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Lobelia siphiliticaUpright, clump-forming perennial with long-lasting, tubular, two-lipped blue flowers. | Flowering period: Late summer to mid autumn. | | Growing conditions: Best in moist but well-drained soil in sun. | | Typical mature height: 30 inches ( 76 cms ) | | Hardiness: Hardy. Should withstand average to cold UK winters. |  | This is an insect-friendly plant which gives bees and other insects easy access to nectar and pollen. | |
 
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