Hoo House Nursery

Retail nursery specialising in Perennials and Alpines all grown peat-free.

Hoo House Nursery in the RHS Magazine
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Sempervivum 'Black Knight'

Dark purplish black rosettes up to 8cm (3in) and growing 10cm (4in) wide. Prefers well drained, gritty soil in sun.

Sempervivum traditionally grown on roofs to guard against lightning, storms and sorcery, and ensure your prosperity. Plant in a clay anchor to start them if you need this insurance, but rock gardens or containers will do just as well.

  • Price

    £ 3.00

  • Larger pot size

    £ 4.00

  • Height

    8 cm

  • Spread

    10 cm

  • Category


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