With their tall, architectural flower spikes in a dazzling range of colours – from deep purples and blues to pinks, yellows, and white – lupins offer drama, structure, and a generous nectar source for pollinators.
Lupins (genus Lupinus) are part of the legume family (Fabaceae), and they’re well-loved for their tall spires of pea-like flowers and attractive palmate leaves. Native to North and South America, as well as parts of the Mediterranean, they’ve become a staple of traditional British cottage gardens.
Lupins are pollinator magnets, especially for bumblebees. Their tall spikes provide easy access for nectar-loving insects. Choose single-flowered varieties (not double or overly ruffled) for better pollinator appeal.
There are two main types of lupins grown in UK gardens:
- Russell hybrids – The most common garden lupins, bred for showy flower spikes and a wide colour range.
- Tree lupins (Lupinus arboreus) – More shrubby and often evergreen, these are less common but highly attractive.
Lupins love sunshine. Choose a sunny, sheltered spot in your garden where they’ll get at least 6 hours of direct sunlight a day. Though they can tolerate partial shade, flower production may be reduced. One great thing about lupins: as legumes, they fix nitrogen in the soil, making them a great companion for other plants.
Well-drained soil is crucial- lupins hate sitting in wet conditions. And they prefer slightly acidic to neutral soils. Avoid very rich or heavy clay soils and if necessary, improve drainage with grit or organic matter.
When and how to plant them
🌱 From seed
- Sow indoors from February to April, or direct sow in May or September.
- Nick the seed coat or soak seeds overnight to encourage germination.
- Germination typically takes 14–21 days.
🌿From plant
- You can also buy established plants in pots from garden centres in spring.
- Plant them out after the last frost, spacing them around 30–45 cm apart.
Caring for your lupins
- Water young plants regularly.
- Once established, lupins are relatively drought-tolerant but appreciate watering in dry spells.
- Remove spent flower spikes to encourage a second flush of blooms in late summer.
- Taller varieties can benefit from staking, especially in windy areas.
- Most lupins are hardy in the UK (down to around -15°C).
- In colder regions, mulch in late autumn to protect the crown.
Common pests and problems
Lupins can be prone to a few issues:
- Aphids, particularly the large lupin aphid (Macrosiphum albifrons – keep an eye out and wash them off or use organic sprays.
- Slugs and snails love young lupin shoot – use copper tape, beer traps, or pellets sparingly.
- Powdery milde – reduce risk with good air circulation and avoid overhead watering.
Hildreth’s top tips for success!
- Don’t overcrowd – lupins like good airflow to reduce fungal issues.
- Avoid frequent transplanting – they have deep taproots and don’t like being disturbed.
- Don’t feed too much – high nitrogen can lead to floppy growth and fewer flowers.
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