Grasses (native species): Food for speckled wood, meadow brown, ringlet, marbled white, and gatekeeper
- Garlic mustard and lady's smock: Host plants for the orange-tip butterfly
- Bird's-foot trefoil: Food plant for the common blue and dingy skipper
- Buckthorn: The sole food plant of the brimstone butterfly
- Holly and ivy: Alternating host plants for the holly blue butterfly
Did you know? Buddleia is so effective at attracting butterflies that it is known as the "butterfly bush." A single buddleia in full bloom on a sunny August afternoon can attract dozens of peacocks, red admirals, commas, and small tortoiseshells simultaneously. However, it is considered invasive in some areas, so deadhead regularly to prevent self-seeding.
Garden Design for Butterflies
- Create a sunny border: Butterflies are cold-blooded and need warmth. Plant nectar flowers in the sunniest, most sheltered part of your garden, ideally against a south-facing wall or fence.
- Plant in drifts: Large blocks of the same flower are more visible and attractive to butterflies than scattered individual plants. Aim for groups of at least three to five of each species.
- Ensure continuous flowering: Plan your planting so that something is in bloom from March through to November. Gaps in nectar availability can force butterflies to leave your garden.
- Add a wildflower area: Even a small patch of native wildflowers sown in a sunny spot will attract species that bypass conventional garden borders.
- Leave some areas wild: A patch of long grass, a pile of dead wood, and an undisturbed corner of nettles provide essential caterpillar habitat and overwintering sites.
- Provide basking spots: Flat stones or bare soil in sunny positions allow butterflies to bask and warm up, particularly on cool mornings.
- Add a shallow water source: A damp patch of mud or sand provides minerals that butterflies need, especially males. This behaviour is called "puddling."
- Avoid double flowers: Heavily bred double flowers often produce little or no nectar. Always choose single-flowered varieties.
Common Mistakes to Avoid
- Using pesticides: Even organic insecticides can kill butterfly caterpillars and other beneficial insects. Avoid spraying wherever possible.
- Over-tidying: Leaving some leaf litter, dead stems, and rough grass provides overwintering habitat for butterflies and their chrysalises.
- Planting only buddleia: While excellent, buddleia flowers for only a few weeks. A diverse planting scheme provides nectar throughout the season.
- Forgetting caterpillars: A garden with no host plants is a service station, not a home. Include food plants to support the full life cycle.
Key Takeaway
Attracting butterflies to your garden requires both nectar-rich flowers for adults and specific host plants for caterpillars. Plant in sunny, sheltered positions, provide continuous bloom from spring to autumn, and embrace a slightly wild approach to garden management. By combining good nectar plants like buddleia, lavender, and sedum with caterpillar food plants like nettles and native grasses, even a small garden can become a thriving butterfly habitat.