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Alcea rosea 'Jet Black' is the classic dark crimson-black hollyhock that all of us long for – elegant, stately flower spires throughout the summer.
You can grow Alcea rosea 'Jet Black' as a biennial to cut down the risk of rust, or grow as a perennial in an open sunny spot with good ventilation.
|Sowing:||Sow Mar-July in modules, two seeds to each cell.||Site:||Full sun, fairly poor but well drained soil.||Height:||1m (3ft)||Spacing:||Plant 45cm apart.||Hardiness:||Hardy||Care tips:||For larger, finer plants grow as biennials sowing under glass in the summer and planting out that autumn||Flowers:||❀Late spring - autumn||For the vase:||Sear their stems for 20 secs before giving them a deep cool drink. Use their full height with either several colours jumbled together or a single colour in a stately vase.|