Viper's Bugloss is a striking native plant with spiral flower spikes full of blooms that change from pink to deep blue. This robust species is exceptionally rich in nectar and is especially visited by bumblebees and bees such as the garden bumblebee. Butterflies also visit the flowers but play a smaller role in pollination. Viper's Bugloss is a true insect magnet and a showstopper in wildflower meadows and dry garden areas.
For what purposes can I use Viper's Bugloss?
Viper's Bugloss prefers sunny, dry spots with open soil. Think of flower-rich field margins, dykes, verges, sandy borders or lean garden soil. Thanks to its sturdy flower stems and deep root, the plant tolerates drought well. It fits perfectly in natural planting that requires little maintenance, provided there is enough space. Young seedlings tolerate little competition and need open spots to establish well.
What are the characteristics of Viper's Bugloss?
Native species, naturally occurring in the Netherlands
Growth height: 30–90 cm
Spiral flower spikes with pink to deep blue flowers
Very rich in nectar: favourite of garden bumblebees, shrill carder bees and other wild bees
Long blooming period: June through September
Biennial plant: first year rosette, flowering in the second year
Suitable for dry, calcareous, nutrient-poor soil in full sun
Drought tolerant
Prefers open, sparsely vegetated spots
How do I sow Viper's Bugloss?
Sow about 1 gram per m² (± 280 seeds). Choose a sunny, dry spot on lean soil. Cover seeds with approximately 0.5 cm loose soil to prevent drying out and promote even germination.
Autumn (August to October) is the best sowing time. Seeds then naturally receive a cold period, which ensures swift and even germination in spring. Spring sowing (March to May) is also possible. In both cases, Viper's Bugloss forms a leaf rosette in the first year, with flowering in the second year.
How do I maintain Viper's Bugloss?
Fertilisation is not necessary: on nutrient-poor soil the vegetation stays open enough for new plants to find space. Mow preferably once a year, from the end of July, once the majority of plants have finished flowering and set seed. Note: flowering can continue into September and seed ripening is spread out, so delay mowing if possible. A second cut in autumn (September–October) is only necessary with rapid overgrowth or dominance of grasses. Always remove mowings to further impoverish the soil.
