Allium Firmament was raised by A. Langedijk from a cross between Allium atropurpureum and Allium cristophii. The flowers are deep purple with a metallic sheen, about 4-5" (10-12.5 cm)across, characteristically quite flat at the base. The foliage is disappearing at flowering time in June. A very good late flowering form with a deep colour which is useful to provide extension to the season.
Plant Allium Firmament bulbs singly, or in small group 4-5in (10-12.5cm) deep in sunny flower beds in well drained soil in the sun. Plant so the drying foliage is camouflaged in the summer.