Its brown stem is thought to resemble a snake skin and the seeds like a viper's head therefore it was prescibed as an antidote to Viper's bites! Beautiful tall pink/blue flowers appear on 4ft spikes in second year, loved by insects. One of our favourite herbs.
Type: Hardy Biennial
Soil type: Will tolerate most soil types
Aspect: Sun/light shade
Flower colour: Blue/pink
Flowering time: Summer