Field Scabious 9cm Pot Plants Knautia arvensis Common names include gypsy rose and blue button. A perennial native wildflower species which produces an abundance of blue to blue-violet pin cushion flowers from June through to September. Field scabious will grow in most well-drained soil types although prefers slightly alkaline soils. Plant in a sunny spot in a wildflower meadow or garden border. This meadow wildflower species is ideal for a wildlife garden, providing food for pollinators and seed-eating birds like finches. Sourced from native seed and grown in the UK, our 9cm pot plants are a quick and effective way to boost species in a wildflower meadow. We recommend planting around 3 plants per metre square in groups of at least 3 per species for a naturalistic look.