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Sign up freePotentially invasive
This species can spread aggressively. Check local guidance before planting, and avoid letting it escape into the wild.
Lupinus polyphyllus
Fixes nitrogen. Nick or soak seeds before sowing. Cut spent spikes for second flush. Short-lived perennial; replace every 3–4 years.
Castanea sativa
Thrives in the same full sun, moderate water conditions as Lupin
Start Lupin indoors about 6 weeks before your last frost, keeping seeds in cooler soil (around 10–18 °C). Seeds usually come up in around 14 days. Move seedlings out once the danger of frost has passed, in full sun, spaced about 45 cm apart. Expect the first blooms in roughly 90 days.
Keep track of the seeds you own.
Water: Medium · Height: 120 cm · Soil: Well-draining, slightly acidic — dislikes lime
These three thrive alongside Lupin — and alongside each other.